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An K, Liu Z, Zhang T, Li S, Zhou Y, Yuan X, Wang L, Zhang W, Wang G, Lu H. Efficient characterizations of multiphoton states with an ultra-thin optical device. Nat Commun 2024; 15:3944. [PMID: 38729947 PMCID: PMC11087518 DOI: 10.1038/s41467-024-48213-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
Metasurface enables the generation and manipulation of multiphoton entanglement with flat optics, providing a more efficient platform for large-scale photonic quantum information processing. Here, we show that a single metasurface optical device would allow more efficient characterizations of multiphoton entangled states, such as shadow tomography, which generally requires fast and complicated control of optical setups to perform information-complete measurements, a demanding task using conventional optics. The compact and stable device here allows implementations of general positive operator valued measures with a reduced sample complexity and significantly alleviates the experimental complexity to implement shadow tomography. Integrating self-learning and calibration algorithms, we observe notable advantages in the reconstruction of multiphoton entanglement, including using fewer measurements, having higher accuracy, and being robust against experimental imperfections. Our work unveils the feasibility of metasurface as a favorable integrated optical device for efficient characterization of multiphoton entanglement, and sheds light on scalable photonic quantum technologies with ultra-thin optical devices.
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Affiliation(s)
- Kui An
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China
| | - Zilei Liu
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ting Zhang
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China
| | - Siqi Li
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China
| | - You Zhou
- Key Laboratory for Information Science of Electromagnetic Waves (Ministry of Education), Fudan University, Shanghai, 200433, China
- Hefei National Laboratory, Hefei, 230088, China
| | - Xiao Yuan
- Center on Frontiers of Computing Studies, Peking University, Beijing, 100871, China
| | - Leiran Wang
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenfu Zhang
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guoxi Wang
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - He Lu
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
- Shenzhen Research Institute of Shandong University, Shenzhen, 518057, China.
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2
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Chia Y, Liao W, Vyas S, Chu CH, Yamaguchi T, Liu X, Tanaka T, Huang Y, Chen MK, Chen W, Tsai DP, Luo Y. In Vivo Intelligent Fluorescence Endo-Microscopy by Varifocal Meta-Device and Deep Learning. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307837. [PMID: 38488694 PMCID: PMC11132035 DOI: 10.1002/advs.202307837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/30/2023] [Indexed: 05/29/2024]
Abstract
Endo-microscopy is crucial for real-time 3D visualization of internal tissues and subcellular structures. Conventional methods rely on axial movement of optical components for precise focus adjustment, limiting miniaturization and complicating procedures. Meta-device, composed of artificial nanostructures, is an emerging optical flat device that can freely manipulate the phase and amplitude of light. Here, an intelligent fluorescence endo-microscope is developed based on varifocal meta-lens and deep learning (DL). The breakthrough enables in vivo 3D imaging of mouse brains, where varifocal meta-lens focal length adjusts through relative rotation angle. The system offers key advantages such as invariant magnification, a large field-of-view, and optical sectioning at a maximum focal length tuning range of ≈2 mm with 3 µm lateral resolution. Using a DL network, image acquisition time and system complexity are significantly reduced, and in vivo high-resolution brain images of detailed vessels and surrounding perivascular space are clearly observed within 0.1 s (≈50 times faster). The approach will benefit various surgical procedures, such as gastrointestinal biopsies, neural imaging, brain surgery, etc.
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Grants
- NSTC 112-2221-E-002-055-MY3 National Science and Technology Council, Taiwan
- NSTC 112-2221-E-002-212-MY3 National Science and Technology Council, Taiwan
- MOST-108-2221-E-002-168-MY4 National Science and Technology Council, Taiwan
- NTU-CC-113L891102 National Taiwan University
- NTU-113L8507 National Taiwan University
- NTU-CC-112L892902 National Taiwan University
- NTU-107L7728 National Taiwan University
- NTU-107L7807 National Taiwan University
- NTU-YIH-08HZT49001 National Taiwan University
- AoE/P-502/20 University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- C1015-21E University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- C5031-22G University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- CityU15303521 University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- CityU11310522 University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- CityU11305223 University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- CityU11300123 University Grants Committee / Research Grants Council of the Hong Kong Special Administrative Region, China
- 2020B1515120073 Department of Science and Technology of Guangdong Province
- 9380131 City University of Hong Kong
- 9610628 City University of Hong Kong
- 7005867 City University of Hong Kong
- JPMJCR1904 JST CREST
- NHRI-EX113-11327EI National Health Research Institutes
- National Science and Technology Council, Taiwan
- National Taiwan University
- Department of Science and Technology of Guangdong Province
- City University of Hong Kong
- National Health Research Institutes
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Affiliation(s)
- Yu‐Hsin Chia
- Department of Biomedical EngineeringNational Taiwan UniversityTaipei10051Taiwan
- Institute of Medical Device and ImagingNational Taiwan UniversityTaipei10051Taiwan
| | - Wei‐Hao Liao
- Department of Physical Medicine and RehabilitationNational Taiwan University Hospital & National Taiwan University College of MedicineTaipei10051Taiwan
| | - Sunil Vyas
- Institute of Medical Device and ImagingNational Taiwan UniversityTaipei10051Taiwan
| | - Cheng Hung Chu
- YongLin Institute of HealthNational Taiwan UniversityTaipei10087Taiwan
| | - Takeshi Yamaguchi
- Innovative Photon Manipulation Research TeamRIKEN Center for Advanced PhotonicsSaitama351‐0198Japan
| | - Xiaoyuan Liu
- Department of Electrical EngineeringCity University of Hong KongKowloon999077Hong Kong, China
| | - Takuo Tanaka
- Innovative Photon Manipulation Research TeamRIKEN Center for Advanced PhotonicsSaitama351‐0198Japan
| | - Yi‐You Huang
- Department of Biomedical EngineeringNational Taiwan UniversityTaipei10051Taiwan
- Institute of Medical Device and ImagingNational Taiwan UniversityTaipei10051Taiwan
- Department of Biomedical EngineeringNational Taiwan University HospitalTaipei10051Taiwan
| | - Mu Ku Chen
- Department of Electrical EngineeringCity University of Hong KongKowloon999077Hong Kong, China
- Centre for Biosystems, Neuroscience and NanotechnologyCity University of Hong KongKowloon999077Hong Kong, China
- The State Key Laboratory of Terahertz and Millimeter WavesCity University of Hong KongKowloon999077Hong Kong, China
| | - Wen‐Shiang Chen
- Department of Physical Medicine and RehabilitationNational Taiwan University Hospital & National Taiwan University College of MedicineTaipei10051Taiwan
- Institute of Biomedical Engineering and NanomedicineNational Health Research InstitutesMiaoli35053Taiwan
| | - Din Ping Tsai
- Department of Electrical EngineeringCity University of Hong KongKowloon999077Hong Kong, China
- Centre for Biosystems, Neuroscience and NanotechnologyCity University of Hong KongKowloon999077Hong Kong, China
- The State Key Laboratory of Terahertz and Millimeter WavesCity University of Hong KongKowloon999077Hong Kong, China
| | - Yuan Luo
- Institute of Medical Device and ImagingNational Taiwan UniversityTaipei10051Taiwan
- YongLin Institute of HealthNational Taiwan UniversityTaipei10087Taiwan
- Molecular Imaging CenterNational Taiwan UniversityTaipei10672Taiwan
- Program for Precision Health and Intelligent MedicineNational Taiwan UniversityTaipei106319Taiwan
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3
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Xin YH, Hu KM, Yin HZ, Deng XL, Dong ZQ, Yan SZ, Jiang XS, Meng G, Zhang WM. Dynamic Optical Encryption Fueled via Tunable Mechanical Composite Micrograting Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312650. [PMID: 38339884 DOI: 10.1002/adma.202312650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/18/2024] [Indexed: 02/12/2024]
Abstract
Optical grating devices based on micro/nanostructured functional surfaces are widely employed to precisely manipulate light propagation, which is significant for information technologies, optical data storage, and light sensors. However, the parameters of rigid periodic structures are difficult to tune after manufacturing, which seriously limits their capacity for in situ light manipulation. Here, a novel anti-eavesdropping, anti-damage, and anti-tamper dynamic optical encryption strategy are reported via tunable mechanical composite wrinkle micrograting encryption systems (MCWGES). By mechanically composing multiple in-situ tunable ordered wrinkle gratings, the dynamic keys with large space capacity are generated to obtain encrypted diffraction patterns, which can provide a higher level of security for the encrypted systems. Furthermore, a multiple grating cone diffraction model is proposed to reveal the dynamic optical encryption principle of MCWGES. Optical encryption communication using dynamic keys has the effect of preventing eavesdropping, damage, and tampering. This dynamic encryption method based on optical manipulation of wrinkle grating demonstrates the potential applications of micro/nanostructured functional surfaces in the field of information security.
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Affiliation(s)
- Yi-Hang Xin
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Kai-Ming Hu
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hao-Zhe Yin
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xin-Lu Deng
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhi-Qi Dong
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shu-Zhen Yan
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xue-Song Jiang
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guang Meng
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wen-Ming Zhang
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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4
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Yao J, Hsu WL, Liang Y, Lin R, Chen MK, Tsai DP. Nonlocal metasurface for dark-field edge emission. SCIENCE ADVANCES 2024; 10:eadn2752. [PMID: 38630828 PMCID: PMC11023491 DOI: 10.1126/sciadv.adn2752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 03/13/2024] [Indexed: 04/19/2024]
Abstract
Nonlocal effects originating from interactions between neighboring meta-atoms introduce additional degrees of freedom for peculiar characteristics of metadevices, such as enhancement, selectivity, and spatial modulation. However, they are generally difficult to manipulate because of the collective responses of multiple meta-atoms. Here, we experimentally demonstrate the nonlocal metasurface to realize the spatial modulation of dark-field emission. Plasmonic asymmetric split rings (ASRs) are designed to simultaneously excite local dipole resonance and nonlocal quasi-bound states in the continuum and spatially extended modes. With one type of unit, nonlocal effects are tailored by varying array periods. ASRs at the metasurface's edge lack sufficient interactions, resulting in stronger dark-field scattering and thus edge emission properties of the metasurface. Pixel-level spatial control is demonstrated by simply erasing some units, providing more flexibility than conventional local metasurfaces. This work paves the way for manipulating nonlocal effects and facilitates applications in optical trapping and sorting at the nanoscale.
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Affiliation(s)
- Jin Yao
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Wei-Lun Hsu
- Department of Optics and Photonics, National Central University, Taoyuan 320371, Taiwan
| | - Yao Liang
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Rong Lin
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Mu Ku Chen
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Din Ping Tsai
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
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5
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Kan Y, Liu X, Kumar S, Bozhevolnyi SI. Tempering Multichannel Photon Emission from Emitter-Coupled Holographic Metasurfaces. ACS PHOTONICS 2024; 11:1584-1591. [PMID: 38645997 PMCID: PMC11027142 DOI: 10.1021/acsphotonics.3c01745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 04/23/2024]
Abstract
On-chip manipulation of photon emission from quantum emitters (QEs) is crucial for quantum nanophotonics and advanced optical applications. At the same time, the general design strategy is still elusive, especially for fully exploring the degrees of freedom of multiple channels. Here, the vectorial scattering holography (VSH) approach developed recently for flexibly designing QE-coupled metasurfaces is extended to tempering the strength of QE emission into a particular channel. The VSH power is demonstrated by designing, fabricating, and optically characterizing on-chip QE sources emitted into six differently oriented propagation channels, each representing the entangled state of orthogonal circular polarizations with different topological charges and characterized with a specific relative strength. We postulate that the demonstration of tempered multichannel photon emission from QE-coupled metasurfaces significantly broadens the possibilities provided by the holographic metasurface platform, especially those relevant for high-dimensional quantum information processing.
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Affiliation(s)
- Yinhui Kan
- Center for Nano Optics, University of Southern Denmark, Odense M DK-5230, Denmark
| | - Xujing Liu
- Center for Nano Optics, University of Southern Denmark, Odense M DK-5230, Denmark
| | - Shailesh Kumar
- Center for Nano Optics, University of Southern Denmark, Odense M DK-5230, Denmark
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6
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Zheng H, Liu Q, Kravchenko II, Zhang X, Huo Y, Valentine JG. Multichannel meta-imagers for accelerating machine vision. NATURE NANOTECHNOLOGY 2024; 19:471-478. [PMID: 38177276 PMCID: PMC11031328 DOI: 10.1038/s41565-023-01557-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 10/27/2023] [Indexed: 01/06/2024]
Abstract
Rapid developments in machine vision technology have impacted a variety of applications, such as medical devices and autonomous driving systems. These achievements, however, typically necessitate digital neural networks with the downside of heavy computational requirements and consequent high energy consumption. As a result, real-time decision-making is hindered when computational resources are not readily accessible. Here we report a meta-imager designed to work together with a digital back end to offload computationally expensive convolution operations into high-speed, low-power optics. In this architecture, metasurfaces enable both angle and polarization multiplexing to create multiple information channels that perform positively and negatively valued convolution operations in a single shot. We use our meta-imager for object classification, achieving 98.6% accuracy in handwritten digits and 88.8% accuracy in fashion images. Owing to its compactness, high speed and low power consumption, our approach could find a wide range of applications in artificial intelligence and machine vision applications.
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Affiliation(s)
- Hanyu Zheng
- Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN, USA
| | - Quan Liu
- Department of Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Ivan I Kravchenko
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Xiaomeng Zhang
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Yuankai Huo
- Department of Computer Science, Vanderbilt University, Nashville, TN, USA
| | - Jason G Valentine
- Department of Mechanical Engineering, Vanderbilt University, Nashville, TN, USA.
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7
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Ma J, Zhang J, Horder J, Sukhorukov AA, Toth M, Neshev DN, Aharonovich I. Engineering Quantum Light Sources with Flat Optics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2313589. [PMID: 38477536 DOI: 10.1002/adma.202313589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/26/2024] [Indexed: 03/14/2024]
Abstract
Quantum light sources are essential building blocks for many quantum technologies, enabling secure communication, powerful computing, and precise sensing and imaging. Recent advancements have witnessed a significant shift toward the utilization of "flat" optics with thickness at subwavelength scales for the development of quantum light sources. This approach offers notable advantages over conventional bulky counterparts, including compactness, scalability, and improved efficiency, along with added functionalities. This review focuses on the recent advances in leveraging flat optics to generate quantum light sources. Specifically, the generation of entangled photon pairs through spontaneous parametric down-conversion in nonlinear metasurfaces, and single photon emission from quantum emitters including quantum dots and color centers in 3D and 2D materials are explored. The review covers theoretical principles, fabrication techniques, and properties of these sources, with particular emphasis on the enhanced generation and engineering of quantum light sources using optical resonances supported by nanostructures. The diverse application range of these sources is discussed and the current challenges and perspectives in the field are highlighted.
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Affiliation(s)
- Jinyong Ma
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
| | - Jihua Zhang
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, P. R. China
| | - Jake Horder
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Andrey A Sukhorukov
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
| | - Milos Toth
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Dragomir N Neshev
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, Australian National University, Canberra, 2600, Australia
| | - Igor Aharonovich
- ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
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8
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Zhang Y, He Z, Tong X, Garrett DC, Cao R, Wang LV. Quantum imaging of biological organisms through spatial and polarization entanglement. SCIENCE ADVANCES 2024; 10:eadk1495. [PMID: 38457506 PMCID: PMC10923495 DOI: 10.1126/sciadv.adk1495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/06/2024] [Indexed: 03/10/2024]
Abstract
Quantum imaging holds potential benefits over classical imaging but has faced challenges such as poor signal-to-noise ratios, low resolvable pixel counts, difficulty in imaging biological organisms, and inability to quantify full birefringence properties. Here, we introduce quantum imaging by coincidence from entanglement (ICE), using spatially and polarization-entangled photon pairs to overcome these challenges. With spatial entanglement, ICE offers higher signal-to-noise ratios, greater resolvable pixel counts, and the ability to image biological organisms. With polarization entanglement, ICE provides quantitative quantum birefringence imaging capability, where both the phase retardation and the principal refractive index axis angle of an object can be remotely and instantly quantified without changing the polarization states of the photons incident on the object. Furthermore, ICE enables 25 times greater suppression of stray light than classical imaging. ICE has the potential to pave the way for quantum imaging in diverse fields, such as life sciences and remote sensing.
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Affiliation(s)
| | | | | | - David C. Garrett
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Rui Cao
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Lihong V. Wang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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Zhao Y, Liu F, Sui Z, Kong C, Dai S, Lin Y, Zeng Z, Jiang C. Circular-target-style bifocal zoom metalens. OPTICS EXPRESS 2024; 32:3241-3250. [PMID: 38297550 DOI: 10.1364/oe.514548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 01/03/2024] [Indexed: 02/02/2024]
Abstract
Optical zoom plays an important role in realizing high-quality image magnification, especially in photography, telescopes, microscopes, etc. Compared to traditional bulky zoom lenses, the high versatility and flexibility of metalens design provide opportunities for modern electronic and photonic systems with demands for miniature and lightweight optical zoom. Here, we propose an ultra-thin, lightweight and compact bifocal zoom metalens, which consists of a conventional circular sub-aperture and a sparse annular sub-aperture with different focal lengths. The imaging resolutions of such single zoom metalens with 164 lp/mm and 117 lp/mm at magnifications of 1× and 2× have been numerically and experimentally demonstrated, respectively. Furthermore, clear zoom images of a dragonfly wing pattern have been also achieved using this zoom metalens, showing its distinctive aspect in biological imaging. Our results provide an approach for potential applications in integrated optical systems, miniaturized imaging devices, and wearable devices.
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10
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Liu J, Yang Q, Shou Y, Chen S, Shu W, Chen G, Wen S, Luo H. Metasurface-Assisted Quantum Nonlocal Weak-Measurement Microscopy. PHYSICAL REVIEW LETTERS 2024; 132:043601. [PMID: 38335360 DOI: 10.1103/physrevlett.132.043601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 01/02/2024] [Indexed: 02/12/2024]
Abstract
In standard quantum weak measurements, preselection and postselection of quantum states are implemented in the same photon. Here we go beyond this restrictive setting and demonstrate that the preselection and postselection can be performed in two different photons, if the two photons are polarization entangled. The Pancharatnam-Berry phase metasurface is incorporated in the weak measurement system to perform weak coupling between probe wave function and spin observable. By introducing nonlocal weak measurement into the microscopy imaging system, it allows us to remotely switch different microscopy imaging modes of pure-phase objects, including bright-field, differential, and phase reconstruction. Furthermore, we demonstrate that the nonlocal weak-measurement scheme can prevent almost all environmental noise photons from detection and thus achieves a higher image contrast than the standard scheme at a low photon level. Our results provide the possibility to develop a quantum nonlocal weak-measurement microscope for label-free imaging of transparent biological samples.
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Affiliation(s)
- Jiawei Liu
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Qiang Yang
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Yichang Shou
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Shizhen Chen
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Weixing Shu
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Geng Chen
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
| | - Shuangchun Wen
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Hailu Luo
- Laboratory for Spin Photonics, School of Physics and Electronics, Hunan University, Changsha 410082, China
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11
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Zhang C, Chen L, Lin Z, Song J, Wang D, Li M, Koksal O, Wang Z, Spektor G, Carlson D, Lezec HJ, Zhu W, Papp S, Agrawal A. Tantalum pentoxide: a new material platform for high-performance dielectric metasurface optics in the ultraviolet and visible region. LIGHT, SCIENCE & APPLICATIONS 2024; 13:23. [PMID: 38246925 PMCID: PMC10800353 DOI: 10.1038/s41377-023-01330-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/22/2023] [Accepted: 11/06/2023] [Indexed: 01/23/2024]
Abstract
Dielectric metasurfaces, composed of planar arrays of subwavelength dielectric structures that collectively mimic the operation of conventional bulk optical elements, have revolutionized the field of optics by their potential in constructing high-efficiency and multi-functional optoelectronic systems on chip. The performance of a dielectric metasurface is largely determined by its constituent material, which is highly desired to have a high refractive index, low optical loss and wide bandgap, and at the same time, be fabrication friendly. Here, we present a new material platform based on tantalum pentoxide (Ta2O5) for implementing high-performance dielectric metasurface optics over the ultraviolet and visible spectral region. This wide-bandgap dielectric, exhibiting a high refractive index exceeding 2.1 and negligible extinction coefficient across a broad spectrum, can be easily deposited over large areas with good quality using straightforward physical vapor deposition, and patterned into high-aspect-ratio subwavelength nanostructures through commonly-available fluorine-gas-based reactive ion etching. We implement a series of high-efficiency ultraviolet and visible metasurfaces with representative light-field modulation functionalities including polarization-independent high-numerical-aperture lensing, spin-selective hologram projection, and vivid structural color generation, and the devices exhibit operational efficiencies up to 80%. Our work overcomes limitations faced by scalability of commonly-employed metasurface dielectrics and their operation into the visible and ultraviolet spectral range, and provides a novel route towards realization of high-performance, robust and foundry-manufacturable metasurface optics.
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Affiliation(s)
- Cheng Zhang
- School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
| | - Lu Chen
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
- University of Maryland, College Park, MD, 20742, USA
| | - Zhelin Lin
- School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Junyeob Song
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Danyan Wang
- School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Moxin Li
- School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Okan Koksal
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Zi Wang
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
- University of Maryland, College Park, MD, 20742, USA
| | - Grisha Spektor
- National Institute of Standards and Technology, Boulder, CO, 80305, USA
| | - David Carlson
- National Institute of Standards and Technology, Boulder, CO, 80305, USA
| | - Henri J Lezec
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Wenqi Zhu
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
- University of Maryland, College Park, MD, 20742, USA
| | - Scott Papp
- National Institute of Standards and Technology, Boulder, CO, 80305, USA
| | - Amit Agrawal
- National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
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12
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Yao J, Tang S, Wang X, Lü C, Jiang Y. Manipulation of path state based on spatiotemporal dielectric metasurface. APPLIED OPTICS 2024; 63:604-610. [PMID: 38294370 DOI: 10.1364/ao.507878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/19/2023] [Indexed: 02/01/2024]
Abstract
In this work, a spatiotemporal metasurface is proposed to manipulate the path of photons flexibly. The spatial modulation is induced by the rectangle silicon units aligned on silica in a manner with a phase gradient only for y-polarized photons, and the temporal modulation is contributed by the pumps of constructing Kerr dynamic gratings. By quantizing designed metasurfaces, the analytical solutions of output photon states can be derived correspondingly. Reversal design could be implemented by tailoring the profile of higher harmonics to infer the intensity of pumps, size of meta-atoms, and initial state. The path-polarization entanglement and correlations of output photons are realized, and then a CNOT gate is obtained by utilizing the deflection of the photon path. This work provides a scheme to deal with the spatiotemporal metasurfaces and expands the applications of metasurfaces in the quantum realm.
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13
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Cai G, Li Y, Zhang Y, Jiang X, Chen Y, Qu G, Zhang X, Xiao S, Han J, Yu S, Kivshar Y, Song Q. Compact angle-resolved metasurface spectrometer. NATURE MATERIALS 2024; 23:71-78. [PMID: 37919349 DOI: 10.1038/s41563-023-01710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 10/02/2023] [Indexed: 11/04/2023]
Abstract
Light scattered or radiated from a material carries valuable information on the said material. Such information can be uncovered by measuring the light field at different angles and frequencies. However, this technique typically requires a large optical apparatus, hampering the widespread use of angle-resolved spectroscopy beyond the lab. Here we demonstrate compact angle-resolved spectral imaging by combining a tunable metasurface-based spectrometer array and a metalens. With this approach, even with a miniaturized spectrometer footprint of only 4 × 4 μm2, we demonstrate a wavelength accuracy of 0.17 nm, spectral resolution of 0.4 nm and a linear dynamic range of 149 dB. Moreover, our spectrometer has a detection limit of 1.2 fJ, and can be patterned to an array for spectral imaging. Placing such a spectrometer array directly at the back focal plane of a metalens, we achieve an angular resolution of 4.88 × 10-3 rad. Our angle-resolved spectrometers empowered by metalenses can be employed towards enhancing advanced optical imaging and spectral analysis applications.
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Affiliation(s)
- Guiyi Cai
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China
| | - Yanhao Li
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China
| | - Yao Zhang
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China
| | - Xiong Jiang
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China
| | - Yimu Chen
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China
| | - Geyang Qu
- Pengcheng Laboratory, Shenzhen, People's Republic of China
| | - Xudong Zhang
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China
| | - Shumin Xiao
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China.
- Pengcheng Laboratory, Shenzhen, People's Republic of China.
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, People's Republic of China.
| | - Jiecai Han
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Shaohua Yu
- Pengcheng Laboratory, Shenzhen, People's Republic of China.
| | - Yuri Kivshar
- Nonlinear Physics Center, Research School of Physics, Australian National University, Canberra, Australian Capital Territory, Australia.
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao, People's Republic of China.
| | - Qinghai Song
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen, People's Republic of China.
- Pengcheng Laboratory, Shenzhen, People's Republic of China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, People's Republic of China.
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14
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Hsu WL, Huang CF, Tan CC, Liu NYC, Chu CH, Huang PS, Wu PC, Yiin SJ, Tanaka T, Weng CJ, Wang CM. High-Resolution Metalens Imaging with Sequential Artificial Intelligence Models. NANO LETTERS 2023; 23:11614-11620. [PMID: 37937950 DOI: 10.1021/acs.nanolett.3c03416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
An analysis of the optical response of a GaN-based metalens was conducted alongside the utilization of two sequential artificial intelligence (AI) models in addressing the occasional issues of blurriness and color cast in captured images. The optical loss of the metalens in the blue spectral range was found to have resulted in the color cast of images. Autoencoder and CodeFormer sequential models were employed in order to correct the color cast and reconstruct image details, respectively. Said sequential models successfully addressed the color cast and reconstructed details for all of the allocated face image categories. Subsequently, the CIE 1931 chromaticity diagrams and peak signal-to-noise ratio analysis provided numerical evidence of the AI models' effectiveness in image reconstruction. Furthermore, the AI models can still repair the image without blue information. Overall, the integration of metalens and artificial intelligence models marks a breakthrough in enhancing the performance of full-color metalens-based imaging systems.
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Affiliation(s)
- Wei-Lun Hsu
- Department of Optics and Photonics, National Central University, Taoyuan, 320371, Taiwan
| | - Chen-Fu Huang
- Department of Optics and Photonics, National Central University, Taoyuan, 320371, Taiwan
| | - Chih-Chun Tan
- Department of Optics and Photonics, National Central University, Taoyuan, 320371, Taiwan
| | - Noreena Yi-Chin Liu
- Design & Creative Industries Faculty of Arts and Social Sciences, Universiti Brunei Darussalam, Gadong, BE1410, Brunei
| | - Cheng Hung Chu
- YongLin Institute of Health, National Taiwan University, Taipei, 106038 Taiwan
| | - Po-Sheng Huang
- Department of Photonics, National Cheng Kung University, Tainan, 70101 Taiwan
| | - Pin Chieh Wu
- Department of Photonics, National Cheng Kung University, Tainan, 70101 Taiwan
- Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan, 70101, Taiwan
- Meta-nanoPhotonics Center, National Cheng Kung University, Tainan 70101, Taiwan
| | | | - Takuo Tanaka
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Saitama, 3510198, Japan
| | - Chun-Jen Weng
- Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu, 30076, Taiwan
| | - Chih-Ming Wang
- Department of Optics and Photonics, National Central University, Taoyuan, 320371, Taiwan
- Optical Science Center, National Central University, Taoyuan, 320371, Taiwan
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15
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Chu CH, Chia YH, Hsu HC, Vyas S, Tsai CM, Yamaguchi T, Tanaka T, Chen HW, Luo Y, Yang PC, Tsai DP. Intelligent Phase Contrast Meta-Microscope System. NANO LETTERS 2023; 23:11630-11637. [PMID: 38038680 DOI: 10.1021/acs.nanolett.3c03484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Phase contrast imaging techniques enable the visualization of disparities in the refractive index among various materials. However, these techniques usually come with a cost: the need for bulky, inflexible, and complicated configurations. Here, we propose and experimentally demonstrate an ultracompact meta-microscope, a novel imaging platform designed to accomplish both optical and digital phase contrast imaging. The optical phase contrast imaging system is composed of a pair of metalenses and an intermediate spiral phase metasurface located at the Fourier plane. The performance of the system in generating edge-enhanced images is validated by imaging a variety of human cells, including lung cell lines BEAS-2B, CLY1, and H1299 and other types. Additionally, we integrate the ResNet deep learning model into the meta-microscope to transform bright-field images into edge-enhanced images with high contrast accuracy. This technology promises to aid in the development of innovative miniature optical systems for biomedical and clinical applications.
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Affiliation(s)
- Cheng Hung Chu
- YongLin Institute of Health, National Taiwan University, Taipei 10672, Taiwan
| | - Yu-Hsin Chia
- Institute of Medical Device and Imaging, National Taiwan University, Taipei 10051, Taiwan
- Department of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan
| | - Hung-Chuan Hsu
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Sunil Vyas
- Institute of Medical Device and Imaging, National Taiwan University, Taipei 10051, Taiwan
| | - Chen-Ming Tsai
- Institute of Medical Device and Imaging, National Taiwan University, Taipei 10051, Taiwan
| | - Takeshi Yamaguchi
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Saitama 351-0198, Japan
| | - Takuo Tanaka
- Innovative Photon Manipulation Research Team, RIKEN Center for Advanced Photonics, Saitama 351-0198, Japan
| | - Huei-Wen Chen
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
- Genome and Systems Biology Degree Program, National Taiwan University and Academia Sinica, Taipei 100, Taiwan
| | - Yuan Luo
- YongLin Institute of Health, National Taiwan University, Taipei 10672, Taiwan
- Institute of Medical Device and Imaging, National Taiwan University, Taipei 10051, Taiwan
- Department of Biomedical Engineering, National Taiwan University, Taipei 10051, Taiwan
- Program for Precision Health and Intelligent Medicine, National Taiwan University, Taipei 106319, Taiwan, R.O.C
| | - Pan-Chyr Yang
- YongLin Institute of Health, National Taiwan University, Taipei 10672, Taiwan
- Program for Precision Health and Intelligent Medicine, National Taiwan University, Taipei 106319, Taiwan, R.O.C
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University, Taipei 10002, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Din Ping Tsai
- Department of Electrical Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon 999077, Hong Kong
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon 99907, Hong Kong
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16
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Su VC, Xu KL. GaN vortex metasurface for interference and broadband characteristics. OPTICS EXPRESS 2023; 31:43089-43099. [PMID: 38178411 DOI: 10.1364/oe.509177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 11/20/2023] [Indexed: 01/06/2024]
Abstract
We experimentally demonstrate a highly efficient metasurface-based optical vortex beam (OVB) composed of high-aspect-ratio gallium nitride (GaN) meta-structures with an exceptional simulated absolute polarization conversion efficiency (APCE) of up to 98%. A flower-like interference pattern emerges at the converging distance of the device with the helicity switching in spiral and dislocation interference patterns beyond this point, as confirmed through meticulous Mach-Zehnder interferometer analysis. The device also performs broadband capabilities across visible wavelengths. Experimentally demonstrated, the annular shape adeptly expands its diameter with increasing incident wavelengths. This phenomenon is rooted in the fascinating anomalous refractive and reflective characteristics inherent to subwavelength-period metasurfaces.
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17
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Sardana J, Devinder S, Zhu W, Agrawal A, Joseph J. Dielectric Metasurface Enabled Compact, Single-Shot Digital Holography for Quantitative Phase Imaging. NANO LETTERS 2023. [PMID: 38037916 DOI: 10.1021/acs.nanolett.3c03515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Quantitative phase imaging (QPI) enables nondestructive, real-time, label-free imaging of transparent specimens and can reveal information about their fundamental properties such as cell size and morphology, mass density, particle dynamics, and cellular fluctuations. Development of high-performance and low-cost quantitative phase imaging systems is thus required in many fields, including on-site biomedical imaging and industrial inspection. Here, we propose an ultracompact, highly stable interferometer based on a single-layer dielectric metasurface for common path off-axis digital holography and experimentally demonstrate quantitative phase imaging. The interferometric imaging system leveraging an ultrathin multifunctional metasurface captures image plane holograms in a single shot and provides quantitative phase information on the test samples for extraction of its physical properties. With the benefits of planar engineering and high integrability, the proposed metasurface-based method establishes a stable miniaturized QPI system for reliable and cost-effective point-of-care devices, live cell imaging, 3D topography, and edge detection for optical computing.
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Affiliation(s)
- Jyoti Sardana
- Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Shital Devinder
- Centre for Sensors, Instrumentation and Cyber Physical System Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Wenqi Zhu
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Amit Agrawal
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Joby Joseph
- Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India
- Centre for Sensors, Instrumentation and Cyber Physical System Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
- Optics and Photonics Center, Indian Institute of Technology Delhi, New Delhi 110016, India
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18
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Mei F, Qu G, Sha X, Han J, Yu M, Li H, Chen Q, Ji Z, Ni J, Qiu CW, Song Q, Kivshar Y, Xiao S. Cascaded metasurfaces for high-purity vortex generation. Nat Commun 2023; 14:6410. [PMID: 37828022 PMCID: PMC10570278 DOI: 10.1038/s41467-023-42137-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023] Open
Abstract
We introduce a new paradigm for generating high-purity vortex beams with metasurfaces. By applying optical neural networks to a system of cascaded phase-only metasurfaces, we demonstrate the efficient generation of high-quality Laguerre-Gaussian (LG) vortex modes. Our approach is based on two metasurfaces where one metasurface redistributes the intensity profile of light in accord with Rayleigh-Sommerfeld diffraction rules, and then the second metasurface matches the required phases for the vortex beams. Consequently, we generate high-purity LGp,l optical modes with record-high Laguerre polynomial orders p = 10 and l = 200, and with the purity in p, l and relative conversion efficiency as 96.71%, 85.47%, and 70.48%, respectively. Our engineered cascaded metasurfaces suppress greatly the backward reflection with a ratio exceeding -17 dB. Such higher-order optical vortices with multiple orthogonal states can revolutionize next-generation optical information processing.
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Affiliation(s)
- Feng Mei
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Geyang Qu
- Pengcheng Laboratory, 518055, Shenzhen, Guangdong, P. R. China
| | - Xinbo Sha
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Jing Han
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Moxin Yu
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Hao Li
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Qinmiao Chen
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Ziheng Ji
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China
| | - Jincheng Ni
- Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore, Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore, Singapore
| | - Qinghai Song
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China.
- Pengcheng Laboratory, 518055, Shenzhen, Guangdong, P. R. China.
| | - Yuri Kivshar
- Nonlinear Physics Center, Research School of Physics, Australian National University, Canberra, ACT2601, Australia.
- Qingdao Innovation and Development Center, Harbin Engineering University, 266000, Qingdao, Shandong, P. R. China.
| | - Shumin Xiao
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology Shenzhen, 518055, Shenzhen, P. R. China.
- Pengcheng Laboratory, 518055, Shenzhen, Guangdong, P. R. China.
- Collaborative Innovation Center of Extreme Optics, Shanxi University, 030006, Taiyuan, Shanxi, P.R. China.
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19
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Chen MH, Chen BW, Xu KL, Su VC. Wide-Angle Optical Metasurface for Vortex Beam Generation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2680. [PMID: 37836321 PMCID: PMC10574251 DOI: 10.3390/nano13192680] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
In this work, we have achieved an advancement by integrating wide-angle capacity into vortex beams with an impressive topological charge (TC) of 12. This accomplishment was realized through the meticulous engineering of a propagation-phase-designed metasurface. Comprising gallium nitride (GaN), meta-structures characterized by their high-aspect ratio, this metasurface exhibits an average co-polarization transmission efficiency, reaching a remarkable simulated value of up to 97%. The intricate spiral patterns, along with their respective quantification, have been meticulously investigated through tilt-view scanning electron microscopy (SEM) and were further analyzed through the Mach-Zehnder interferometer. A captivating revelation emerged, a distinctive petal-like interference pattern manifests prior to the metasurface's designed focal distance. The occurrence of this petal-like pattern at a specific z-axis position prompts a deliberate manipulation of the helicity of the spiral branches. This strategic helicity alteration is intrinsically tied to the achievement of a minimized donut diameter at the designed focal length. In regard to the angular capability of the device, the captured images continuously showcase prominent attributes within incident angles spanning up to 30 degrees. However, as incident angles surpass the 30-degree threshold, the measured values diverge from their corresponding theoretical projections, resulting in a progressive reduction in the completeness of the donut-shaped structure.
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Affiliation(s)
| | | | | | - Vin-Cent Su
- Department of Electrical Engineering, National United University, Miaoli 36003, Taiwan; (M.-H.C.); (B.-W.C.); (K.-L.X.)
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20
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Liu X, Kan Y, Kumar S, Komisar D, Zhao C, Bozhevolnyi SI. On-chip generation of single-photon circularly polarized single-mode vortex beams. SCIENCE ADVANCES 2023; 9:eadh0725. [PMID: 37556533 PMCID: PMC10411890 DOI: 10.1126/sciadv.adh0725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/11/2023] [Indexed: 08/11/2023]
Abstract
Generation of single photons carrying spin and orbital angular momenta (SAM and OAM) opens enticing perspectives for exploiting multiple degrees of freedom for high-dimensional quantum systems. However, on-chip generation of single photons encoded with single-mode SAM-OAM states has been a major challenge. Here, by using carefully designed anisotropic nanodimers fabricated atop a substrate, supporting surface plasmon polariton (SPP) propagation, and accurately positioned around a quantum emitter (QE), we enable nonradiative QE-SPP coupling and the SPP outcoupling into free-space propagating radiation featuring the designed SAM and OAM. We demonstrate on-chip room-temperature generation of well-collimated (divergence < 7.5°) circularly polarized (chirality > 0.97) single-mode vortex beams with different topological charges (𝓁 = 0, 1, and 2) and high single-photon purity, g(2)(0) < 0.15. The developed approach can straightforwardly be extended to produce multiple, differently polarized, single-mode single-photon radiation channels and enable thereby realization of high-dimensional quantum sources for advanced quantum photonic technologies.
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Affiliation(s)
- Xujing Liu
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai 200240, China
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Yinhui Kan
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Shailesh Kumar
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Danylo Komisar
- Centre for Nano Optics, University of Southern Denmark, DK-5230 Odense M, Denmark
| | - Changying Zhao
- Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai 200240, China
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21
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Chen MK, Liu X, Wu Y, Zhang J, Yuan J, Zhang Z, Tsai DP. A Meta-Device for Intelligent Depth Perception. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2107465. [PMID: 35986633 DOI: 10.1002/adma.202107465] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 08/09/2022] [Indexed: 06/15/2023]
Abstract
The optical illusion affects depth-sensing due to the limited and specific light-field information acquired by single-lens imaging. The incomplete depth information or visual deception would cause cognitive errors. To resolve this problem, an intelligent and compact depth-sensing meta-device that is miniaturized, integrated, and applicable for diverse scenes in all light levels is demonstrated. The compact and multifunction stereo vision system adopts an array with 3600 achromatic meta-lenses and a size of 1.2 × 1.2 mm2 to measure the depth over a 30 cm range with deep-learning support. The meta-lens array can act as multiple imaging lenses to collect light field information. It can also work with a light source as an active optical device to project a structured light. The meta-lens array can serve as the core functional component of a light-field imaging system under bright conditions or a structured-light projection system in the dark. The depth information in both ways can be analyzed and extracted by the convolutional neural network. This work provides a new avenue for the applications such as autonomous driving, machine vision, human-computer interaction, augmented reality, biometric identification, etc.
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Affiliation(s)
- Mu Ku Chen
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
- Centre for Biosystems, Neuroscience and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
| | - Xiaoyuan Liu
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Yongfeng Wu
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Jingcheng Zhang
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Jiaqi Yuan
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Zhengnan Zhang
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Din Ping Tsai
- Department of Electrical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
- Centre for Biosystems, Neuroscience and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
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22
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Wang B, Li Y, Shen X, Krolikowski W. Asymmetric wavefront shaping with nonreciprocal 3D nonlinear detour phase hologram. OPTICS EXPRESS 2023; 31:25143-25152. [PMID: 37475326 DOI: 10.1364/oe.490167] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/07/2023] [Indexed: 07/22/2023]
Abstract
Asymmetric control of light with nonlinear material is of great significance in the design of novel micro-photonic components, such as asymmetric imaging devices and nonreciprocal directional optical filters. However, the use of nonlinear photonic crystals for asymmetric optical transmission, to the best of our knowledge, is still an untouched area of research. Herein we propose the 3D nonlinear detour phase holography for realizing asymmetric SH wavefront shaping by taking advantage of the dependence of the SH phase on the propagation direction of the excitation beam. With the proposed method, the designed nonreciprocal 3D nonlinear detour phase hologram yields SH phases with opposite signs for the forward and backward transmission situations. Moreover, the quasi-phase-matching scheme and orbital angular momentum conservation in the asymmetric SH wavefront shaping process are also discussed. This study conceptually extends the 2D nonlinear detour phase holography into 3D space to build the nonreciprocal 3D nonlinear detour phase hologram for achieving SH twin-image elimination and asymmetric SH wavefront shaping, offering new possibilities for the design of nonreciprocal optical devices.
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23
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Wen Y, Giorgianni F, Ilyakov I, Quan B, Kovalev S, Wang C, Vicario C, Deinert JC, Xiong X, Bailey J, Chen M, Ponomaryov A, Awari N, Rovere A, Sun J, Morandotti R, Razzari L, Aeppli G, Li J, Zhou J. A universal route to efficient non-linear response via Thomson scattering in linear solids. Natl Sci Rev 2023; 10:nwad136. [PMID: 37396487 PMCID: PMC10313094 DOI: 10.1093/nsr/nwad136] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/25/2023] [Accepted: 05/05/2023] [Indexed: 07/04/2023] Open
Abstract
Non-linear materials are cornerstones of modern optics and electronics. Strong dependence on the intrinsic properties of particular materials, however, inhibits the at-will extension of demanding non-linear effects, especially those second-order ones, to widely adopted centrosymmetric materials (for example, silicon) and technologically important burgeoning spectral domains (for example, terahertz frequencies). Here we introduce a universal route to efficient non-linear responses enabled by exciting non-linear Thomson scattering, a fundamental process in electrodynamics that was known to occur only in relativistic electrons in metamaterial composed of linear materials. Such a mechanism modulates the trajectory of charges, either intrinsically or extrinsically provided in solids, at twice the driving frequency, allowing second-harmonic generation at terahertz frequencies on crystalline silicon with extremely large non-linear susceptibility in our proof-of-concept experiments. By offering a substantially material- and frequency-independent platform, our approach opens new possibilities in the fields of on-demand non-linear optics, terahertz sources, strong field light-solid interactions and integrated photonic circuits.
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Affiliation(s)
- Yongzheng Wen
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | | | - Igor Ilyakov
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - Baogang Quan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Sergey Kovalev
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - Chen Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Carlo Vicario
- Paul Scherrer Institut, Villigen PSI 5232, Switzerland
| | | | - Xiaoyu Xiong
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Joe Bailey
- Paul Scherrer Institut, Villigen PSI 5232, Switzerland
- Institut de Physique, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Min Chen
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | | | - Nilesh Awari
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - Andrea Rovere
- Institut National de la Recherche Scientifique (INRS), Centre Énergie, Matériaux et Télécommunications (EMT), Varennes J3X1P7, Canada
| | - Jingbo Sun
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Roberto Morandotti
- Institut National de la Recherche Scientifique (INRS), Centre Énergie, Matériaux et Télécommunications (EMT), Varennes J3X1P7, Canada
| | - Luca Razzari
- Institut National de la Recherche Scientifique (INRS), Centre Énergie, Matériaux et Télécommunications (EMT), Varennes J3X1P7, Canada
| | - Gabriel Aeppli
- Paul Scherrer Institut, Villigen PSI 5232, Switzerland
- Institut de Physique, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
- Department of Physics and Quantum Center, ETH Zürich, Zürich CH-8093, Switzerland
| | - Junjie Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ji Zhou
- Corresponding author. E-mail:
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24
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Yang Y, Seong J, Choi M, Park J, Kim G, Kim H, Jeong J, Jung C, Kim J, Jeon G, Lee KI, Yoon DH, Rho J. Integrated metasurfaces for re-envisioning a near-future disruptive optical platform. LIGHT, SCIENCE & APPLICATIONS 2023; 12:152. [PMID: 37339970 DOI: 10.1038/s41377-023-01169-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/16/2023] [Accepted: 04/24/2023] [Indexed: 06/22/2023]
Abstract
Metasurfaces have been continuously garnering attention in both scientific and industrial fields, owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial structures. To date, research has mainly focused on the full control of electromagnetic characteristics, including polarization, phase, amplitude, and even frequencies. Consequently, versatile possibilities of electromagnetic wave control have been achieved, yielding practical optical components such as metalenses, beam-steerers, metaholograms, and sensors. Current research is now focused on integrating the aforementioned metasurfaces with other standard optical components (e.g., light-emitting diodes, charged-coupled devices, micro-electro-mechanical systems, liquid crystals, heaters, refractive optical elements, planar waveguides, optical fibers, etc.) for commercialization with miniaturization trends of optical devices. Herein, this review describes and classifies metasurface-integrated optical components, and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality, light detection and ranging, and sensors. In conclusion, this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.
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Affiliation(s)
- Younghwan Yang
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junhwa Seong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Minseok Choi
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junkyeong Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Gyeongtae Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hongyoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Junhyeon Jeong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Chunghwan Jung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Joohoon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Gyoseon Jeon
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Kyung-Il Lee
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Dong Hyun Yoon
- Research Institute of Industrial Science and Technology (RIST), Pohang, 37673, Republic of Korea
| | - Junsuk Rho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
- POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang, 37673, Republic of Korea.
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25
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Wang M, Lin Y, Wang M, Yi JM, Gao X, Li DY, Liu JP, Cao B, Wang CH, Wang JF, Xu K. Double-sided asymmetric metasurfaces achieving sub-microscale focusing from a GaN green laser diode. OPTICS EXPRESS 2023; 31:20740-20749. [PMID: 37381190 DOI: 10.1364/oe.493257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 05/28/2023] [Indexed: 06/30/2023]
Abstract
We proposed and demonstrated a highly efficient sub-microscale focusing from a GaN green laser diode (LD) integrated with double-sided asymmetric metasurfaces. The metasurfaces consist of two nanostructures in a GaN substrate: nanogratings on one side and a geometric phase based metalens on the other side. When it was integrated on the edge emission facet of a GaN green LD, linearly polarized emission was firstly converted to the circularly polarized state by the nanogratings functioning as a quarter-wave plate, the phase gradient was then controlled by the metalens on the exit side. In the end, the double-sided asymmetric metasurfaces achieve a sub micro-focusing from linearly polarized states. Experimental results show the full width at half maximum of the focused spot size is about 738 nm at the wavelength 520 nm and the focusing efficiency is about 72.8%. Our results lay a foundation for the multi-functional applications in optical tweezers, laser direct writing, visible light communication, and biological chip.
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26
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Wang M, Chen L, Choi DY, Huang S, Wang Q, Tu C, Cheng H, Tian J, Li Y, Chen S, Wang HT. Characterization of Orbital Angular Momentum Quantum States Empowered by Metasurfaces. NANO LETTERS 2023; 23:3921-3928. [PMID: 37102437 DOI: 10.1021/acs.nanolett.3c00554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Twisted photons can in principle carry a discrete unbounded amount of orbital angular momentum (OAM), which are of great significance for quantum communication and fundamental tests of quantum theory. However, the methods for characterization of the OAM quantum states present a fundamental limit for miniaturization. Metasurfaces can exploit new degrees of freedom to manipulate optical fields beyond the capabilities of bulk optics, opening a broad range of novel and superior applications in quantum photonics. Here we present a scheme to reconstruct the density matrix of the OAM quantum states of single photons with all-dielectric metasurfaces composed of birefringent meta-atoms. We have also measured the Schmidt number of the OAM entanglement by the multiplexing of multiple degrees of freedom. Our work represents a step toward the practical application of quantum metadevices for the measurement of OAM quantum states in free-space quantum imaging and communications.
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Affiliation(s)
- Min Wang
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Lieyu Chen
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Duk-Yong Choi
- Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, Australian Central Territory 2601, Australia
- College of Information Science and Technology, Jinan University, Guangzhou 510632, People's Republic of China
| | - Shuangyin Huang
- National Laboratory of Solid State Microstructures and School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Qiang Wang
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Chenghou Tu
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Hua Cheng
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Jianguo Tian
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Yongnan Li
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Shuqi Chen
- The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
- School of TEDA Institute of Applied Physics, Nankai University, Tianjin 300071, People's Republic of China
- The Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
| | - Hui-Tian Wang
- National Laboratory of Solid State Microstructures and School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
- The Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
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27
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Chen S, Huang J, Yin S, Milosevic MM, Pi H, Yan J, Chong HMH, Fang X. Metasurfaces integrated with a single-mode waveguide array for off-chip wavefront shaping. OPTICS EXPRESS 2023; 31:15876-15887. [PMID: 37157678 DOI: 10.1364/oe.488959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Integration of metasurfaces and SOI (silicon-on-insulator) chips can leverage the advantages of both metamaterials and silicon photonics, enabling novel light shaping functionalities in planar, compact devices that are compatible with CMOS (complementary metal-oxide-semiconductor) production. To facilitate light extraction from a two-dimensional metasurface vertically into free space, the established approach is to use a wide waveguide. However, the multi-modal feature of such wide waveguides can render the device vulnerable to mode distortion. Here, we propose a different approach, where an array of narrow, single-mode waveguides is used instead of a wide, multi-mode waveguide. This approach tolerates nano-scatterers with a relatively high scattering efficiency, for example Si nanopillars that are in direct contact with the waveguides. Two example devices are designed and numerically studied as demonstrations: the first being a beam deflector that deflects light into the same direction regardless of the direction of input light, and the second being a light-focusing metalens. This work shows a straightforward approach of metasurface-SOI chip integration, which could be useful for emerging applications such as metalens arrays and neural probes that require off-chip light shaping from relatively small metasurfaces.
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28
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He Z, Zhang Y, Tong X, Li L, Wang LV. Quantum microscopy of cells at the Heisenberg limit. Nat Commun 2023; 14:2441. [PMID: 37117176 PMCID: PMC10147633 DOI: 10.1038/s41467-023-38191-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 04/14/2023] [Indexed: 04/30/2023] Open
Abstract
Entangled biphoton sources exhibit nonclassical characteristics and have been applied to imaging techniques such as ghost imaging, quantum holography, and quantum optical coherence tomography. The development of wide-field quantum imaging to date has been hindered by low spatial resolutions, speeds, and contrast-to-noise ratios (CNRs). Here, we present quantum microscopy by coincidence (QMC) with balanced pathlengths, which enables super-resolution imaging at the Heisenberg limit with substantially higher speeds and CNRs than existing wide-field quantum imaging methods. QMC benefits from a configuration with balanced pathlengths, where a pair of entangled photons traversing symmetric paths with balanced optical pathlengths in two arms behave like a single photon with half the wavelength, leading to a two-fold resolution improvement. Concurrently, QMC resists stray light up to 155 times stronger than classical signals. The low intensity and entanglement features of biphotons in QMC promise nondestructive bioimaging. QMC advances quantum imaging to the microscopic level with significant improvements in speed and CNR toward the bioimaging of cancer cells. We experimentally and theoretically prove that the configuration with balanced pathlengths illuminates an avenue for quantum-enhanced coincidence imaging at the Heisenberg limit.
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Affiliation(s)
- Zhe He
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 138-78, Pasadena, CA 91125, USA
| | - Yide Zhang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 138-78, Pasadena, CA 91125, USA
| | - Xin Tong
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 138-78, Pasadena, CA 91125, USA
| | - Lei Li
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 138-78, Pasadena, CA 91125, USA
| | - Lihong V Wang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 138-78, Pasadena, CA 91125, USA.
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29
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Saerens G, Dursap T, Hesner I, Duong NMH, Solntsev AS, Morandi A, Maeder A, Karvounis A, Regreny P, Chapman RJ, Danescu A, Chauvin N, Penuelas J, Grange R. Background-Free Near-Infrared Biphoton Emission from Single GaAs Nanowires. NANO LETTERS 2023; 23:3245-3250. [PMID: 37057961 PMCID: PMC10141417 DOI: 10.1021/acs.nanolett.3c00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/12/2023] [Indexed: 06/19/2023]
Abstract
The generation of photon pairs from nanoscale structures with high rates is still a challenge for the integration of quantum devices, as it suffers from parasitic signals from the substrate. In this work, we report type-0 spontaneous parametric down-conversion at 1550 nm from individual bottom-up grown zinc-blende GaAs nanowires with lengths of up to 5 μm and diameters of up to 450 nm. The nanowires were deposited on a transparent ITO substrate, and we measured a background-free coincidence rate of 0.05 Hz in a Hanbury-Brown-Twiss setup. Taking into account transmission losses, the pump fluence, and the nanowire volume, we achieved a biphoton generation of 60 GHz/Wm, which is at least 3 times higher than that of previously reported single nonlinear micro- and nanostructures. We also studied the correlations between the second-harmonic generation and the spontaneous parametric down-conversion intensities with respect to the pump polarization and in different individual nanowires.
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Affiliation(s)
- Grégoire Saerens
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Thomas Dursap
- Univ.
Lyon, CNRS, ECL, INSA Lyon, UCBL, CPE Lyon, INL, UMR 5270, 69130 Ecully, France
| | - Ian Hesner
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Ngoc M. H. Duong
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Alexander S. Solntsev
- University
of Technology Sydney, School of Mathematical
and Physical Sciences, Ultimo, New South Wales 2007, Australia
| | - Andrea Morandi
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Andreas Maeder
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Artemios Karvounis
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Philippe Regreny
- Univ.
Lyon, CNRS, ECL, INSA Lyon, UCBL, CPE Lyon, INL, UMR 5270, 69130 Ecully, France
| | - Robert J. Chapman
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
| | - Alexandre Danescu
- Univ.
Lyon, CNRS, ECL, INSA Lyon, UCBL, CPE Lyon, INL, UMR 5270, 69130 Ecully, France
| | - Nicolas Chauvin
- Univ.
Lyon, CNRS, ECL, INSA Lyon, UCBL, CPE Lyon, INL, UMR 5270, 69130 Ecully, France
| | - José Penuelas
- Univ.
Lyon, CNRS, ECL, INSA Lyon, UCBL, CPE Lyon, INL, UMR 5270, 69130 Ecully, France
| | - Rachel Grange
- ETH
Zurich, Department of Physics,
Institute for Quantum Electronics, Optical Nanomaterial Group, 8093 Zurich, Switzerland
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30
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Huang T, Ma Y, Fang Z, Zhou J, Zhou Y, Wang Z, Liu J, Wang Z, Zhang H, Wang M, Xu J, Cheng Y. Wavelength-Tunable Narrow-Linewidth Laser Diode Based on Self-Injection Locking with a High-Q Lithium Niobate Microring Resonator. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:948. [PMID: 36903826 PMCID: PMC10005327 DOI: 10.3390/nano13050948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/24/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
We demonstrate a narrow linewidth 980 nm laser by self-injection locking of an electrically pumped distributed-feedback (DFB) laser diode to a high quality (Q) factor (>105) lithium niobate (LN) microring resonator. The lithium niobate microring resonator is fabricated by photolithography-assisted chemo-mechanical etching (PLACE) technique, and the Q factor of lithium niobate microring is measured as high as 6.91 × 105. The linewidth of the multimode 980 nm laser diode, which is ~2 nm measured from its output end, is narrowed down to 35 pm with a single-mode characteristic after coupling with the high-Q LN microring resonator. The output power of the narrow-linewidth microlaser is about 4.27 mW, and the wavelength tuning range reaches 2.57 nm. This work explores a hybrid integrated narrow linewidth 980 nm laser that has potential applications in high-efficient pump laser, optical tweezers, quantum information, as well as chip-based precision spectroscopy and metrology.
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Affiliation(s)
- Ting Huang
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Yu Ma
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiwei Fang
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- Hefei National Laboratory, Hefei 230088, China
| | - Junxia Zhou
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Yuan Zhou
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhe Wang
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Jian Liu
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Zhenhua Wang
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Haisu Zhang
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Min Wang
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Jian Xu
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- Hefei National Laboratory, Hefei 230088, China
| | - Ya Cheng
- The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Hefei National Laboratory, Hefei 230088, China
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
- Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
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31
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Li X, Liu S, Wei Y, Ma J, Song C, Yu Y, Su R, Geng W, Ni H, Liu H, Su X, Niu Z, Chen YL, Liu J. Bright semiconductor single-photon sources pumped by heterogeneously integrated micropillar lasers with electrical injections. LIGHT, SCIENCE & APPLICATIONS 2023; 12:65. [PMID: 36872383 PMCID: PMC9986240 DOI: 10.1038/s41377-023-01110-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 02/07/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
The emerging hybrid integrated quantum photonics combines the advantages of different functional components into a single chip to meet the stringent requirements for quantum information processing. Despite the tremendous progress in hybrid integrations of III-V quantum emitters with silicon-based photonic circuits and superconducting single-photon detectors, on-chip optical excitations of quantum emitters via miniaturized lasers towards single-photon sources (SPSs) with low power consumptions, small device footprints, and excellent coherence properties is highly desirable yet illusive. In this work, we present realizations of bright semiconductor SPSs heterogeneously integrated with on-chip electrically-injected microlasers. Different from previous one-by-one transfer printing technique implemented in hybrid quantum dot (QD) photonic devices, multiple deterministically coupled QD-circular Bragg Grating (CBG) SPSs were integrated with electrically-injected micropillar lasers at one time via a potentially scalable transfer printing process assisted by the wide-field photoluminescence (PL) imaging technique. Optically pumped by electrically-injected microlasers, pure single photons are generated with a high-brightness of a count rate of 3.8 M/s and an extraction efficiency of 25.44%. Such a high-brightness is due to the enhancement by the cavity mode of the CBG, which is confirmed by a Purcell factor of 2.5. Our work provides a powerful tool for advancing hybrid integrated quantum photonics in general and boosts the developments for realizing highly-compact, energy-efficient and coherent SPSs in particular.
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Affiliation(s)
- Xueshi Li
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Shunfa Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Yuming Wei
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Jiantao Ma
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Changkun Song
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Ying Yu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Rongbin Su
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China
| | - Wei Geng
- Hisilicon Research, Huawei Technologies Co., Ltd, 518129, Shenzhen, China
| | - Haiqiao Ni
- State Key Laboratory for Superlattice and Microstructures, State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, 100083, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Hanqing Liu
- State Key Laboratory for Superlattice and Microstructures, State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, 100083, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Xiangbin Su
- State Key Laboratory for Superlattice and Microstructures, State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, 100083, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Zhichuan Niu
- State Key Laboratory for Superlattice and Microstructures, State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, 100083, Beijing, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China.
| | - You-Ling Chen
- State Key Laboratory for Superlattice and Microstructures, State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, 100083, Beijing, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China.
| | - Jin Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, School of Electronics and Information Technology, Sun Yat-sen University, 510275, Guangzhou, China.
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32
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Wang H, Wang H, Ruan Q, Chan JYE, Zhang W, Liu H, Rezaei SD, Trisno J, Qiu CW, Gu M, Yang JKW. Coloured vortex beams with incoherent white light illumination. NATURE NANOTECHNOLOGY 2023; 18:264-272. [PMID: 36781996 DOI: 10.1038/s41565-023-01319-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
The orbital angular momentum is a fundamental degree of freedom of light wavefronts, currently exploited in applications where information capacity is a key requirement, such as optical communication, super-resolution imaging and high-dimensional quantum computing. However, generating orbital angular momentum beams requires spatio-temporally coherent light sources (lasers or supercontinuum sources), because incoherent light would smear out the doughnut features of orbital angular momentum beams, forming polychromatic or obscured orbital angular momentum beams instead. Here we show generation of coloured orbital angular momentum beams using incoherent white light. Spatio-temporal coherence is achieved by miniaturizing spiral phase plates and integrating them with structural colour filters, three-dimensionally printed at the nanoscale. Our scheme can in principle generate multiple helical eigenstates and combine colour information into orbital angular momentum beams independently. These three-dimensional optical elements encoded with colour and orbital angular momentum information substantially increase the number of combinations for optical anti-counterfeiting and photonic lock-key devices in a pairwise fashion.
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Affiliation(s)
- Hongtao Wang
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore
| | - Hao Wang
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
| | - Qifeng Ruan
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology (Shenzhen), Shenzhen, China
| | - John You En Chan
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
| | - Wang Zhang
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
| | - Hailong Liu
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore, Singapore
| | - Soroosh Daqiqeh Rezaei
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
| | - Jonathan Trisno
- Institute of High Performance Computing, A*STAR (Agency for Science, Technology and Research), Singapore, Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Singapore.
| | - Min Gu
- Institute of Photonic Chips, University of Shanghai for Science and Technology, Shanghai, China
- Centre for Artificial-Intelligence Nanophotonics, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Joel K W Yang
- Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore.
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore, Singapore.
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33
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Fan Y, Yao J, Tsai DP. Advance of large-area achromatic flat lenses. LIGHT, SCIENCE & APPLICATIONS 2023; 12:51. [PMID: 36859363 PMCID: PMC9977846 DOI: 10.1038/s41377-023-01093-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A new framework of light coherence optimization is proposed to design non-ideal broadband achromatic lenses, enabling large-scale flat lenses' implementation and high performance. The strategy paves the way for practical planar optical devices and full-color imaging systems.
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Affiliation(s)
- Yubin Fan
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
| | - Jin Yao
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, 999077, China
| | - Din Ping Tsai
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, China.
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, 999077, China.
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong, 999077, China.
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34
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Liu J, Zhu X, Zhou Y, Zou X, Qin Z, Wang S, Zhu S, Wang Z. Metasurfaces enabled polarization-multiplexing heralded single photon imaging. OPTICS EXPRESS 2023; 31:6217-6227. [PMID: 36823883 DOI: 10.1364/oe.482426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
Quantum imaging has non-negligible advantages in terms of sensitivity, signal-to-noise ratio, and novel imaging schemes. Based on metasurfaces, the information density and stability of the quantum imaging system can be further improved. Here we experimentally demonstrate that two patterns, simultaneously and independently superimposed on a high-efficiency dielectric metasurface, can be remotely switched via polarization-entangled photon pairs. Furthermore, using the time-correlated property of entangled photon pairs, the information carried by quantum light can be remarkably discriminated from background noise. This work confirms that the phase manipulation of quantum light with metasurfaces has a huge potential in the field of quantum imaging, quantum state tomography, and also promises real-world quantum metasurface devices.
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35
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Antireflection of optical anisotropic dielectric metasurfaces. Sci Rep 2023; 13:1641. [PMID: 36717640 PMCID: PMC9887059 DOI: 10.1038/s41598-023-28619-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 01/20/2023] [Indexed: 01/31/2023] Open
Abstract
We propose a hetero-nano-fin structure to further improve the efficiency of Pancharatnam-Berry phase metasurfaces. Two hetero-nano-fin types, MgF2/GaN and MgF2/Nb2O5, were investigated. The overall polarization conversion efficiency (PCE) improved from 52.7 to 54% for the MgF2/GaN nano-fin compared with the bare GaN nano-fin. The overall PCE of the Nb2O5 nano-fin was 1.7 times higher than that of the GaN nano-fin. The overall PCE improved from 92.4% up to 96% after the application of MgF2 antireflection. Moreover, the antireflection improves efficiency by an average of 4.3% in wavelengths from 450 to 700 nm. Although the increment of energy seems minimal, antireflection is crucial for a metasurface, not only enhancing efficiency but also reducing background signal of a meta-device.
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36
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Zhang JC, Wu GB, Chen MK, Liu X, Chan KF, Tsai DP, Chan CH. A 6G meta-device for 3D varifocal. SCIENCE ADVANCES 2023; 9:eadf8478. [PMID: 36706183 PMCID: PMC9883050 DOI: 10.1126/sciadv.adf8478] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The sixth-generation (6G) communication technology is being developed in full swing and is expected to be faster and better than the fifth generation. The precise information transfer directivity and the concentration of signal strength are the key topics of 6G technology. We report the synthetic phase design of rotary doublet Airy beam and triplet Gaussian beam varifocal meta-devices to fully control the terahertz beam's propagation direction and coverage area. The focusing spot can be delivered to arbitrary positions in a two-dimensional plane or a three-dimensional space. The highly concentrated signal can be delivered to a specific position, and the transmission direction can be adjusted freely to enable secure, flexible, and high-directivity 6G communication systems. This technology avoids the high costs associated with extensive use of active components. 6G communication systems, wireless power transfer, zoom imaging, and remote sensing will benefit from large-scale adoption of such a technology.
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Affiliation(s)
- Jing Cheng Zhang
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Geng-Bo Wu
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Mu Ku Chen
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Xiaoyuan Liu
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Ka Fai Chan
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Din Ping Tsai
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Corresponding author. (D.P.T.); (C.H.C.)
| | - Chi Hou Chan
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong SAR, China
- Corresponding author. (D.P.T.); (C.H.C.)
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37
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Li T, Kingsley-Smith JJ, Hu Y, Xu X, Yan S, Wang S, Yao B, Wang Z, Zhu S. Reversible lateral optical force on phase-gradient metasurfaces for full control of metavehicles. OPTICS LETTERS 2023; 48:255-258. [PMID: 36638431 DOI: 10.1364/ol.478979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Photonics is currently undergoing an era of miniaturization thanks in part to two-dimensional (2D) optical metasurfaces. Their ability to sculpt and redirect optical momentum can give rise to an optical force, which acts orthogonally to the direction of light propagation. Powered by a single unfocused light beam, these lateral optical forces (LOFs) can be used to drive advanced metavehicles and are controlled via the incident beam's polarization. However, the full control of a metavehicle on a 2D plane (i.e. forward, backward, left, and right) with a sign-switchable LOF remains a challenge. Here we present a phase-gradient metasurface route for achieving such full control while also increasing efficiency. The proposed metasurface is able to deflect a normally incident plane wave in a traverse direction by modulating the plane wave's polarization, and results in a sign-switchable recoil LOF. When applied to a metavehicle, this LOF enables a level of motion control that was previously unobtainable.
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38
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Ultrathin quantum light source with van der Waals NbOCl 2 crystal. Nature 2023; 613:53-59. [PMID: 36600061 DOI: 10.1038/s41586-022-05393-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 09/28/2022] [Indexed: 01/05/2023]
Abstract
Interlayer electronic coupling in two-dimensional materials enables tunable and emergent properties by stacking engineering. However, it also results in significant evolution of electronic structures and attenuation of excitonic effects in two-dimensional semiconductors as exemplified by quickly degrading excitonic photoluminescence and optical nonlinearities in transition metal dichalcogenides when monolayers are stacked into van der Waals structures. Here we report a van der Waals crystal, niobium oxide dichloride (NbOCl2), featuring vanishing interlayer electronic coupling and monolayer-like excitonic behaviour in the bulk form, along with a scalable second-harmonic generation intensity of up to three orders higher than that in monolayer WS2. Notably, the strong second-order nonlinearity enables correlated parametric photon pair generation, through a spontaneous parametric down-conversion (SPDC) process, in flakes as thin as about 46 nm. To our knowledge, this is the first SPDC source unambiguously demonstrated in two-dimensional layered materials, and the thinnest SPDC source ever reported. Our work opens an avenue towards developing van der Waals material-based ultracompact on-chip SPDC sources as well as high-performance photon modulators in both classical and quantum optical technologies1-4.
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39
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Wu X, Zhu J, Lin F, Fang Z, Zhu X. Study of a High-Index Dielectric Non-Hermitian Metasurface and Its Application in Holograms. ACS OMEGA 2022; 7:44743-44749. [PMID: 36530222 PMCID: PMC9753210 DOI: 10.1021/acsomega.2c04448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
We demonstrate that a high-index dielectric Si metasurface with a designed chiral unit structure possesses an exceptional point (EP) when it is described by a non-Hermitian Hamiltonian associated with the transmission matrix. By encircling any path in the parameter space around the EP, topologically protected 2π-phase accumulation occurs. These typical non-Hermitian properties are ascribed to complex scattering phenomena related to the coupling between electric and magnetic dipolar modes from the high-index dielectric Si metasurface. The topologically guaranteed entire 2π-phase accumulation and chiral distinction around the EP open up many promising possibilities in nanophotonic device designing; for instance, phase-only and polarization multiplexing holograms are realized in this work.
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Affiliation(s)
- Xiangrong Wu
- State
Key Lab for Mesoscopic Physics, School of Physics, Peking University, Beijing100871, China
| | - Jiaxi Zhu
- State
Key Lab for Mesoscopic Physics, School of Physics, Peking University, Beijing100871, China
| | - Feng Lin
- State
Key Lab for Mesoscopic Physics, School of Physics, Peking University, Beijing100871, China
| | - Zheyu Fang
- State
Key Lab for Mesoscopic Physics, School of Physics, Peking University, Beijing100871, China
- Center
for Nanoscale Science and Technology, Academy for Advanced Interdisciplinary
Studies, Peking University, Beijing100871, China
- Collaborative
Innovation Center of Quantum Matter, Beijing100871, China
| | - Xing Zhu
- State
Key Lab for Mesoscopic Physics, School of Physics, Peking University, Beijing100871, China
- National
Center for Nanoscience and Technology, Beijing100190, China
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40
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Duan G, Zhang C, Yang D, Wang Z. Theoretical Design of a Bionic Spatial 3D-Arrayed Multifocal Metalens. Biomimetics (Basel) 2022; 7:biomimetics7040200. [PMID: 36412728 PMCID: PMC9680407 DOI: 10.3390/biomimetics7040200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
With the development of micro/nano-optics, metasurfaces are gaining increasing attention working as novel electromagnetic wave control devices. Among which, metalenses have been developed and applied as a typical application of metasurfaces owing to their unique optical properties. However, most of those previous metalenses can only produce one focal point, which severely limits their applications. Inspired by the fly compound eye, we propose a special kind of spatial multifocal metalens. Our metalenses can reverse the polarization state of the incident circularly polarized light, which is then focused. In addition, a horizontally aligned multifocal metalens can be achieved by designing reasonable phase and region distributions, which is similar to a vertically aligned one. Most significantly, a spatially 3D-arrayed multifocal metalens with low crosstalk is well achieved by combining these two distribution methods. The proposed bionic 3D-arrayed multifocal metalens with amazing focusing effect promises applications in imaging, nanoparticle manipulation, optical communication, and other fields.
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Affiliation(s)
- Guihui Duan
- Interdisciplinary Research Center of Low-Carbon Technology and Equipment, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
| | - Ce Zhang
- Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 100094, China
| | | | - Zhaolong Wang
- Interdisciplinary Research Center of Low-Carbon Technology and Equipment, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, Suzhou University of Science and Technology, Suzhou 100094, China
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41
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Abdelraouf OAM, Wang Z, Liu H, Dong Z, Wang Q, Ye M, Wang XR, Wang QJ, Liu H. Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications. ACS NANO 2022; 16:13339-13369. [PMID: 35976219 DOI: 10.1021/acsnano.2c04628] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Metasurfaces, a two-dimensional (2D) form of metamaterials constituted by planar meta-atoms, exhibit exotic abilities to tailor electromagnetic (EM) waves freely. Over the past decade, tremendous efforts have been made to develop various active materials and incorporate them into functional devices for practical applications, pushing the research of tunable metasurfaces to the forefront of nanophotonics. Those active materials include phase change materials (PCMs), semiconductors, transparent conducting oxides (TCOs), ferroelectrics, liquid crystals (LCs), atomically thin material, etc., and enable intriguing performances such as fast switching speed, large modulation depth, ultracompactness, and significant contrast of optical properties under external stimuli. Integration of such materials offers substantial tunability to the conventional passive nanophotonic platforms. Tunable metasurfaces with multifunctionalities triggered by various external stimuli bring in rich degrees of freedom in terms of material choices and device designs to dynamically manipulate and control EM waves on demand. This field has recently flourished with the burgeoning development of physics and design methodologies, particularly those assisted by the emerging machine learning (ML) algorithms. This review outlines recent advances in tunable metasurfaces in terms of the active materials and tuning mechanisms, design methodologies, and practical applications. We conclude this review paper by providing future perspectives in this vibrant and fast-growing research field.
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Affiliation(s)
- Omar A M Abdelraouf
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Ziyu Wang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Hailong Liu
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Zhaogang Dong
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Qian Wang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Ming Ye
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiao Renshaw Wang
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Qi Jie Wang
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Hong Liu
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
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42
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Barbillon G. Latest Advances in Metasurfaces for SERS and SEIRA Sensors as Well as Photocatalysis. Int J Mol Sci 2022; 23:ijms231810592. [PMID: 36142501 PMCID: PMC9506333 DOI: 10.3390/ijms231810592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 09/08/2022] [Accepted: 09/12/2022] [Indexed: 11/27/2022] Open
Abstract
Metasurfaces can enable the confinement of electromagnetic fields on huge surfaces and zones, and they can thus be applied to biochemical sensing by using surface-enhanced Raman scattering (SERS) and surface-enhanced infrared absorption (SEIRA). Indeed, these metasurfaces have been examined for SERS and SEIRA sensing thanks to the presence of a wide density of hotspots and confined optical modes within their structures. Moreover, some metasurfaces allow an accurate enhancement of the excitation and emission processes for the SERS effect by supporting resonances at frequencies of these processes. Finally, the metasurfaces allow the enhancement of the absorption capacity of the solar light and the generation of a great number of catalytic active sites in order to more quickly produce the surface reactions. Here, we outline the latest advances in metasurfaces for SERS and SEIRA sensors as well as photocatalysis.
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Affiliation(s)
- Grégory Barbillon
- EPF-Ecole d'Ingénieurs, 55 Avenue du Président Wilson, 94230 Cachan, France
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43
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Chen Y, Zhao R, He H, Li X, Zhou H, Ullah N, Geng G, Li J, Wang Y, Huang L. Spectrum dispersion element based on the metasurface with parabolic phase. OPTICS EXPRESS 2022; 30:32670-32679. [PMID: 36242323 DOI: 10.1364/oe.469004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/12/2022] [Indexed: 06/16/2023]
Abstract
New kinds of dispersion elements are required for the minimization of the spectrometers. Metasurfaces offer new methods for a novel type of spectrometers due to their ultra-thin property and great ability to manipulate the electromagnetic field. Here, we propose and demonstrate a spectral modulated metasurface as a miniaturized dispersion element that possesses parabolic phase profile. Different wavelengths of the incident light can be dispersed to different spatial positions due to the accumulation of the dynamic phase varies with the wavelengths from metasurface. Detailed theoretical spectrum dispersion ability is analyzed and experimental demonstration is achieved. The polarization conversion efficiency is high, which is promising to be used in practical applications. Such metasurface provides a new and simple way to design dispersion devices and has the potential to be used in spectrometers, variable filters, spectrum tomography, etc.
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44
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Santiago-Cruz T, Gennaro SD, Mitrofanov O, Addamane S, Reno J, Brener I, Chekhova MV. Resonant metasurfaces for generating complex quantum states. Science 2022; 377:991-995. [PMID: 36007052 DOI: 10.1126/science.abq8684] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Quantum state engineering, the cornerstone of quantum photonic technologies, mainly relies on spontaneous parametric downconversion and four-wave mixing, where one or two pump photons spontaneously decay into a photon pair. Both of these nonlinear effects require momentum conservation for the participating photons, which strongly limits the versatility of the resulting quantum states. Nonlinear metasurfaces have subwavelength thickness and allow the relaxation of this constraint; when combined with resonances, they greatly expand the possibilities of quantum state engineering. Here, we generated entangled photons via spontaneous parametric downconversion in semiconductor metasurfaces with high-quality factor, quasi-bound state in the continuum resonances. By enhancing the quantum vacuum field, our metasurfaces boost the emission of nondegenerate entangled photons within multiple narrow resonance bands and over a wide spectral range. A single resonance or several resonances in the same sample, pumped at multiple wavelengths, can generate multifrequency quantum states, including cluster states. These features reveal metasurfaces as versatile sources of complex states for quantum information.
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Affiliation(s)
- Tomás Santiago-Cruz
- Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.,Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Sylvain D Gennaro
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA.,Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Oleg Mitrofanov
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA.,University College London, London WC1E 7JE, UK
| | - Sadhvikas Addamane
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA.,Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - John Reno
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA.,Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Igal Brener
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, USA.,Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Maria V Chekhova
- Max Planck Institute for the Science of Light, 91058 Erlangen, Germany.,Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
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Hu T, Feng X, Yang Z, Zhao M. Design of scalable metalens array for optical addressing. FRONTIERS OF OPTOELECTRONICS 2022; 15:32. [PMID: 36637552 PMCID: PMC9756259 DOI: 10.1007/s12200-022-00035-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 01/25/2022] [Indexed: 06/17/2023]
Abstract
Large-scale trapped-ion quantum computers hold great promise to outperform classical computers and are crucially desirable for finance, pharmaceutical industry, fundamental chemistry and other fields. Currently, a big challenge for trapped-ion quantum computers is the poor scalability mainly brought by the optical elements that are used for optical addressing. Metasurfaces provide a promising solution due to their excellent flexibility and integration ability. Here, we propose and numerically demonstrate a scalable off-axis metalens array for optical addressing working at the wavelength of 350 nm. Metalens arrays designed for x linearly polarized and left circularly polarized light respectively can focus the collimated addressing beam array into a compact focused spot array with spot spacing of 5 μm, featuring crosstalk below 0.82%.
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Affiliation(s)
- Tie Hu
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xing Feng
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhenyu Yang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Ming Zhao
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
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Sultanov V, Santiago-Cruz T, Chekhova MV. Flat-optics generation of broadband photon pairs with tunable polarization entanglement. OPTICS LETTERS 2022; 47:3872-3875. [PMID: 35913336 DOI: 10.1364/ol.458133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
The concept of "flat optics" is quickly conquering different fields of photonics, but its implementation in quantum optics is still in its infancy. In particular, polarization entanglement, strongly required in quantum photonics, is so far not realized on "flat" platforms. Meanwhile, relaxed phase matching of "flat" nonlinear optical sources enables enormous freedom in tailoring their polarization properties. Here we use this freedom to generate photon pairs with tunable polarization entanglement via spontaneous parametric downconversion (SPDC) in a 400-nm GaP film. By changing the pump polarization, we tune the polarization state of photon pairs from maximally entangled to almost disentangled, which is impossible in a single bulk SPDC source. Polarization entanglement, together with the broadband frequency spectrum, results in an ultranarrow (12 fs) Hong-Ou-Mandel effect and promises extensions to hyperentanglement.
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Wang Z, Fang Y, Lin H, Zhao G, Yan W, Ma Z, Li Q, Zhang J. Bucket Effect to Improve Third‐Order Nonlinear Optical Response on Metal‐Heteroaromatic Compounds. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zirui Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
- School of Physical Science and Technology ShanghaiTech University Shanghai 201210 P.R. China
| | - Yu‐Hui Fang
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Huaxing Lin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Guoxiang Zhao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Weiyin Yan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Zuju Ma
- School of Environmental and Materials Engineering Yantai University Yantai 264005 P.R. China
| | - Qiao‐Hong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences 350002 Fuzhou P. R. China
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Zhou J, Wu Q, Zhao J, Posner C, Lei M, Chen G, Zhang J, Liu Z. Fourier Optical Spin Splitting Microscopy. PHYSICAL REVIEW LETTERS 2022; 129:020801. [PMID: 35867452 PMCID: PMC10035159 DOI: 10.1103/physrevlett.129.020801] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
In this Letter, we propose a new quantitative phase imaging methodology named Fourier optical spin splitting microscopy (FOSSM). FOSSM relies on a metasurface located at the Fourier plane of a polarized microscope to separate the object image into two replicas of opposite circularly polarized states. The bias retardation between the two replicas is tuned by translating the metasurface or rotating the analyzer. Combined with a polarized camera, FOSSM can easily achieve single-shot quantitative phase gradient imaging, which greatly reduces the complexity of current phase microscope setups, paving the way for the next generation high-speed real-time multifunctional microscopy.
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Affiliation(s)
- Junxiao Zhou
- Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Qianyi Wu
- Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Junxiang Zhao
- Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Clara Posner
- Department of Pharmacology, University of California, San Diego, La Jolla, California 92093, United States
| | - Ming Lei
- Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Guanghao Chen
- Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Jin Zhang
- Department of Pharmacology, University of California, San Diego, La Jolla, California 92093, United States
| | - Zhaowei Liu
- Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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Ullah N, Zhao R, Huang L. Recent Advancement in Optical Metasurface: Fundament to Application. MICROMACHINES 2022; 13:1025. [PMID: 35888842 PMCID: PMC9322754 DOI: 10.3390/mi13071025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 12/01/2022]
Abstract
Metasurfaces have gained growing interest in recent years due to their simplicity in manufacturing and lower insertion losses. Meanwhile, they can provide unprecedented control over the spatial distribution of transmitted and reflected optical fields in a compact form. The metasurfaces are a kind of planar array of resonant subwavelength components that, depending on the intended optical wavefronts to be sculpted, can be strictly periodic or quasi-periodic, or even aperiodic. For instance, gradient metasurfaces, a subtype of metasurfaces, are designed to exhibit spatially changing optical responses, which result in spatially varying amplitudes of scattered fields and the associated polarization of these fields. This paper starts off by presenting concepts of anomalous reflection and refraction, followed by a brief discussion on the Pancharatanm-Berry Phase (PB) and Huygens' metasurfaces. As an introduction to wavefront manipulation, we next present their key applications. These include planar metalens, cascaded meta-systems, tunable metasurfaces, spectrometer retroreflectors, vortex beams, and holography. The review concludes with a summary, preceded by a perspective outlining our expectations for potential future research work and applications.
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Affiliation(s)
- Naqeeb Ullah
- Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China; (N.U.); (R.Z.)
- Department of Electronic Engineering, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta 87300, Pakistan
| | - Ruizhe Zhao
- Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China; (N.U.); (R.Z.)
| | - Lingling Huang
- Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China; (N.U.); (R.Z.)
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Abstract
Recent years have witnessed promising artificial intelligence (AI) applications in many disciplines, including optics, engineering, medicine, economics, and education. In particular, the synergy of AI and meta-optics has greatly benefited both fields. Meta-optics are advanced flat optics with novel functions and light-manipulation abilities. The optical properties can be engineered with a unique design to meet various optical demands. This review offers comprehensive coverage of meta-optics and artificial intelligence in synergy. After providing an overview of AI and meta-optics, we categorize and discuss the recent developments integrated by these two topics, namely AI for meta-optics and meta-optics for AI. The former describes how to apply AI to the research of meta-optics for design, simulation, optical information analysis, and application. The latter reports the development of the optical Al system and computation via meta-optics. This review will also provide an in-depth discussion of the challenges of this interdisciplinary field and indicate future directions. We expect that this review will inspire researchers in these fields and benefit the next generation of intelligent optical device design.
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Affiliation(s)
- Mu Ku Chen
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077.,Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong 999077.,The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong 999077
| | - Xiaoyuan Liu
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077
| | - Yanni Sun
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077
| | - Din Ping Tsai
- Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077.,Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong 999077.,The State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon, Hong Kong 999077
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