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Hu QC, Xu J, Luo QY, Hu HB, Guo PJ, Liu CY, Zhao S, Zhou Y, Wang JF. Enhancement of silicon vacancy fluorescence intensity in silicon carbide using a dielectric cavity. OPTICS LETTERS 2024; 49:2966-2969. [PMID: 38824304 DOI: 10.1364/ol.522770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/29/2024] [Indexed: 06/03/2024]
Abstract
Over the past decades, spin qubits in silicon carbide (SiC) have emerged as promising platforms for a wide range of quantum technologies. The fluorescence intensity holds significant importance in the performance of quantum photonics, quantum information process, and sensitivity of quantum sensing. In this work, a dual-layer Au/SiO2 dielectric cavity is employed to enhance the fluorescence intensity of a shallow silicon vacancy ensemble in 4H-SiC. Experimental results demonstrate an effective fourfold augmentation in fluorescence counts at saturating laser power, corroborating our theoretical predictions. Based on this, we further investigate the influence of dielectric cavities on the contrast and linewidth of optically detected magnetic resonance (ODMR). There is a 1.6-fold improvement in magnetic field sensitivity. In spin echo experiments, coherence times remain constant regardless of the thickness of dielectric cavities. These experiments pave the way for broader applications of dielectric cavities in SiC-based quantum technologies.
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Harrington B, Ye Z, Signor L, Pickel AD. Luminescence Thermometry Beyond the Biological Realm. ACS NANOSCIENCE AU 2024; 4:30-61. [PMID: 38406316 PMCID: PMC10885336 DOI: 10.1021/acsnanoscienceau.3c00051] [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: 09/27/2023] [Revised: 11/09/2023] [Accepted: 11/13/2023] [Indexed: 02/27/2024]
Abstract
As the field of luminescence thermometry has matured, practical applications of luminescence thermometry techniques have grown in both frequency and scope. Due to the biocompatibility of most luminescent thermometers, many of these applications fall within the realm of biology. However, luminescence thermometry is increasingly employed beyond the biological realm, with expanding applications in areas such as thermal characterization of microelectronics, catalysis, and plasmonics. Here, we review the motivations, methodologies, and advances linked to nonbiological applications of luminescence thermometry. We begin with a brief overview of luminescence thermometry probes and techniques, focusing on those most commonly used for nonbiological applications. We then address measurement capabilities that are particularly relevant for these applications and provide a detailed survey of results across various application categories. Throughout the review, we highlight measurement challenges and requirements that are distinct from those of biological applications. Finally, we discuss emerging areas and future directions that present opportunities for continued research.
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Affiliation(s)
- Benjamin Harrington
- Materials
Science Program, University of Rochester, Rochester, New York 14627, United States
| | - Ziyang Ye
- Materials
Science Program, University of Rochester, Rochester, New York 14627, United States
| | - Laura Signor
- The
Institute of Optics, University of Rochester, Rochester, New York 14627, United States
| | - Andrea D. Pickel
- Department
of Mechanical Engineering and Materials Science Program, University of Rochester, Rochester, New York 14627, United States
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3
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Castelletto S, Lew CTK, Lin WX, Xu JS. Quantum systems in silicon carbide for sensing applications. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2023; 87:014501. [PMID: 38029424 DOI: 10.1088/1361-6633/ad10b3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/29/2023] [Indexed: 12/01/2023]
Abstract
This paper summarizes recent studies identifying key qubit systems in silicon carbide (SiC) for quantum sensing of magnetic, electric fields, and temperature at the nano and microscale. The properties of colour centres in SiC, that can be used for quantum sensing, are reviewed with a focus on paramagnetic colour centres and their spin Hamiltonians describing Zeeman splitting, Stark effect, and hyperfine interactions. These properties are then mapped onto various methods for their initialization, control, and read-out. We then summarised methods used for a spin and charge state control in various colour centres in SiC. These properties and methods are then described in the context of quantum sensing applications in magnetometry, thermometry, and electrometry. Current state-of-the art sensitivities are compiled and approaches to enhance the sensitivity are proposed. The large variety of methods for control and read-out, combined with the ability to scale this material in integrated photonics chips operating in harsh environments, places SiC at the forefront of future quantum sensing technology based on semiconductors.
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Affiliation(s)
- S Castelletto
- School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - C T-K Lew
- School of Physics, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Wu-Xi Lin
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230088, People's Republic of China
| | - Jin-Shi Xu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230088, People's Republic of China
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4
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Luo QY, Zhao S, Hu QC, Quan WK, Zhu ZQ, Li JJ, Wang JF. High-sensitivity silicon carbide divacancy-based temperature sensing. NANOSCALE 2023; 15:8432-8436. [PMID: 37093058 DOI: 10.1039/d3nr00430a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Color centers in silicon carbide have become potentially versatile quantum sensors. Particularly, wide temperature-range temperature sensing has been realized in recent years. However, the sensitivity is limited due to the short dephasing time of the color centers. In this work, we developed a high-sensitivity silicon carbide divacancy-based thermometer using the thermal Carr-Purcell-Meiboom-Gill (TCPMG) method. First, the zero-field splitting D of the PL6 divacancy as a function of temperature was measured with a linear slope of -99.7 kHz K-1. The coherence times of TCPMG pulses linearly increased with the pulse number and the longest coherence time was about 21 μs, which was ten times higher than . The corresponding temperature-sensing sensitivity was 13.4 mK Hz-1/2, which was about 15 times higher than previous results. Finally, we monitored the laboratory temperature variations for 24 hours using the TCMPG pulse. The experiments pave the way for the application of silicon carbide-based high-sensitivity thermometers in the semiconductor industry, biology, and materials sciences.
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Affiliation(s)
- Qin-Yue Luo
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Shuang Zhao
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Qi-Cheng Hu
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Wei-Ke Quan
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Zi-Qi Zhu
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Jia-Jun Li
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Jun-Feng Wang
- College of Physics, Sichuan University, Chengdu 610065, People's Republic of China.
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5
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Wang JF, Liu L, Liu XD, Li Q, Cui JM, Zhou DF, Zhou JY, Wei Y, Xu HA, Xu W, Lin WX, Yan JW, He ZX, Liu ZH, Hao ZH, Li HO, Liu W, Xu JS, Gregoryanz E, Li CF, Guo GC. Magnetic detection under high pressures using designed silicon vacancy centres in silicon carbide. NATURE MATERIALS 2023; 22:489-494. [PMID: 36959503 DOI: 10.1038/s41563-023-01477-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 01/12/2023] [Indexed: 06/18/2023]
Abstract
Pressure-induced magnetic phase transitions are attracting interest as a means to detect superconducting behaviour at high pressures in diamond anvil cells, but determining the local magnetic properties of samples is a challenge due to the small volumes of sample chambers. Optically detected magnetic resonance of nitrogen vacancy centres in diamond has recently been used for the in situ detection of pressure-induced phase transitions. However, owing to their four orientation axes and temperature-dependent zero-field splitting, interpreting these optically detected magnetic resonance spectra remains challenging. Here we study the optical and spin properties of implanted silicon vacancy defects in 4H-silicon carbide that exhibit single-axis and temperature-independent zero-field splitting. Using this technique, we observe the magnetic phase transition of Nd2Fe14B at about 7 GPa and map the critical temperature-pressure phase diagram of the superconductor YBa2Cu3O6.6. These results highlight the potential of silicon vacancy-based quantum sensors for in situ magnetic detection at high pressures.
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Affiliation(s)
- Jun-Feng Wang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- College of Physics, Sichuan University, Chengdu, China
| | - Lin Liu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Xiao-Di Liu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China.
| | - Qiang Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Jin-Ming Cui
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Di-Fan Zhou
- Physics Department, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai, China
| | - Ji-Yang Zhou
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Yu Wei
- Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, China
| | - Hai-An Xu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Wan Xu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Wu-Xi Lin
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Jin-Wei Yan
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Zhen-Xuan He
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zheng-Hao Liu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zhi-He Hao
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Hai-Ou Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Wen Liu
- Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, China
| | - Jin-Shi Xu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Eugene Gregoryanz
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China.
- Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK.
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, China.
| | - Chuan-Feng Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Guang-Can Guo
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
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6
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Quan WK, Liu L, Luo QY, Liu XD, Wang JF. Fiber-integrated silicon carbide silicon-vacancy-based magnetometer. OPTICS LETTERS 2023; 48:1423-1426. [PMID: 36946943 DOI: 10.1364/ol.476305] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Silicon vacancies in silicon carbide have drawn much attention for various types of quantum sensing. However, most previous experiments are realized using confocal scanning systems, which limits their practical applications. In this work, we demonstrate a compact fiber-integrated silicon carbide silicon-vacancy-based magnetometer at room temperature. First, we effectively couple the silicon vacancy in a tiny silicon carbide slice with an optical fiber tip and realize the readout of the spin signal through the fiber at the same time. We then study the optically detected magnetic resonance spectra at different laser and microwave powers, obtaining an optimized magnetic field sensitivity of 12.3 μT/Hz 12. Based on this, the magnetometer is used to measure the strength and polar angle of an external magnetic field. Through these experiments, we have paved the way for fiber-integrated silicon-vacancy-based magnetometer applications in practical environments, such as geophysics and biomedical sensing.
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7
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Liu GQ, Liu RB, Li Q. Nanothermometry with Enhanced Sensitivity and Enlarged Working Range Using Diamond Sensors. Acc Chem Res 2023; 56:95-105. [PMID: 36594628 DOI: 10.1021/acs.accounts.2c00576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nanothermometry is increasingly demanded in frontier research in physics, chemistry, materials science and engineering, and biomedicine. An ideal thermometer should have features of reliable temperature interpretation, high sensitivity, fast response, minimum disturbance of the target's temperature, applicability in a variety of environments, and a large working temperature range. For applications in nanosystems, high spatial resolution is also desirable. Such requirements impose great challenges in nanothermometry since the shrinking of the sensor volume usually leads to a reduction in sensitivity.Diamond with nitrogen-vacancy (NV) centers provides opportunities for nanothermometry. NV center spins have sharp resonances due to their superb coherence. NV centers are multimodal sensors. They can directly sense magnetic fields, electric fields, temperature, pressure, and nuclear spins and, through proper transduction, measure other quantities such as the pH and deformation. In particular, their spin resonance frequencies vary with temperature, making them a promising thermometer. The high thermal conductivity, high hardness, chemical stability, and biocompatibility of diamond enable reliable and fast temperature sensing in complex environments ranging from erosive liquids to live systems. Chemical processing of diamond surfaces allows various functionalities such as targeting. The small size and the targeting capability of nanodiamonds then enable site-specific temperature sensing with nanoscale spatial resolution. However, the sensitivity of NV-based nanothermometry is yet to meet the requirement of practical systems with a large gap of a few orders of magnitude. On the other hand, although NV-based quantum sensing works well from 0.3 to 600 K, extending the sensing scheme to high temperature remains challenging due to uncertainty in identifying the exact physical limits and possible solution at elevated temperatures.This Account focuses on our efforts to enhance the temperature sensitivity and widen the working temperature range of diamond-based nanothermometry. We start with explaining the working principle and features of NV-based thermometry with examples of applications. Then a transducer-based concept is introduced with practical schemes to improve the sensitivity of the nanodiamond thermometer. Specifically, we show that the temperature signal can be transduced and amplified by adopting hybrid structures of nanodiamond and magnetic nanoparticles, which results in a record temperature sensitivity of 76 μK/√Hz. We also demonstrate quantum sensing with NV at high temperatures of up to 1000 K by adopting a pulsed heating-cooling scheme to carry out the spin polarization and readout at room temperature and the spin manipulation (sensing) at high temperatures. Finally, unsolved problems and future endeavors of diamond nanothermometry are discussed.
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Affiliation(s)
- Gang-Qin Liu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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8
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Khramtsov IA, Fedyanin DY. Bright Silicon Carbide Single-Photon Emitting Diodes at Low Temperatures: Toward Quantum Photonics Applications. NANOMATERIALS 2021; 11:nano11123177. [PMID: 34947525 PMCID: PMC8705877 DOI: 10.3390/nano11123177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 11/29/2022]
Abstract
Color centers in silicon carbide have recently emerged as one of the most promising emitters for bright single-photon emitting diodes (SPEDs). It has been shown that, at room temperature, they can emit more than 109 photons per second under electrical excitation. However, the spectral emission properties of color centers in SiC at room temperature are far from ideal. The spectral properties could be significantly improved by decreasing the operating temperature. However, the densities of free charge carriers in SiC rapidly decrease as temperature decreases, which reduces the efficiency of electrical excitation of color centers by many orders of magnitude. Here, we study for the first time the temperature characteristics of SPEDs based on color centers in 4H-SiC. Using a rigorous numerical approach, we demonstrate that although the single-photon electroluminescence rate does rapidly decrease as temperature decreases, it is possible to increase the SPED brightness to 107 photons/s at 100 K using the recently predicted effect of hole superinjection in homojunction p-i-n diodes. This gives the possibility to achieve high brightness and good spectral properties at the same time, which paves the way toward novel quantum photonics applications of electrically driven color centers in silicon carbide.
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9
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Hernández-Mínguez A, Poshakinskiy AV, Hollenbach M, Santos PV, Astakhov GV. Acoustically induced coherent spin trapping. SCIENCE ADVANCES 2021; 7:eabj5030. [PMID: 34714672 PMCID: PMC8555898 DOI: 10.1126/sciadv.abj5030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
Spin centers are promising qubits for quantum technologies. Here, we show that the acoustic manipulation of spin qubits in their electronic excited state provides an approach for coherent spin control inaccessible so far. We demonstrate a giant interaction between the strain field of a surface acoustic wave (SAW) and the excited-state spin of silicon vacancies in silicon carbide, which is about two orders of magnitude stronger than in the ground state. The simultaneous spin driving in the ground and excited states with the same SAW leads to the trapping of the spin along a direction given by the frequency detuning from the corresponding spin resonances. The coherence of the spin-trapped states becomes only limited by relaxation processes intrinsic to the ground state. The coherent acoustic manipulation of spins in the ground and excited state provides new opportunities for efficient on-chip quantum information protocols and coherent sensing.
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Affiliation(s)
- Alberto Hernández-Mínguez
- Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e.V., Hausvogteiplatz 5-7, 10117 Berlin, Germany
| | | | - Michael Hollenbach
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Paulo V. Santos
- Paul-Drude-Institut für Festkörperelektronik, Leibniz-Institut im Forschungsverbund Berlin e.V., Hausvogteiplatz 5-7, 10117 Berlin, Germany
| | - Georgy V. Astakhov
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
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10
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Fujiwara M, Shikano Y. Diamond quantum thermometry: from foundations to applications. NANOTECHNOLOGY 2021; 32:482002. [PMID: 34416739 DOI: 10.1088/1361-6528/ac1fb1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Diamond quantum thermometry exploits the optical and electrical spin properties of colour defect centres in diamonds and, acts as a quantum sensing method exhibiting ultrahigh precision and robustness. Compared to the existing luminescent nanothermometry techniques, a diamond quantum thermometer can be operated over a wide temperature range and a sensor spatial scale ranging from nanometres to micrometres. Further, diamond quantum thermometry is employed in several applications, including electronics and biology, to explore these fields with nanoscale temperature measurements. This review covers the operational principles of diamond quantum thermometry for spin-based and all-optical methods, material development of diamonds with a focus on thermometry, and examples of applications in electrical and biological systems with demand-based technological requirements.
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Affiliation(s)
- Masazumi Fujiwara
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Yutaka Shikano
- Graduate School of Science and Technology, Gunma University, 4-2 Aramaki, Maebashi, Gunma 371-8510, Japan
- Quantum Computing Center, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama 223-8522, Japan
- Institute for Quantum Studies, Chapman University, 1 University Dr, Orange, CA 92866, United States of America
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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11
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Robust coherent control of solid-state spin qubits using anti-Stokes excitation. Nat Commun 2021; 12:3223. [PMID: 34050146 PMCID: PMC8163787 DOI: 10.1038/s41467-021-23471-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 04/30/2021] [Indexed: 11/08/2022] Open
Abstract
Optically addressable solid-state color center spin qubits have become important platforms for quantum information processing, quantum networks and quantum sensing. The readout of color center spin states with optically detected magnetic resonance (ODMR) technology is traditionally based on Stokes excitation, where the energy of the exciting laser is higher than that of the emission photons. Here, we investigate an unconventional approach using anti-Stokes excitation to detect the ODMR signal of silicon vacancy defect spin in silicon carbide, where the exciting laser has lower energy than the emitted photons. Laser power, microwave power and temperature dependence of the anti-Stokes excited ODMR are systematically studied, in which the behavior of ODMR contrast and linewidth is shown to be similar to that of Stokes excitation. However, the ODMR contrast is several times that of the Stokes excitation. Coherent control of silicon vacancy spin under anti-Stokes excitation is then realized at room temperature. The spin coherence properties are the same as those of Stokes excitation, but with a signal contrast that is around three times greater. To illustrate the enhanced spin readout contrast under anti-Stokes excitation, we also provide a theoretical model. The experiments demonstrate that the current anti-Stokes excitation ODMR approach has promising applications in quantum information processing and quantum sensing. Optically detected magnetic resonance of defect spins typically relies on Stokes excitation, in which the excitation energy is larger than that of the emitted photon. Here, the authors use the opposite regime of anti-Stokes excitation to detect Si vacancy spins in SiC, with a threefold improvement in signal contrast.
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12
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Liu J, Xu Z, Song Y, Wang H, Dong B, Li S, Ren J, Li Q, Rommel M, Gu X, Liu B, Hu M, Fang F. Confocal photoluminescence characterization of silicon-vacancy color centers in 4H-SiC fabricated by a femtosecond laser. NANOTECHNOLOGY AND PRECISION ENGINEERING 2020. [DOI: 10.1016/j.npe.2020.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Jiayu Liu
- State Key Laboratory of Precision Measuring Technology & Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, Tianjin 300072, China
| | - Zongwei Xu
- State Key Laboratory of Precision Measuring Technology & Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, Tianjin 300072, China
| | - Ying Song
- State Key Laboratory of Precision Measuring Technology & Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, Tianjin 300072, China
| | - Hong Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin
300387, China
| | - Bing Dong
- State Key Laboratory of Precision Measuring Technology & Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, Tianjin 300072, China
| | - Shaobei Li
- Tianjin Kaiprin Optoelectronic Technology Co., Ltd., Tianjin 300300, China
| | - Jia Ren
- Tianjin Kaiprin Optoelectronic Technology Co., Ltd., Tianjin 300300, China
| | - Qiang Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026,
China
| | - Mathias Rommel
- Fraunhofer Institute for Integrated Systems and Device Technology (IISB), Schottkystrasse 10,
Erlangen 91058, Germany
| | - Xinhua Gu
- Tianjin Kaiprin Optoelectronic Technology Co., Ltd., Tianjin 300300, China
| | - Bowen Liu
- Ultrafast Laser Lab, Tianjin University, Tianjin 300072, China
| | - Minglie Hu
- Ultrafast Laser Lab, Tianjin University, Tianjin 300072, China
| | - Fengzhou Fang
- State Key Laboratory of Precision Measuring Technology & Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, Tianjin 300072, China
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13
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Coherent electrical readout of defect spins in silicon carbide by photo-ionization at ambient conditions. Nat Commun 2019; 10:5569. [PMID: 31804489 PMCID: PMC6895084 DOI: 10.1038/s41467-019-13545-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 11/13/2019] [Indexed: 12/04/2022] Open
Abstract
Quantum technology relies on proper hardware, enabling coherent quantum state control as well as efficient quantum state readout. In this regard, wide-bandgap semiconductors are an emerging material platform with scalable wafer fabrication methods, hosting several promising spin-active point defects. Conventional readout protocols for defect spins rely on fluorescence detection and are limited by a low photon collection efficiency. Here, we demonstrate a photo-electrical detection technique for electron spins of silicon vacancy ensembles in the 4H polytype of silicon carbide (SiC). Further, we show coherent spin state control, proving that this electrical readout technique enables detection of coherent spin motion. Our readout works at ambient conditions, while other electrical readout approaches are often limited to low temperatures or high magnetic fields. Considering the excellent maturity of SiC electronics with the outstanding coherence properties of SiC defects, the approach presented here holds promises for scalability of future SiC quantum devices. The efficiency of quantum state readout is one of the factors that determine the performance of point defects in semiconductors in practical applications. Here the authors demonstrate photo-electrical readout for silicon vacancies in silicon carbide, providing an alternative to optical detection.
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14
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Widmann M, Niethammer M, Fedyanin DY, Khramtsov IA, Rendler T, Booker ID, Ul Hassan J, Morioka N, Chen YC, Ivanov IG, Son NT, Ohshima T, Bockstedte M, Gali A, Bonato C, Lee SY, Wrachtrup J. Electrical Charge State Manipulation of Single Silicon Vacancies in a Silicon Carbide Quantum Optoelectronic Device. NANO LETTERS 2019; 19:7173-7180. [PMID: 31532999 DOI: 10.1021/acs.nanolett.9b02774] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Color centers with long-lived spins are established platforms for quantum sensing and quantum information applications. Color centers exist in different charge states, each of them with distinct optical and spin properties. Application to quantum technology requires the capability to access and stabilize charge states for each specific task. Here, we investigate charge state manipulation of individual silicon vacancies in silicon carbide, a system which has recently shown a unique combination of long spin coherence time and ultrastable spin-selective optical transitions. In particular, we demonstrate charge state switching through the bias applied to the color center in an integrated silicon carbide optoelectronic device. We show that the electronic environment defined by the doping profile and the distribution of other defects in the device plays a key role for charge state control. Our experimental results and numerical modeling evidence that control of these complex interactions can, under certain conditions, enhance the photon emission rate. These findings open the way for deterministic control over the charge state of spin-active color centers for quantum technology and provide novel techniques for monitoring doping profiles and voltage sensing in microscopic devices.
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Affiliation(s)
- Matthias Widmann
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
| | - Matthias Niethammer
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
| | - Dmitry Yu Fedyanin
- Laboratory of Nanooptics and Plasmonics , Moscow Institute of Physics and Technology , 9 Institutsky Lane , 141700 Dolgoprudny , Russian Federation
| | - Igor A Khramtsov
- Laboratory of Nanooptics and Plasmonics , Moscow Institute of Physics and Technology , 9 Institutsky Lane , 141700 Dolgoprudny , Russian Federation
| | - Torsten Rendler
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
| | - Ian D Booker
- Department of Physics, Chemistry and Biology , Linköping University , SE-58183 Linköping , Sweden
| | - Jawad Ul Hassan
- Department of Physics, Chemistry and Biology , Linköping University , SE-58183 Linköping , Sweden
| | - Naoya Morioka
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
| | - Yu-Chen Chen
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
| | - Ivan G Ivanov
- Department of Physics, Chemistry and Biology , Linköping University , SE-58183 Linköping , Sweden
| | - Nguyen Tien Son
- Department of Physics, Chemistry and Biology , Linköping University , SE-58183 Linköping , Sweden
| | - Takeshi Ohshima
- National Institutes for Quantum and Radiological Science and Technology , Takasaki , Gunma 370-1292 , Japan
| | - Michel Bockstedte
- Department Chemistry and Physics of Materials , University of Salzburg , Jakob-Haringer-Strasse 2a , 5020 Salzburg , Austria
- Solid State Theory , University of Erlangen-Nuremberg , Staudstrasse 7B2 , 91058 Erlangen , Germany
| | - Adam Gali
- Wigner Research Centre for Physics , Hungarian Academy of Sciences , P.O. Box 49, H-1525 Budapest , Hungary
- Department of Atomic Physics , Budapest University of Technology and Economics , Budafoki út 8. , H-1111 Budapest , Hungary
| | - Cristian Bonato
- Institute of Photonics and Quantum Sciences, SUPA , Heriot-Watt University , Edinburgh EH14 4AS , United Kingdom
| | - Sang-Yun Lee
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
- Center for Quantum Information , Korea Institute of Science and Technology , Seoul , 02792 , Republic of Korea
| | - Jörg Wrachtrup
- 3. Physikalisches Institut and Research Center SCOPE and Integrated Quantum Science and Technology (IQST) , University of Stuttgart , Pfaffenwaldring 57 , 70569 Stuttgart , Germany
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15
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An efficient Terahertz rectifier on the graphene/SiC materials platform. Sci Rep 2019; 9:11205. [PMID: 31371741 PMCID: PMC6671971 DOI: 10.1038/s41598-019-47606-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 07/19/2019] [Indexed: 11/08/2022] Open
Abstract
We present an efficient Schottky-diode detection scheme for Terahertz (THz) radiation, implemented on the material system epitaxial graphene on silicon carbide (SiC). It employs SiC as semiconductor and graphene as metal, with an epitaxially defined interface. For first prototypes, we report on broadband operation up to 580 GHz, limited only by the RC circuitry, with a responsivity of 1.1 A/W. Remarkably, the voltage dependence of the THz responsivity displays no deviations from DC responsivity, which encourages using this transparent device for exploring the high frequency limits of Schottky rectification in the optical regime. The performance of the detector is demonstrated by resolving sharp spectroscopic features of ethanol and acetone in a THz transmission experiment.
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16
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Chen YC, Salter PS, Niethammer M, Widmann M, Kaiser F, Nagy R, Morioka N, Babin C, Erlekampf J, Berwian P, Booth MJ, Wrachtrup J. Laser Writing of Scalable Single Color Centers in Silicon Carbide. NANO LETTERS 2019; 19:2377-2383. [PMID: 30882227 DOI: 10.1021/acs.nanolett.8b05070] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Single photon emitters in silicon carbide (SiC) are attracting attention as quantum photonic systems ( Awschalom et al. Nat. Photonics 2018 , 12 , 516 - 527 ; Atatüre et al. Nat. Rev. Mater. 2018 , 3 , 38 - 51 ). However, to achieve scalable devices, it is essential to generate single photon emitters at desired locations on demand. Here we report the controlled creation of single silicon vacancy (VSi) centers in 4H-SiC using laser writing without any postannealing process. Due to the aberration correction in the writing apparatus and the nonannealing process, we generate single VSi centers with yields up to 30%, located within about 80 nm of the desired position in the transverse plane. We also investigated the photophysics of the laser writing VSi centers and concluded that there are about 16 photons involved in the laser writing VSi center process. Our results represent a powerful tool in the fabrication of single VSi centers in SiC for quantum technologies and provide further insights into laser writing defects in dielectric materials.
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Affiliation(s)
- Yu-Chen Chen
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | - Patrick S Salter
- Department of Engineering Science , University of Oxford , Parks Road , Oxford OX1 3PJ , United Kingdom
| | - Matthias Niethammer
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | - Matthias Widmann
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | - Florian Kaiser
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | - Roland Nagy
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | - Naoya Morioka
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | - Charles Babin
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
| | | | | | - Martin J Booth
- Department of Engineering Science , University of Oxford , Parks Road , Oxford OX1 3PJ , United Kingdom
| | - Jörg Wrachtrup
- Third Institute of Physics , University of Stuttgart and Institute for Quantum Science and Technology IQST , Stuttgart 70569 , Germany
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17
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Kraus H, Simin D, Kasper C, Suda Y, Kawabata S, Kada W, Honda T, Hijikata Y, Ohshima T, Dyakonov V, Astakhov GV. Three-Dimensional Proton Beam Writing of Optically Active Coherent Vacancy Spins in Silicon Carbide. NANO LETTERS 2017; 17:2865-2870. [PMID: 28350468 DOI: 10.1021/acs.nanolett.6b05395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Constructing quantum devices comprises various challenging tasks, especially when concerning their nanoscale geometry. For quantum color centers, the traditional approach is to fabricate the device structure after the nondeterministic placement of the centers. Reversing this approach, we present the controlled generation of quantum centers in silicon carbide (SiC) by focused proton beam in a noncomplex manner without need for pre- or postirradiation treatment. The generation depth and resolution can be predicted by matching the proton energy to the material's stopping power, and the amount of quantum centers at one specific sample volume is tunable from ensembles of millions to discernible single photon emitters. We identify the generated centers as silicon vacancies through their characteristic magnetic resonance signatures and demonstrate that they possess a long spin-echo coherence time of 42 ± 20 μs at room temperature. Our approach hence enables the fabrication of quantum hybrid nanodevices based on SiC platform, where spin centers are integrated into p-i-n diodes, photonic cavities, and mechanical resonators.
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Affiliation(s)
- H Kraus
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
- National Institutes for Quantum and Radiological Science and Technology (QST) , Takasaki, Gunma 370-1292, Japan
| | - D Simin
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
| | - C Kasper
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
| | - Y Suda
- Faculty of Science and Technology, Gunma University , Kiryu, Gunma 376-8515, Japan
| | - S Kawabata
- Faculty of Science and Technology, Gunma University , Kiryu, Gunma 376-8515, Japan
| | - W Kada
- Faculty of Science and Technology, Gunma University , Kiryu, Gunma 376-8515, Japan
| | - T Honda
- National Institutes for Quantum and Radiological Science and Technology (QST) , Takasaki, Gunma 370-1292, Japan
- Graduate School of Science and Engineering, Saitama University , Saitama 338-8570, Japan
| | - Y Hijikata
- Graduate School of Science and Engineering, Saitama University , Saitama 338-8570, Japan
| | - T Ohshima
- National Institutes for Quantum and Radiological Science and Technology (QST) , Takasaki, Gunma 370-1292, Japan
| | - V Dyakonov
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
- Bavarian Center for Applied Energy Research (ZAE Bayern) , 97074 Würzburg, Germany
| | - G V Astakhov
- Experimental Physics VI, Julius Maximilian University of Würzburg , 97074 Würzburg, Germany
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18
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Castelletto S, Almutairi AFM, Thalassinos G, Lohrmann A, Buividas R, Lau DWM, Reineck P, Juodkazis S, Ohshima T, Gibson BC, Johnson BC. Fluorescent color centers in laser ablated 4H-SiC nanoparticles. OPTICS LETTERS 2017; 42:1297-1300. [PMID: 28362753 DOI: 10.1364/ol.42.001297] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanostructured and bulk silicon carbide (SiC) has recently emerged as a novel platform for quantum nanophotonics due to its harboring of paramagnetic color centers, having immediate applications as a single photon source and spin optical probes. Here, using ultra-short pulsed laser ablation, we fabricated from electron irradiated bulk 4H-SiC, 40-50 nm diameter SiC nanoparticles, fluorescent at 850-950 nm. This photoluminescence is attributed to the silicon vacancy color centers. We demonstrate that the original silicon vacancy color centers from the target sample were retained in the final nanoparticles solution, exhibiting excellent colloidal stability in water over several months. Our work is relevant for quantum nanophotonics, magnetic sensing, and biomedical imaging applications.
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19
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Lohrmann A, Johnson BC, McCallum JC, Castelletto S. A review on single photon sources in silicon carbide. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2017; 80:034502. [PMID: 28139468 DOI: 10.1088/1361-6633/aa5171] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper summarizes key findings in single-photon generation from deep level defects in silicon carbide (SiC) and highlights the significance of these individually addressable centers for emerging quantum applications. Single photon emission from various defect centers in both bulk and nanostructured SiC are discussed as well as their formation and possible integration into optical and electrical devices. The related measurement protocols, the building blocks of quantum communication and computation network architectures in solid state systems, are also summarized. This includes experimental methodologies developed for spin control of different paramagnetic defects, including the measurement of spin coherence times. Well established doping, and micro- and nanofabrication procedures for SiC may allow the quantum properties of paramagnetic defects to be electrically and mechanically controlled efficiently. The integration of single defects into SiC devices is crucial for applications in quantum technologies and we will review progress in this direction.
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Affiliation(s)
- A Lohrmann
- School of Physics, The University of Melbourne, Victoria 3010, Australia
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20
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Yan L, Hong C, Sun B, Zhao G, Cheng Y, Dong S, Zhang D, Zhang X. In Situ Growth of Core-Sheath Heterostructural SiC Nanowire Arrays on Carbon Fibers and Enhanced Electromagnetic Wave Absorption Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6320-6331. [PMID: 28120608 DOI: 10.1021/acsami.6b15795] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Large-scale core-sheath heterostructural SiC nanowires were facilely grown on the surface of carbon fibers using a one-step chemical vapor infiltration process. The as-synthesized SiC nanowires consist of single crystalline SiC cores with a diameter of ∼30 nm and polycrystalline SiC sheaths with an average thickness of ∼60 nm. The formation mechanisms of core-sheath heterostructural SiC nanowires (SiCnws) were discussed in detail. The SiCnws-CF shows strong electromagnetic (EM) wave absorption performance with a maximum reflection loss value of -45.98 dB at 4.4 GHz. Moreover, being coated with conductive polymer polypyrrole (PPy) by a simple chemical polymerization method, the SiCnws-CF/PPy nanocomposites exhibited superior EM absorption abilities with maximum RL value of -50.19 dB at 14.2 GHz and the effective bandwidth of 6.2 GHz. The SiCnws-CF/PPy nanocomposites in this study are very promising as absorber materials with strong electromagnetic wave absorption performance.
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Affiliation(s)
- Liwen Yan
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Changqing Hong
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Boqian Sun
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Guangdong Zhao
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Yehong Cheng
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Shun Dong
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Dongyang Zhang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
| | - Xinghong Zhang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China
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