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Karl P, Mennle S, Ubl M, Flad P, Yang JW, Peng TY, Lu YJ, Giessen H. Niobium nitride plasmonic perfect absorbers for tunable infrared superconducting nanowire photodetection. OPTICS EXPRESS 2021; 29:17087-17096. [PMID: 34154259 DOI: 10.1364/oe.424148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/22/2021] [Indexed: 06/13/2023]
Abstract
Quantum technologies such as quantum computing and quantum cryptography exhibit rapid progress. This requires the provision of high-quality photodetectors and the ability to efficiently detect single photons. Hence, conventional avalanche photodiodes for single photon detection are not the first choice anymore. A better alternative are superconducting nanowire single photon detectors, which use the superconducting to normal conductance phase transition. One big challenge is to reduce the product between recovery time and detection efficiency. To address this problem, we enhance the absorption using resonant plasmonic perfect absorber effects, to reach near-100% absorption over small areas. This is aided by the high resonant absorption cross section and the angle insensitivity of plasmonic resonances. In this work we present a superconducting niobium nitride plasmonic perfect absorber structure and use its tunable plasmonic resonance to create a polarization dependent photodetector with near-100% absorption efficiency in the infrared spectral range. Further we fabricated a detector and investigated its response to an external light source. We also demonstrate the resonant plasmonic behavior which manifests itself through a polarization dependence detector response.
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Schneider R, Zaitsev AG, Fuchs D, V Löhneysen H. Superconductor-insulator quantum phase transition in disordered FeSe thin films. PHYSICAL REVIEW LETTERS 2012; 108:257003. [PMID: 23004643 DOI: 10.1103/physrevlett.108.257003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Indexed: 06/01/2023]
Abstract
The evolution of two-dimensional electronic transport with increasing disorder in epitaxial FeSe thin films is studied. Disorder is generated by reducing the film thickness. The extreme sensitivity of the films to disorder results in a superconductor-insulator transition. The finite-size scaling analysis in the critical regime based on the Bose-glass model strongly supports the idea of a continuous quantum phase transition. The obtained value for the critical-exponent product of approximately 7/3 suggests that the transition is governed by quantum percolation. Finite-size scaling with the same critical-exponent product is also substantiated when the superconductor-insulator transition is tuned with an applied magnetic field.
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Affiliation(s)
- R Schneider
- Institut für Festkörperphysik, Karlsruher Institut für Technologie, D-76021 Karlsruhe, Germany.
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Chudnovsky EM. Instanton glass generated by noise in a Josephson-junction array. PHYSICAL REVIEW LETTERS 2009; 103:137001. [PMID: 19905536 DOI: 10.1103/physrevlett.103.137001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Indexed: 05/28/2023]
Abstract
We compute the correlation function of a superconducting order parameter in a continuous model of a two-dimensional Josephson-junction array in the presence of a weak Gaussian noise. When the Josephson coupling is large compared to the charging energy, the correlations in the Euclidian space decay exponentially at low temperatures regardless of the strength of the noise. We interpret such a state as a collective Cooper-pair insulator and argue that it resembles properties of disordered superconducting films.
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Affiliation(s)
- E M Chudnovsky
- Physics Department, Lehman College, The City University of New York, Bronx, New York 10468-1589, USA
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Inoue M, Matsushita H, Hayakawa H, Ohbayashi K. Critical sheet resistance and two-dimensional properties of Bi2Sr2CuOx thin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:15448-15455. [PMID: 9978504 DOI: 10.1103/physrevb.51.15448] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lee S, Park KW, Shin M, Lee EH, Kim K, Kim N, Lee HJ, Hong SC. Effects of an electrostatic field on the normal and superconducting states of a Mo-C film. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3238-3241. [PMID: 9979117 DOI: 10.1103/physrevb.51.3238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wallin M, Sorensen ES, Girvin SM, Young AP. Superconductor-insulator transition in two-dimensional dirty boson systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:12115-12139. [PMID: 10010086 DOI: 10.1103/physrevb.49.12115] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Cha MC, Girvin SM. Universal conductivity in the boson Hubbard model in a magnetic field. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:9794-9801. [PMID: 10009780 DOI: 10.1103/physrevb.49.9794] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Makivic M, Trivedi N, Ullah S. Disordered bosons: Critical phenomena and evidence for new low energy excitations. PHYSICAL REVIEW LETTERS 1993; 71:2307-2310. [PMID: 10054640 DOI: 10.1103/physrevlett.71.2307] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Batrouni GG, Larson B, Scalettar RT, Tobochnik J, Wang J. Universal conductivity in the two-dimensional boson Hubbard model. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:9628-9635. [PMID: 10007208 DOI: 10.1103/physrevb.48.9628] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kim YB, Wen XG. Effects of collective modes on pair tunneling into superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:6319-6329. [PMID: 10009178 DOI: 10.1103/physrevb.48.6319] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sharifi F, Herzog AV, Dynes RC. Crossover from two to one dimension in in situ grown wires of Pb. PHYSICAL REVIEW LETTERS 1993; 71:428-431. [PMID: 10055268 DOI: 10.1103/physrevlett.71.428] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Hsu SY, Valles JM. Perpendicular upper critical field of granular Pb films near the superconductor-to-insulator transition. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:14334-14337. [PMID: 10005781 DOI: 10.1103/physrevb.47.14334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Liu Y, Haviland DB, Nease B, Goldman AM. Insulator-to-superconductor transition in ultrathin films. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:5931-5946. [PMID: 10004542 DOI: 10.1103/physrevb.47.5931] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Valles JM, Dynes RC, Garno JP. Electron tunneling determination of the order-parameter amplitude at the superconductor-insulator transition in 2D. PHYSICAL REVIEW LETTERS 1992; 69:3567-3570. [PMID: 10046854 DOI: 10.1103/physrevlett.69.3567] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Lee SJ, Ketterson JB, Trivedi N. Metal-insulator transition in quasi-two-dimensional Mo-C films. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:12695-12700. [PMID: 10003189 DOI: 10.1103/physrevb.46.12695] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Paalanen MA, Hebard AF, Ruel RR. Low-temperature insulating phases of uniformly disordered two-dimensional superconductors. PHYSICAL REVIEW LETTERS 1992; 69:1604-1607. [PMID: 10046264 DOI: 10.1103/physrevlett.69.1604] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Sorensen ES, Wallin M, Girvin SM, Young AP. Universal conductivity of dirty bosons at the superconductor-insulator transition. PHYSICAL REVIEW LETTERS 1992; 69:828-831. [PMID: 10047043 DOI: 10.1103/physrevlett.69.828] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Tanda S, Ohzeki S, Nakayama T. Bose glass-vortex-glass phase transition and dynamics scaling for high-Tc Nd2-xCexCuO4 thin films. PHYSICAL REVIEW LETTERS 1992; 69:530-533. [PMID: 10046962 DOI: 10.1103/physrevlett.69.530] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Gold A. Dynamical conductivity of the two-dimensional Bose condensate: Superfluid-insulator transition for a long-range random potential. ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf01315645] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kirkpatrick TR, Belitz D. Suppression of superconductivity by disorder. PHYSICAL REVIEW LETTERS 1992; 68:3232-3235. [PMID: 10045647 DOI: 10.1103/physrevlett.68.3232] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Liu Y, McGreer KA, Nease B, Haviland DB, Martinez G, Halley JW, Goldman AM. Scaling of the insulator-to-superconductor transition in ultrathin amorphous Bi films. PHYSICAL REVIEW LETTERS 1991; 67:2068-2071. [PMID: 10044327 DOI: 10.1103/physrevlett.67.2068] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Cha MC, Fisher MP, Girvin SM, Wallin M, Young AP. Universal conductivity of two-dimensional films at the superconductor-insulator transition. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:6883-6902. [PMID: 9998569 DOI: 10.1103/physrevb.44.6883] [Citation(s) in RCA: 163] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gold A. Transport properties of the disordered charged bose condensate in two dimensions. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf01313414] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kim K, Weichman PB. Hyperuniversality in quantum critical phenomena. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:13583-13586. [PMID: 9997191 DOI: 10.1103/physrevb.43.13583] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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