Spectral Sensitivity of the NbN Single-Photon Superconducting Detector(<特集>Special Issue on Superconductive Electronics)
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概要
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We report our studies on the spectral sensitivity of superconducting NbN thin-film single-photon detectors (SPD's) capahle of GHz counting rates of visible and near-infrared photons. In particular, it has been shown that a NbN SPD is sensitive to 1.55-μm wavelength radiation and can he used for quantum communication. Our SPD's exhibit experimentally measured intrinsic quantum efficiencies from 20% at 800 nm up to〜1% at 1.55-μm wavelength. The devices demonstrate picosecond response time (< 100 ps limited by our readout sys- tem) and negligibly low dark counts. Spectral dependencies of photon counting of continuous-wave, 0.4-μm to 3.5-μm radiation, and 0.63-μm, 1.33-μm, and 1.55-μm laser-pulsed radiations are presented for the single-stripe-type and meander-type devices.
- 社団法人電子情報通信学会の論文
- 2002-03-01
著者
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Xu Ying
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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Smirnov Konstantin
Department Of Physics Moscow State Pedagogical University
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Zhang Jin
Department Of Physics Graduate School Of Science Nagoya University
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Zhang J
Xi'an Jiaotong Univ. Xi'an Chn
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SOBOLEWSKI Roman
Department of Electrical and Computer Engineering and Laboratory of Laser Energetics, University of
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ZHENG Xuemei
Department of Electrical and Computer Engineering and Laboratory of Laser Energetics, University of
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WILLIAMS Carlo
Department of Electrical and Computer Engineering and Laboratory of Laser Energetics, University of
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VEREVKIN Aleksandr
Department of Electrical and Computer Engineering and Laboratory of Laser Energetics, University of
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CHULKOVA Galina
Department of Physics, Moscow State Pedagogical University
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KORNEEV Alexander
Department of Physics, Moscow State Pedagogical University
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LIPATOV Andrey
Department of Physics, Moscow State Pedagogical University
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OKUNEV Oleg
Department of Physics, Moscow State Pedagogical University
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Okunev Oleg
Department Of Physics Moscow State Pedagogical University
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Zheng Xuemei
Department Of Electrical And Computer Engineering And Laboratory Of Laser Energetics University Of R
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Williams Carlo
Department Of Electrical And Computer Engineering And Laboratory Of Laser Energetics University Of R
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Lipatov Andrey
Department Of Physics Moscow State Pedagogical University
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Chulkova Galina
Department Of Physics Moscow State Pedagogical University
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Verevkin Aleksandr
Department Of Electrical And Computer Engineering And Laboratory Of Laser Energetics University Of R
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Zhang Jin
Department Of Electrical And Computer Engineering And Laboratory Of Laser Energetics University Of R
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Sobolewski Roman
Department Of Electrical And Computer Engineering And Laboratory Of Laser Energetics University Of R
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Korneev Alexander
Department Of Physics Moscow State Pedagogical University
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Xu Ying
Department Of Electrical And Computer Engineering And Laboratory Of Laser Energetics University Of R
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Zhang Jin
Department Of Animal Science & Biotechnology Chungnam National University
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Xu Ying
Department of Ecosystem Engineering, Graduate School of Engineering, The University of Tokushima
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XU Ying
Department of Burns, The First Affiliated Hospital, Sun Yat-sen University
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