Superconducting nanowire single-photon detection system and demonstration in quantum key distribution

作     者：CHEN SiJing LIU DengKuan YOU LiXing WANG YongLiang QIU LongQing XIE XiaoMing JIANG MianHeng CHEN TengYun LIU Yang MIKI Shigehito WANG Zhen 

作者机构：State Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences University of Chinese Academy of Sciences Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern PhysicsUniversity of Science and Technology of China Kobe Advanced Research CenterNational Institute of Information and Communications Technology588-2IwaokaNishi-kuKobeHyogo 651-2492Japan 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2013年第58卷第10期

页      面：1145-1149页

核心收录：

学科分类：11[军事学] 1105[军事学-军队指挥学] 07[理学] 0839[工学-网络空间安全] 08[工学] 070201[理学-理论物理] 110505[军事学-密码学] 110503[军事学-军事通信学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (91121022) Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB04010200 and XDB04020100) National Basic Research Program of China (2011CBA00202) National High-Tech Research and Development Program of China (2011AA010802) 

主　　题：量子密钥分配 光子探测系统 纳米线 超导 演示 量子密钥分发 通信应用 影响系统 

摘      要：We developed a superconducting nanowire single-photon detection(SNSPD) system based on Gifford-McMahon cryocooler for quantum communication *** factors which may influence the system performance are intensively *** factors include temperature fluctuations,the ambient magnetic field and the background *** optimizing the bias circuit,the stability of SNSPD system to electrical noise and disturbance was effectively enhanced,thus making it more suitable for field application.A 4-channel SNSPD system with quantum efficiency higher than 4% at the dark count rate of 10 Hz for λ=1550 nm is integrated and applied into a quantum key distribution(QKD) *** was successfully carried out over 100 km optical fiber with the final secure key rate of 1.6 kbps and the quantum bit error rate of less than 2%.