基于不可信光源的量子密钥分配的统计特性研究

焦荣珍; 丁天; 王文集; 马海强

doi:10.7498/aps.62.180302

摘要

通过比较被动系统与主动系统的特性, 得出可信光源、不可信光源主动系统和不可信光源被动系统的密钥生成率随距离的变化关系; 采用标准误差分析法, 得到相应变量的偏离量; 基于诱骗态方案分析不可信光源被动系统暗计数率和光源强度参数波动对系统安全特性的影响, 得出在1310 nm 和1550 nm通信窗口下, 系统最大安全通信距离范围分别为[73.2 km, 96.5 km] 和[104.5 km, 137.9 km]. 这可为实用量子通信实验提供重要的理论参数.

关键词:

Abstract

The performance of active decoy-state quantum key distribution (QKD) system with an untrusted source is compared with that of passive decoy-state QKD. The key generation rate with the change of the secure transmission distance is shown under the condition of active decoy-state (or passive decoy-state) QKD where we pick the data size to be N=1012. The security characteristics of the passive scheme are studied with statistical fluctuation of the counting rate and the intensity of the practical source. At communication wavelength 1310 nm or 1550 nm, The security range of communication distance is [73.2 km, 96.5 km] or [104.5 km, 137.9 km] respectively. This analysis will provide important theoretical parameters for practical QKD experiment.

Keywords:

作者及机构信息

1.
北京邮电大学理学院, 北京 100876

基金项目: 国家重点基础研究计划(批准号:2010CB923202)资助的课题.

Authors and contacts

1.
Science School, Beijing University of Post and Telecommunication, Beijing 100876, China

Funds: Project supported by National Basic Research Program of China (Grant No. 2010CB923202).

参考文献

[1]	Bennett C H, Brassard G 1984 Proc. IEEE Int. Conf. Computers, Systems and Signal Processing (Bangalore, New York: IEEE)
[2]	Lo H K, Ma X, Chen K 2005 Phys. Rev. Lett. 94 230504
[3]	Ma X F Qi B, Zhao Y, Lo H K 2005 Phys. Rev. A 72 012326
[4]	Mao E L, Mo X F, Gui Y Z, Han Z F, Guo G C 2004 Acta Phys. Sin. 53 2126 (in Chinese) [苗二龙, 莫小范, 桂有珍, 韩正甫, 郭光灿 2004 物理学报 53 2126]
[5]	Wang X B 2005 Phys. Rev. Lett. 94 230503
[6]	Wang J D, Wei Z J, Zhang H, Zhang H N, Chen S, Qin X J, Guo J P, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 5514 (in Chinese) [王金东, 魏正军, 张辉, 张华妮, 陈帅, 秦晓娟, 郭健平, 廖常俊, 刘颂豪2010物理学报 59 5514]
[7]	Muller A, Herzog T, Hutter B, Tittel W 1996 Appl. Phys. Lett. 70 07793
[8]	Zhao Y Qi B, Lo H K 2008 Phys. Rev. A 77 052327
[9]	Zhu C H, Pei C X, Quan D X, Gao J L, Chen N, Yi Y H 2010 Chin. Phys. Lett. 27 090301
[10]	Hwang W Y 2003 Phys. Rev. Lett. 91 057901
[11]	Gobby C, Yuan Z L, Shield A J 2004 Appl. Phys. Lett. 84 3762
[12]	Peng X, Jiang H, Xu B J, Ma X F, Guo H 2008 Opt. Lett. 33 2077
[13]	Zhao Y, Qi B, Lo H K, Qian L 2010 New. J. Phys. 12 023024

施引文献

[1]	Bennett C H, Brassard G 1984 Proc. IEEE Int. Conf. Computers, Systems and Signal Processing (Bangalore, New York: IEEE)
[2]	Lo H K, Ma X, Chen K 2005 Phys. Rev. Lett. 94 230504
[3]	Ma X F Qi B, Zhao Y, Lo H K 2005 Phys. Rev. A 72 012326
[4]	Mao E L, Mo X F, Gui Y Z, Han Z F, Guo G C 2004 Acta Phys. Sin. 53 2126 (in Chinese) [苗二龙, 莫小范, 桂有珍, 韩正甫, 郭光灿 2004 物理学报 53 2126]
[5]	Wang X B 2005 Phys. Rev. Lett. 94 230503
[6]	Wang J D, Wei Z J, Zhang H, Zhang H N, Chen S, Qin X J, Guo J P, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 5514 (in Chinese) [王金东, 魏正军, 张辉, 张华妮, 陈帅, 秦晓娟, 郭健平, 廖常俊, 刘颂豪2010物理学报 59 5514]
[7]	Muller A, Herzog T, Hutter B, Tittel W 1996 Appl. Phys. Lett. 70 07793
[8]	Zhao Y Qi B, Lo H K 2008 Phys. Rev. A 77 052327
[9]	Zhu C H, Pei C X, Quan D X, Gao J L, Chen N, Yi Y H 2010 Chin. Phys. Lett. 27 090301
[10]	Hwang W Y 2003 Phys. Rev. Lett. 91 057901
[11]	Gobby C, Yuan Z L, Shield A J 2004 Appl. Phys. Lett. 84 3762
[12]	Peng X, Jiang H, Xu B J, Ma X F, Guo H 2008 Opt. Lett. 33 2077
[13]	Zhao Y, Qi B, Lo H K, Qian L 2010 New. J. Phys. 12 023024

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