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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.
[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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[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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