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A new differential phase shift quantum key distribution system based on the intensity modulator with Faraday-Michelson interferometer is demonstrated experimentally. Some technologies are employed to improve the performance of the quantum key distribution system. These technologies include the clock generation technology of arbitrary frequency by a small scale frequency-split and phase locked loop scheme, the new method to acquire the half-wave voltage of the phase modulator with a high accuracy in the condition of the single photon count, and the auto-compensated polarization technology by the Faraday-Michelson interferometer. Finally, the quantum key distribution is achieved with a quantum bit error rate of 3.9% when the transmission distance reaches 50 km.
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Keywords:
- quantum cryptography /
- quantum key distribution /
- differential phase shift /
- Faraday-Michelson interferometer
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[45] -
[1] Wiesner S 1983 SIGACT News 15 78
[2] Bennett C H, Brassard G 1984 Proceedings of the IEEE International Conference on Computers, Systems, and Signal Processing, Bangalore, India,New York: IEEE 1984 p175
[3] [4] [5] Hwang W Y 2003 Phys. Rev. Lett. 91 057901
[6] [7] Tobias S M, Henning W, Martin F, Rupert U, Felix T, Thomas S, Josep P, Zoran S, Christian K, John G R, Anton Z, Harald W 2007 Phys. Rev. Lett. 98 010504
[8] Hiskett P A, Rosenberg D, Peterson C G, Hughes R J, Nam S W, Lita A E, Miller A J, Nordholt J E 2006 New J. Phys. 8 193
[9] [10] [11] Wang J D, Lu W, Zhao F, Liu X B, Guo B H, Zhang J, Huang Y X, Lu Y Q, Liu S H 2008 Acta Phys. Sin. 57 4214 (in Chinese) [王金东、路 巍、赵 峰、刘小宝、郭邦红、张 静、黄宇娴、路轶群、刘颂豪 2008 物理学报 57 4214]
[12] [13] Hu H P, Zhang J, Wang J D, Huang Y X, Lu Y Q, Liu S H, Lu W 2008 Acta Phys. Sin. 57 5605 (in Chinese) [胡华鹏、张 静、王金东、黄宇娴、路轶群、刘颂豪、路 巍 2008 物理学报 57 5605]
[14] [15] Wang J D, Qin X J, Zhang H N, Wei Z J, Liao C J, Liu S H 2009 Optics Communications 282 3379
[16] Wang J D, Wei Z J, Zhang H, Xiao J Q,Liu X B,Zhang Z M,Liao C J,Liu S H 2010 J. Phys. B: At. Mol. Opt. Phys. 43 095504
[17] [18] [19] Gisin N, Ribordy G, Tittel W, Zbinden H 2002 Rev. Mod. Phys. 74 145
[20] [21] Inoue K, Waks E, Yamamoto Y 2002 Phys. Rev. Lett. 89 037902
[22] [23] Honjo T, Inoue K, Takahashi H 2004 Optics Lett. 29 2797
[24] [25] Eleni D, Hiroki T, Carsten L, Fejer M M, Yamamoto Y 2006 Optics Experss 14 13073
[26] [27] Zhang Q, Takesue H, Honjo T, Wen K, Hirohata T, Suyama M, Takiguchi Y, Kamada H, Tokura Y, Tadanaga O, Nishida Y, Asobe M, Yamamoto Y 2009 New Journal of Physics 11 045010
[28] Mo X F, Zhu B, Han Z F, Gui Y Z, Guo G C 2005 Optics Lett. 30 2632
[29] [30] [31] Wang J D, Qin x J, Liu X B, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 281 (in Chinese) [王金东、秦晓娟、刘小宝、廖常俊、刘颂豪 2010 物理学报 59 281]
[32] [33] Takesue H, Sae W N, Qiang Z, Robert H, Toshimori H, Kiyoshi T, Yamamoto Y 2007 Nat. Photonics 1 343
[34] [35] Zhao Y B, Fung F C, Han Z F, Guo G C 2008 Phys. Rev. A 78 042330
[36] [37] A Eusebi, S Mancini 2009 Quant Inf Comp 9 950
[38] Zhou N R, Wang L J, Ding J, Gong L H 2010 Physica Scripta 81 045009
[39] [40] Zhou N R, Wang L J, Ding J, Gong L H 2010 International Journal of Theoretical Physics 49 2035
[41] [42] [43] Zhong P P, Zhang H N, Wang J D, Qin X J, Wei Z J, Chen S, Liu S H 2011 Chin. Phys. B 20 050307
[44] Toshimori Honjo, Atsushi Uchida, Kazuya Amano, Kunihito Hirano, Hiroyuki Someya, Haruka Okumura, Kazuyuki Yoshimura, Peter Davis and Yasuhiro Tokura 2009 Optics Express 17 9053
[45]
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