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基于法拉第-麦克尔逊干涉检测的低误码差分相位编码实验系统

魏正军 万伟 王金东 廖常俊 刘颂豪

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基于法拉第-麦克尔逊干涉检测的低误码差分相位编码实验系统

魏正军, 万伟, 王金东, 廖常俊, 刘颂豪

A new differential phase shift quantum key distribution system with Faraday-Michelson interferometer

Wei Zheng-Jun, Wan Wei, Wang Jin-Dong, Liao Chang-Jun, Liu Song-Hao
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  • 采用法拉第-麦克尔逊干涉仪检测的方法实现了基于强度调制的弱相干光脉冲的差分相位编码系统.系统针对各个可能引起误码的关键环节提出并采用了相关物理方案来减小系统的误码,采用可以产生高精度任意频率的小数分频的锁相环时钟发生器为系统提供时钟信号,减小了由于通信双方时域不匹配而带来的误码;采用单光子计数水平下高精度实时测量行波相位调制器半波电压的新方法减小了由于不准确加载相位电压引起的误码;采用单光子计数水平下的法拉第-麦克尔逊干涉仪解决自动补偿单光子脉冲干涉的偏振匹配问题,提高了系统的干涉对比度,实验结果实现了5
    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.
    • 基金项目: 广州市科技支撑计划(批准号:2008Z1-D501),广东省工业攻关项目(批准号:2007B010400009)和中国科学院量子信息技术重点实验室开放课题资助的课题.
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  • [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 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 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 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

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计量
  • 文章访问数:  9235
  • PDF下载量:  770
  • 被引次数: 0
出版历程
  • 收稿日期:  2011-02-07
  • 修回日期:  2011-04-09
  • 刊出日期:  2011-09-15

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