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The value of the half-wave voltage of the phase modulator must be measured with high accuracy to reduce the quantum bit error rate (QBER) in a quantum key distribution system based the phase-coding scheme. A new method to measure the half-wave voltage of the phase modulator in an accuracy of 2 mV by adjusting the quantum bit error rate (QBER) of the deterministic quantum key distribution is proposed experimentally to increase the accuracy of the half-wave voltage and reduce the error rate of the quantum key distribution system. The experimental results show that this method can be used to acquire efficiently the half-wave voltage of the phase modulator in a high accuracy which can make the error rate from adding the inaccurate voltage to the phase modulator decrease to the greatest extent.
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Keywords:
- quantum cryptography /
- phase-encoding /
- half-wave voltage /
- quantum bit error rate
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[1] Wiesner S 1983 SIGACT News 15 78
[2] [3] 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
[4] [5] Hwang W Y 2003 Phys. Rev. Lett. 91 057901
[6] Kurtsiefer C, Zarda P, Halder M, Weinfurter H, Gorman P, Tapster P R, Rarity J G 2002 Nature 419 450
[7] [8] [9] 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
[10] Stucki D, Gisin N, Guinnard O, Ribordy G, Zbinden H 2002 New J. Phys. 4 41
[11] [12] [13] 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
[14] [15] Elliott C, Colvin A, Pearson D, Pikalo O, Schlafer J, Yeh H 2005 Proceedings of the SPIE, May 25, 2005 p138
[16] [17] Poppe Andreas, Peev M, Maurhart O 2008 Int. J. Quantum Inf. 6 2
[18] 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]
[19] [20] 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]
[21] [22] Wang J D, Qin X J, Zhang H N, Wei Z J, Liao C J, Liu S H 2009 Optics Communications 282 3379
[23] [24] 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
[25] [26] Gisin N, Ribordy G, Tittel W, Zbinden H 2002 Rev. Mod. Phys. 74 145
[27] [28] [29] Chen W, Han Z F, Mo X F, Xu F X, Wei G, Guo G C 2008 Chinese Science Bulletin 53 9
[30] [31] Makarov V, Brylevski A, Hjelme D R 2004 Appl. Opt. 43 4385
[32] 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]
[33] [34] [35] Zhou N R, Wang L J, Ding J, Gong L H 2010 Physica Scripta. 81 045009
[36] [37] Zhou N R, Wang L J, Ding J, Gong L H 2010 International Journal of Theoretical Physics 49 2035
[38] [39] Inoue K, Waks E, Yamamoto Y 2002 Phys. Rev. Lett. 89 037902
[40] [41] Takesue H, Sae W N, Qiang Z, Robert H, Toshimori H, Kiyoshi T, Yamamoto Y 2007 Nat. Photonics 1 343
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