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Low-efficiency is an important issue in "plug and play" quantum key distribution system for practical application. The inefficient reasons of system and the current solutions are analyzed. And then a new quantum key distribution scheme with multi-wavelength pulses is proposed, in which a broadband optical source and the WDMs are combined to generate the optical pulses with four wavelengths. Moreover, the WDMs can also be used as a filter to extract the signal in the proposed scheme. Compared with other schemes, this scheme is highly stable, more securate and independent of the response speed of the control systems. The scheme can be used in high efficiency "plug and play" quantum key distribution system in practice.
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Keywords:
- quantum cryptography /
- bidirectional system /
- rayleigh scattering /
- multi-wavelength
[1] Bennett C H, Brassard G 1984 Proceedings of the IEEE International Conference on Computers, Systems, and Signal Processing, Bangalore, India, New York: IEEE 175
[2] Bennett C H 1992 Phys. Rev. Lett. 68 3121
[3] Bennett C H, Brassard G, Mermin N D 1992 Phys. Rev. Lett. 68 557
[4] Gisin N, Ribordy G, Tittel W, Zbinden H 2002 Rev. Mod. Phys. 74 145
[5] Zhou N R, Zeng G H, Gong L H, Liu S Q 2007 Acta Phys. Sin. 56 5066 (in Chinese) [周南润, 曾贵华, 龚黎华, 刘三秋 2007 56 5066]
[6] Zhou N R, Wang L J, Ding J, Gong L H 2010 Physica Scripta 81 045009
[7] Zhou N R, Wang L J, Ding J, Gong L H 2010 Int. J. Theor. Phys. 49 2035
[8] Inoue K, Waks E, Yamamoto Y 2002 Phys. Rev. Lett. 89 037902
[9] Mo X F, Zhu B, Han Z F, Gui Y, Guo G C 2005 Opt. Lett. 30 19
[10] Gobby C, Yuan Z L, Shields A J 2004 Appl. Phys. Lett. 84 3762
[11] 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]
[12] 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]
[13] Donald S B, William P R 2002 New J. Phys. 4 42.1
[14] Chen W, Han Z F, Mo X F, Xu F X, Wei G, Guo G C 2008 Chin. Sci. Bull. 53 1310
[15] Wang J D, Qin X J, Wei Z J, Liu X B, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 281 (in Chinese) [王金东, 秦晓娟, 魏正军, 刘小宝, 廖常俊, 刘颂豪 2010 59 281]
[16] Zhang L J, Wang Y G, Yin Z Q, Chen W, Yang Y, Zhang T, Huang D J, Wang S, Li F Y, Han Z F 2011 Chin. Sci. Bull. 56 2305
[17] Muller A, Herzog T, Huttner B, Tittel W, Zbinden H, Gisin N 1997 Appl. Phys. Lett. 70 793
[18] Stucki D, Gisin N, Guinnard O, Ribordy G, Zbinden H 2002 New J. Phys. 4 41.1
[19] Honjo T, Inoue K 2005 Jpn. J. Appl. Phys. 44 6550
[20] Peng X, Jiang H, Guo H 2008 J. Phys. B: At. Mol. Opt. Phys. 41 085509
[21] Antia L L, Christian K 2007 Opt. Express 15 9388
[22] Sebastian N, Martin F, Tobias S M, Henning W, Harald W 2009 New J. Phys. 11 065001
[23] Lee S H, Jeong K H, Kim S H, Kin K H 2008 J. Korean Phys. Soc. 52 5
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[1] Bennett C H, Brassard G 1984 Proceedings of the IEEE International Conference on Computers, Systems, and Signal Processing, Bangalore, India, New York: IEEE 175
[2] Bennett C H 1992 Phys. Rev. Lett. 68 3121
[3] Bennett C H, Brassard G, Mermin N D 1992 Phys. Rev. Lett. 68 557
[4] Gisin N, Ribordy G, Tittel W, Zbinden H 2002 Rev. Mod. Phys. 74 145
[5] Zhou N R, Zeng G H, Gong L H, Liu S Q 2007 Acta Phys. Sin. 56 5066 (in Chinese) [周南润, 曾贵华, 龚黎华, 刘三秋 2007 56 5066]
[6] Zhou N R, Wang L J, Ding J, Gong L H 2010 Physica Scripta 81 045009
[7] Zhou N R, Wang L J, Ding J, Gong L H 2010 Int. J. Theor. Phys. 49 2035
[8] Inoue K, Waks E, Yamamoto Y 2002 Phys. Rev. Lett. 89 037902
[9] Mo X F, Zhu B, Han Z F, Gui Y, Guo G C 2005 Opt. Lett. 30 19
[10] Gobby C, Yuan Z L, Shields A J 2004 Appl. Phys. Lett. 84 3762
[11] 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]
[12] 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]
[13] Donald S B, William P R 2002 New J. Phys. 4 42.1
[14] Chen W, Han Z F, Mo X F, Xu F X, Wei G, Guo G C 2008 Chin. Sci. Bull. 53 1310
[15] Wang J D, Qin X J, Wei Z J, Liu X B, Liao C J, Liu S H 2010 Acta Phys. Sin. 59 281 (in Chinese) [王金东, 秦晓娟, 魏正军, 刘小宝, 廖常俊, 刘颂豪 2010 59 281]
[16] Zhang L J, Wang Y G, Yin Z Q, Chen W, Yang Y, Zhang T, Huang D J, Wang S, Li F Y, Han Z F 2011 Chin. Sci. Bull. 56 2305
[17] Muller A, Herzog T, Huttner B, Tittel W, Zbinden H, Gisin N 1997 Appl. Phys. Lett. 70 793
[18] Stucki D, Gisin N, Guinnard O, Ribordy G, Zbinden H 2002 New J. Phys. 4 41.1
[19] Honjo T, Inoue K 2005 Jpn. J. Appl. Phys. 44 6550
[20] Peng X, Jiang H, Guo H 2008 J. Phys. B: At. Mol. Opt. Phys. 41 085509
[21] Antia L L, Christian K 2007 Opt. Express 15 9388
[22] Sebastian N, Martin F, Tobias S M, Henning W, Harald W 2009 New J. Phys. 11 065001
[23] Lee S H, Jeong K H, Kim S H, Kin K H 2008 J. Korean Phys. Soc. 52 5
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