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We suggest a combined modulation quantum key distribution (QKD) system which encodes each single-photon signal with both phase modulation and polarization modulation. With the aid of dual-velocity protocol of hybrid QKD system, we construct a scheme to realize this combined modulation QKD which generates two-bit key with one signal for increasing the efficiency of QKD. We also develop a combined modulation Michelson QKD system, then solve the stability problem of the combined modulation QKD system in principle.
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Keywords:
- quantum key distribution /
- dual-velocity protocol /
- hybrid modulation /
- stability of QKD system
[1] Bennett C H, Brassard G 1984 Int. Conf. Computers Systems & Signal Processing (New York: IEEE) 175
[2] Gisin N, Ribordy G, Tittle W, Zbinden H 2002 Rev. Mod. Phys. 74 145
[3] Liang C, Fu D H, Liang B, Liao J, Wu L A, Yao D C, Lv S W 2001 Acta Phys. Sin. 50 1429 (in Chinese) [梁创, 符东浩, 梁冰, 廖静, 吴令安, 姚德成, 吕述望 2001 textbf50 1429]
[4] Tang Z L, Li M, Wei Z J, Lu F, Liao C J, Liu S H 2005 Acta Phys. Sin. 54 2534 (in Chinese) [唐志列, 李铭, 魏正军, 卢非, 廖常俊, 刘颂豪 2005 54 2534]
[5] He G Q, Zeng G H 2006 Chin. Phys. 15 1284
[6] Guo B H, Wang F Q, Liao C J, Liu S H 2007 Acta Phys. Sin. 56 3695 (in Chinese) [郭邦红, 王发强, 廖常俊, 刘颂豪 2007 56 3695]
[7] Yang, L, Wu L A, Liu S H 2002 Acta Phys. Sin. 51 961 (in Chinese) [杨理, 吴令安, 刘颂豪 2002 51 961]
[8] Inoue K, Waks E, Yamamoto Y 2002 Phys. Rev. Lett. 89 037902
[9] Hwang W Y 2003 Phys. Rev. Lett. 91 057901
[10] Wang X B 2005 Phys. Rev. Lett. 94 230503
[11] Fabio A M, Rubens V R 2006 arXiv: quant-ph/0609065
[12] Chen X, Wang F Q, Lu T Q, Zhao F, Li M M, Mi J L, Liang R S, Liu S H 2007 Acta Phys. Sin. 56 6434 (in Chinese) [陈霞, 王发强, 路轶群, 赵峰, 李明明, 米景隆, 梁瑞生, 刘颂豪 2007 56 6434]
[13] Hu H P, Zhang J, Wang J D, Huang Y X, Lu T 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] Yang L, Wu L A, Zhao Z S, Liu S H, Mixed modulated quantum key distribution system (Invited Talk) 2006 Annual Symposium of Chinese Optics Society (Conference of quantum optics) (in Chinese) [杨理, 吴令安, 赵震声, 刘颂豪 2006 混合调制量子密钥分发系统 (量子光学专题, 特邀报告) 中国光学学会2006年学术大会]
[15] Yang L, Wu L A, Liu S H 2002 Acta Phys. Sin. 51 2446 (in Chinese) [杨理, 吴令安, 刘颂豪 2002 51 2446]
[16] Mo X F, Zhu B, Gui Y Z, Han Z F, Guo G C 2005 Opt. Lett. 30 2633
[17] Ma H Q, Zhao J L, Wu L A 2007 Opt. Lett. 32 698
[18] Zhuang S S, Yang L, Unconditional security of relativistic quantum key distribution protocol (Invited Paper) 2010 Photonics Asia, October 18-21, Beijing, 2010 78460I
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[1] Bennett C H, Brassard G 1984 Int. Conf. Computers Systems & Signal Processing (New York: IEEE) 175
[2] Gisin N, Ribordy G, Tittle W, Zbinden H 2002 Rev. Mod. Phys. 74 145
[3] Liang C, Fu D H, Liang B, Liao J, Wu L A, Yao D C, Lv S W 2001 Acta Phys. Sin. 50 1429 (in Chinese) [梁创, 符东浩, 梁冰, 廖静, 吴令安, 姚德成, 吕述望 2001 textbf50 1429]
[4] Tang Z L, Li M, Wei Z J, Lu F, Liao C J, Liu S H 2005 Acta Phys. Sin. 54 2534 (in Chinese) [唐志列, 李铭, 魏正军, 卢非, 廖常俊, 刘颂豪 2005 54 2534]
[5] He G Q, Zeng G H 2006 Chin. Phys. 15 1284
[6] Guo B H, Wang F Q, Liao C J, Liu S H 2007 Acta Phys. Sin. 56 3695 (in Chinese) [郭邦红, 王发强, 廖常俊, 刘颂豪 2007 56 3695]
[7] Yang, L, Wu L A, Liu S H 2002 Acta Phys. Sin. 51 961 (in Chinese) [杨理, 吴令安, 刘颂豪 2002 51 961]
[8] Inoue K, Waks E, Yamamoto Y 2002 Phys. Rev. Lett. 89 037902
[9] Hwang W Y 2003 Phys. Rev. Lett. 91 057901
[10] Wang X B 2005 Phys. Rev. Lett. 94 230503
[11] Fabio A M, Rubens V R 2006 arXiv: quant-ph/0609065
[12] Chen X, Wang F Q, Lu T Q, Zhao F, Li M M, Mi J L, Liang R S, Liu S H 2007 Acta Phys. Sin. 56 6434 (in Chinese) [陈霞, 王发强, 路轶群, 赵峰, 李明明, 米景隆, 梁瑞生, 刘颂豪 2007 56 6434]
[13] Hu H P, Zhang J, Wang J D, Huang Y X, Lu T 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] Yang L, Wu L A, Zhao Z S, Liu S H, Mixed modulated quantum key distribution system (Invited Talk) 2006 Annual Symposium of Chinese Optics Society (Conference of quantum optics) (in Chinese) [杨理, 吴令安, 赵震声, 刘颂豪 2006 混合调制量子密钥分发系统 (量子光学专题, 特邀报告) 中国光学学会2006年学术大会]
[15] Yang L, Wu L A, Liu S H 2002 Acta Phys. Sin. 51 2446 (in Chinese) [杨理, 吴令安, 刘颂豪 2002 51 2446]
[16] Mo X F, Zhu B, Gui Y Z, Han Z F, Guo G C 2005 Opt. Lett. 30 2633
[17] Ma H Q, Zhao J L, Wu L A 2007 Opt. Lett. 32 698
[18] Zhuang S S, Yang L, Unconditional security of relativistic quantum key distribution protocol (Invited Paper) 2010 Photonics Asia, October 18-21, Beijing, 2010 78460I
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