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By exploiting quantum teleportation, we propose a continuous-variable quantum deterministic key distribution (CVQDKD) protocol using two-mode squeezed vacuum state and coherent state. The efficiency is 100% under the homodyne detection. The security of CVQDKD is analyzed in detail from information theory, and the result shows that the proposed protocol can securely hand over the pre-deterministic key. By contrast with the quantum random key distribution, the quantum deterministic key distribution plays an irreplaceable role in the field of key management. Furthermore, the CVQDKD can obtain a higher rate and better efficiency than the quantum deterministic key distribution protocols with discrete variables, and the quantum states used in the protocol are also easy to produce and manipulate, which i suitable for long-distance transmission. Therefore, the CVQDKD protocol is more practical.
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Keywords:
- continuous-variable /
- quantum deterministic key distribution /
- key management /
- quantum communication
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[11] Lodewyck J, Bloch M, Patron R G, Fossier S, Karpov E, Diamanti E, Debuisschert T 2007 Phys. Rev. A 76 042305
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[16] Qi B, Zhu W, Qian L, Lo H K 2010 New J. Phys. 12 103042
[17] Namekata N, Takesue H, Honjo T, Tokura Y, Inouen S 2011 Opt. Expr. 19 10632
[18] Leverrier A, Grangier P 2011 Phys. Rev. A 83 042312
[19] Zhou N R, Zeng G H, Nie Y Y, Xiong J, Zhu F C 2006 Physica A 362 305
[20] He G Q, Zhu J, Zeng G H 2006 Phys. Rev. A 73 012314
[21] Zhou N R, Wang L J, Ding J, Gong L H 2010 Phys. Scr. 81 045009
[22] Zhou N R, Wang L J, Ding J, Gong L H, Zuo X W 2010 Int. J. Theor. Phys. 49 2035
[23] Zhou N R, Wang L J, Gong L H, Zuo X W Liu Y 2010 Opt. Commun. 284 4836
[24] Song T Q 2004 Acta Phys. Sin. 53 3358 (in Chinese) [宋同强 2004 53 3358]
[25] Yan W, Zhang W J 2007 Chin. Phys. 16 2584
[26] Weedbrook C 2003 Quantum cryptography without basis switching, University of Queensland
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[1] Ralph T C 1999 Phys. Rev. A 61 010303
[2] Ralph T C 2000 Phys. Rev. A 62 062306
[3] Cerf N J, Levy M, Assche G V 2001 Phys. Rev. A 63 052311
[4] Grosshans F, Grangier P 2002 Phys. Rev. Lett. 88 057902
[5] Silberhorn C, Ralph T C, Lutkenhaus N, Leuchs G 2002 Phys. Rev. Lett. 89 167901
[6] Grosshans F, Assche G V, Wenger J, Brouri R, Cerf N J, Grangier P 2003 Nature 421 238
[7] Weedbrook C, Lance A M, Bowen W P, Symul T, Ralph T C, Lam P K 2004 Phys. Rev. Lett. 93 170504
[8] Ma H Q, Li Y L, Zhao H, Wu L A 2005 Acta Phys. Sin. 54 5014 (in Chinese) [马海强, 李亚玲, 赵环, 吴令安 2005 54 5014]
[9] Namiki R 2006 Phys. Rev. A 74 032302
[10] He G Q, Zeng G H 2006 Commun. Theor. Phys. 46 16
[11] Lodewyck J, Bloch M, Patron R G, Fossier S, Karpov E, Diamanti E, Debuisschert T 2007 Phys. Rev. A 76 042305
[12] Patron R G, Cerf N J 2009 Phys. Rev. Lett. 102 130501
[13] Qian X D, He G Q, Zeng G H 2009 Sci. China. Ser. F 52 2072
[14] 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]
[15] Wei Z J, Wan W, Wang J D, Liao C J, Liu S H 2011 Acta Phys. Sin. 60 094217 (in Chinese) [魏正军, 万伟, 王金东, 廖常俊, 刘颂豪 2011 60 094217]
[16] Qi B, Zhu W, Qian L, Lo H K 2010 New J. Phys. 12 103042
[17] Namekata N, Takesue H, Honjo T, Tokura Y, Inouen S 2011 Opt. Expr. 19 10632
[18] Leverrier A, Grangier P 2011 Phys. Rev. A 83 042312
[19] Zhou N R, Zeng G H, Nie Y Y, Xiong J, Zhu F C 2006 Physica A 362 305
[20] He G Q, Zhu J, Zeng G H 2006 Phys. Rev. A 73 012314
[21] Zhou N R, Wang L J, Ding J, Gong L H 2010 Phys. Scr. 81 045009
[22] Zhou N R, Wang L J, Ding J, Gong L H, Zuo X W 2010 Int. J. Theor. Phys. 49 2035
[23] Zhou N R, Wang L J, Gong L H, Zuo X W Liu Y 2010 Opt. Commun. 284 4836
[24] Song T Q 2004 Acta Phys. Sin. 53 3358 (in Chinese) [宋同强 2004 53 3358]
[25] Yan W, Zhang W J 2007 Chin. Phys. 16 2584
[26] Weedbrook C 2003 Quantum cryptography without basis switching, University of Queensland
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