中国物理B ›› 2007, Vol. 16 ›› Issue (10): 2862-2866.doi: 10.1088/1009-1963/16/10/006

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Unconditional secure two-way quantum dense key distribution

闫旭东1, 吕 桦2, 陈爱喜3   

  1. (1)Department of Mathematics and Physics, Hubei University of Technology, Wuhan 430068, China; (2)Department of Mathematics and Physics,Hubei University of Technology, Wuhan 430068, China; Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences, Wuhan 430071, China;University of the Chinese Academy of Science, Beijing 100049, China; (3)Department of Physics, East China Jiaotong University, Nanchang 330013, China
  • 收稿日期:2006-11-09 修回日期:2007-04-13 出版日期:2007-10-08 发布日期:2007-10-08
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No~10504039).

Unconditional secure two-way quantum dense key distribution

Lü Hua(吕桦)a)c)d)†, Chen Ai-Xi(陈爱喜)b), and Yan Xu-Dong(闫旭东)a)   

  1. a Department of Mathematics and Physics, Hubei University of Technology, Wuhan 430068, China; b Department of Physics, East China Jiaotong University, Nanchang 330013, China; c Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences, Wuhan 430071, Chinad University of the Chinese Academy of Science, Beijing 100049, China
  • Received:2006-11-09 Revised:2007-04-13 Online:2007-10-08 Published:2007-10-08
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No~10504039).

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摘要： In this paper, we present a two-way quantum dense key distribution protocol. With double check modes, our scheme is secure regardless of the presence of noises. And with a quantum teleportation process, secret message can be encoded deterministically even if the quantum channel is highly lossy. Therefore, our scheme can be used in a realistic quantum channel regardless of the presence of noises and channel losses.

关键词: quantum cryptography, security, two-way communication

Abstract: In this paper, we present a two-way quantum dense key distribution protocol. With double check modes, our scheme is secure regardless of the presence of noises. And with a quantum teleportation process, secret message can be encoded deterministically even if the quantum channel is highly lossy. Therefore, our scheme can be used in a realistic quantum channel regardless of the presence of noises and channel losses.

Key words: quantum cryptography, security, two-way communication

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.65.Ud (Entanglement and quantum nonlocality) 05.40.Ca (Noise) 84.40.Ua (Telecommunications: signal transmission and processing; communication satellites)