中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2352-2355.doi: 10.1088/1674-1056/17/7/005

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Efficient quantum secure communication with a publicly known key

周宏余1, 李春燕2, 李熙涵2, 邓富国2   

  1. (1)The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China;Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, C; (2)The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal Univer
  • 收稿日期:2007-11-23 修回日期:2007-12-24 出版日期:2008-07-09 发布日期:2008-07-09
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10604008), Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No 200723), and Beijing Education Committee of China (Grant No XK100270454).

Efficient quantum secure communication with a publicly known key

Li Chun-Yan(李春燕)a)b)c), Li Xi-Han(李熙涵)a)b)c), Deng Fu-Guo(邓富国)a)d)†, and Zhou Hong-Yu(周宏余)a)b)c)   

  1. a The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing  100875, China; b Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal University, Beijing 100875, China; c Beijing Radiation Center, Beijing 100875, China; d Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China
  • Received:2007-11-23 Revised:2007-12-24 Online:2008-07-09 Published:2008-07-09
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10604008), Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No 200723), and Beijing Education Committee of China (Grant No XK100270454).

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摘要： This paper presents a simple way for an eavesdropper to eavesdrop freely the secret message in the experimental realization of quantum communication protocol proposed by Beige et al (2002 Acta Phys. Pol. A 101 357). Moreover, it introduces an efficient quantum secure communication protocol based on a publicly known key with decoy photons and two biased bases by modifying the original protocol. The total efficiency of this new protocol is double that of the original one. With a low noise quantum channel, this protocol can be used for transmitting a secret message. At present, this protocol is good for generating a private key efficiently.

关键词: quantum communication, quantum cryptography

Abstract: This paper presents a simple way for an eavesdropper to eavesdrop freely the secret message in the experimental realization of quantum communication protocol proposed by Beige et al (2002 Acta Phys. Pol. A 101 357). Moreover, it introduces an efficient quantum secure communication protocol based on a publicly known key with decoy photons and two biased bases by modifying the original protocol. The total efficiency of this new protocol is double that of the original one. With a low noise quantum channel, this protocol can be used for transmitting a secret message. At present, this protocol is good for generating a private key efficiently.

Key words: quantum communication, quantum cryptography

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

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