中国物理B ›› 2011, Vol. 20 ›› Issue (7): 70305-070305.doi: 10.1088/1674-1056/20/7/070305

• GENERAL • 上一篇    下一篇

Eavesdropping on the quantum dialogue protocol in lossy channel

刘恒1, 吕辉1, 张秀兰2   

  1. (1)Department of Mathematics and Computer Science, Huainan Normal University, Huainan 232038, China; (2)Department of Physics and Electronic Information, Huainan Normal University, Huainan 232038, China
  • 收稿日期:2011-02-10 修回日期:2011-03-07 出版日期:2011-07-15 发布日期:2011-07-15
  • 基金资助:
    Project supported by the Natural Science Foundation of the Anhui Higher Education Institutions of China (Grant No. KJ2011Z359).

Eavesdropping on the quantum dialogue protocol in lossy channel

Liu Heng(刘恒)a)†, Zhang Xiu-Lan(张秀兰) b), and Lü Hui(吕辉)a)   

  1. a Department of Mathematics and Computer Science, Huainan Normal University, Huainan 232038, China; b Department of Physics and Electronic Information, Huainan Normal University, Huainan 232038, China
  • Received:2011-02-10 Revised:2011-03-07 Online:2011-07-15 Published:2011-07-15
  • Supported by:
    Project supported by the Natural Science Foundation of the Anhui Higher Education Institutions of China (Grant No. KJ2011Z359).

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摘要： We present an improved eavesdropping scheme on the quantum dialogue protocol in lossy channel, which is based on the strategies of Wójcik [Phys. Rev. Lett. 90 157901 (2003)] and ZML [Phys. Lett. A 333 46 (2004)] attack schemes. We show that our attack scheme doubles the domain of Eve's eavesdropping and Eve can gain more information of the communication with less risk of being detected. Finally, a possible improvement for the dialogue protocol security is proposed.

Abstract: We present an improved eavesdropping scheme on the quantum dialogue protocol in lossy channel, which is based on the strategies of Wójcik [Phys. Rev. Lett. 90 157901 (2003)] and ZML [Phys. Lett. A 333 46 (2004)] attack schemes. We show that our attack scheme doubles the domain of Eve's eavesdropping and Eve can gain more information of the communication with less risk of being detected. Finally, a possible improvement for the dialogue protocol security is proposed.

Key words: quantum dialogue, eavesdropper, transmission efficiency

中图分类号:  (Quantum communication)

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