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Chin. Phys. B, 2011, Vol. 20(7): 070305    DOI: 10.1088/1674-1056/20/7/070305
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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)
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
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.
Keywords:  quantum dialogue      eavesdropper      transmission efficiency  
Received:  10 February 2011      Revised:  07 March 2011      Accepted manuscript online: 
PACS:  03.67.Hk (Quantum communication)  
Fund: Project supported by the Natural Science Foundation of the Anhui Higher Education Institutions of China (Grant No. KJ2011Z359).

Cite this article: 

Liu Heng(刘恒), Zhang Xiu-Lan(张秀兰), and Lü Hui(吕辉) Eavesdropping on the quantum dialogue protocol in lossy channel 2011 Chin. Phys. B 20 070305

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