科研之友
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摘要
Very recently, Yin and Tang proposed a two-step efficient quantum dialogue (QD) protocol with three-particle entangled W state (Yin and Tang Int. J. Theor. Phys. 53, 2760 2014). In this Letter, the security loophole named information leakage, i.e., anybody else can elicit partial information of secret messages without any active attack, is discovered and deduced in detail. Furthermore, the essence of information leakage is studied from the viewpoint of Holevo theorem.
- 出版日期2015-6
- 单位浙江工商大学
