Improving the Security of Controlled Quantum Secure Direct Communication by Using Four Particle Cluster States Against an Attack with Fake Entangled Particles
Improving the Security of Controlled Quantum Secure Direct Communication by Using Four Particle Cluster States Against an Attack with Fake Entangled Particles
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DOI：
10.1007/s10773-010-0543-7
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发表时间：
2011-02
影响因子：
1.4
通讯作者：
Yuguang Yang;Hai-Ping Chai;Yi-Wei Teng;Q. Wen
中科院分区：
文献类型：
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作者：
Yuguang Yang;Hai-Ping Chai;Yi-Wei Teng;Q. Wen
受控量子安全直接通信协议（Zhang等人，Int.J.Theor. 48：2971-2976，2009）。Zhang等人的目标是，Alice和Bob之间的通信的成功实现需要控制器Charlie的合作。然而，我们表明，控制器查理的作用可以被排除在不知不觉中。利用虚假的纠缠粒子和贝尔测量，产生初始信号的不诚实的鲍勃可以在未经查理允许的情况下引出爱丽丝的秘密信息。提出了一种可能的改进方案。
A controlled quantum secure direct communication protocol (Zhang et al. Int. J. Theor. Phys. 48:2971–2976, 2009) by using four particle cluster states was proposed recently. The aim of Zhang et al. was that the successful realization of communication between Alice and Bob needed the cooperation of a controller, Charlie. However, we show that the controller Charlie’s role could be excluded unknowingly. Using fake entangled particles and Bell measurement, the dishonest Bob who generates the initial signals can elicit Alice’s secret message without the permission of Charlie. A possible improvement of the protocol is proposed.