Eavesdropping on the two-way quantum communication protocols with invisible photons
Eavesdropping on the two-way quantum communication protocols with invisible photons
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DOI：
10.1016/j.physleta.2005.10.050
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发表时间：
2006-02-20
影响因子：
2.6
通讯作者：
Cai, QY
中科院分区：
文献类型：
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作者：
Cai, QY
量子通信协议的关键问题是其安全性。在这封信中，我们表明，当窃听者使用不可见光子窃听通信时，所有确定性和直接双向量子通信协议（有时称为乒乓（PP）协议）都是不安全的。通过我们的不可见光子窃听（IPE）方案，窃听者可以获得通信的完整信息，并且被检测到的风险为零。我们证明该 IPE 方案可以用现有技术进行实验实施。最后，提出了PP通信协议安全性的可能改进方案。 (c) 2005 Elsevier B.V. 保留所有权利。
The crucial issue of quantum communication protocol is its security. In this Letter, we show that all the deterministic and direct two-way quantum communication protocols, sometimes called ping-pong (PP) protocols, are insecure when an eavesdropper uses the invisible photon to eavesdrop on the communication. With our invisible photon eavesdropping (IPE) scheme, the eavesdropper can obtain full information of the communication with zero risk of being detected. We show that this IPE scheme can be implemented experimentally with current technology. Finally, a possible improvement of PP communication protocols security is proposed. (c) 2005 Elsevier B.V. All rights reserved.