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arXiv quant-ph/0501171quant-ph
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基于Bell定理的确定性高效量子密码

Deterministic and Efficient Quantum Cryptography Based on Bell's Theorem

Zeng-Bing Chen, Qiang Zhang, Xiao-Hui Bao, J. Schmiedmayer, Jian-Wei Pan

摘要:

我们提出了一种新的基于双纠缠的量子密码协议,是高效的和确定性的。该提案使用在偏振和时间自由度上都具有纠缠的光子对;每次测量中,两个通信方都记录了一个光子,可以建立一个且只有一个完美的相关性,从而确定性地创建一个密钥位。通过违反局部真实性可以检测到Ehrman dropping。该协议的一个变体显示出更高的安全性,类似于六状态协议,在个人攻击下。我们的计划允许一个强大的实现在目前的技术。

英文摘要:

We propose a novel double-entanglement-based quantum cryptography protocol that is both efficient and deterministic. The proposal uses photon pairs with entanglement both in polarization and in time degrees of freedom; each measurement in which both of the two communicating parties register a photon can establish one and only one perfect correlation and thus deterministically create a key bit. Eavesdropping can be detected by violation of local realism. A variation of the protocol shows a higher security, similarly to the six-state protocol, under individual attacks. Our scheme allows a robust implementation under current technology.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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