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arXiv quant-ph/0411004quant-ph
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诱骗态量子密钥分发

Decoy State Quantum Key Distribution

Hoi-Kwong Lo, Xiongfeng Ma, Kai Chen

摘要:

量子密钥分发一直是人们研究的热点。在实验上,已成功地在150 km的商用电信光纤上进行了量子密钥分发。量子密钥分发的关键问题是其安全性。不幸的是,由于现实生活中的缺陷,所有最近的实验原则上都是不安全的。在这里,我们提出了一种方法,可以第一次通过使用基本相同的硬件使大多数实验安全。我们的方法是使用诱饵状态来检测窃听攻击。因此,我们拥有两个世界中最好的东西-享受由物理学基本定律保证的无条件安全,但大大超过文献中报道的一些最好的实验性能。

英文摘要:

There has been much interest in quantum key distribution. Experimentally, quantum key distribution over 150 km of commercial Telecom fibers has been successfully performed. The crucial issue in quantum key distribution is its security. Unfortunately, all recent experiments are, in principle, insecure due to real-life imperfections. Here, we propose a method that can for the first time make most of those experiments secure by using essentially the same hardware. Our method is to use decoy states to detect eavesdropping attacks. As a consequence, we have the best of both worlds--enjoying unconditional security guaranteed by the fundamental laws of physics and yet dramatically surpassing even some of the best experimental performances reported in the literature.

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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