一种基于无相互作用测量的高效密钥分配方案

An Efficient Secret Key Distribution Scheme Based on Interaction-Free Measurement

研究了别人提出的一种基于无相互作用测量的量子密码分配方案 ,然后分析了该方案限制密钥传送效率的三个因素 ,提出了自己的改进方法。考虑了两种窃听攻击 ,并讨论了该方法如何防止这些窃听 。

We first introduce a conventional quantum key distribution model based on interaction free measurement.After analysing that model,we give a more efficient new scheme.The security against two intercept eavesdropping strategies in ideal channel and device is shown.At last,we introduce a technique called privacy amplification to distil a high secret key subsequence from the original secret key sequence.