论文标题
离散相融合的测量设备与独立的量子键分布
Discrete-phase-randomized measurement-device-independent quantum key distribution
论文作者
论文摘要
无关测量设备的量子键分布除去量子密码学中的所有探测器侧攻击，同时，固定距离增加了一倍。但是，来源仍然容易受到各种攻击的攻击。特别是，在实验实施中通常无法实现源侧的连续相随机化假设，并且可能会打开漏洞。在这项工作中，我们首先表明，在测量设备不依赖的量子密钥分布中确实存在不完美的相位随机化的漏洞，这是通过提供具体攻击的。然后，我们提出了一个离散的阶段测量设备与量子键分布方案，作为关闭此源端漏洞的解决方案。
Measurement-device-independent quantum key distribution removes all detector-side attacks in quantum cryptography, and in the meantime doubles the secure distance. The source side, however, is still vulnerable to various attacks. In particular, the continuous phase randomization assumption on the source side is normally not fulfilled in experimental implementation and may potentially open a loophole. In this work, we first show that indeed there are loopholes for imperfect phase randomization in measurement-device-independent quantum key distribution by providing a concrete attack. Then we propose a discrete-phase-randomized measurement-device-independent quantum key distribution protocol as a solution to close this source-side loophole.
