论文标题
通过源和检测缺陷的安全量子密钥分布的实验研究
Experimental study of secure quantum key distribution with source and detection imperfections
论文作者
论文摘要
由量子物理原理保证的量子密钥分布（QKD）是对未来安全信息和通信技术的有前途的解决方案。但是，设备缺陷损害了现实生活中QKD系统的安全性，从而限制了QKD的广泛部署。这项研究报告了一个诱饵状态BB84 QKD实验，该实验既考虑源和检测缺陷。特别是，通过应用系统的性能分析，我们实现了高达75公里的光纤链接的严格有限键安全性。此外，我们的研究认为，与大多数以前的实验相比，我们认为设备的缺陷更大，并且提出的理论可以扩展到其他离散可变QKD系统。这些功能构成了用不完善的实用设备确保QKD的关键步骤。
The quantum key distribution (QKD), guaranteed by the principle of quantum physics, is a promising solution for future secure information and communication technology. However, device imperfections compromise the security of real-life QKD systems, restricting the wide deployment of QKD. This study reports a decoy-state BB84 QKD experiment that considers both source and detection imperfections. In particular, we achieved a rigorous finite-key security bound over fiber links of up to 75 km by applying a systematic performance analysis. Furthermore, our study considers more device imperfections than most previous experiments, and the proposed theory can be extended to other discrete-variable QKD systems. These features constitute a crucial step toward securing QKD with imperfect practical devices.
