论文标题
通过关节数据处理，较高的测量设备与设备设备的量子密钥分布更高
Higher key rate of measurement-device-independent quantum key distribution through joint data processing
论文作者
论文摘要
我们提出了一种称为双扫描方法的方法，以急剧提高测量设备独立量子密钥分布（MDI-QKD）的关键率。在该方法中，同时扫描了两个参数，以严格估计单光对的计数和相位翼误差率共同估计。数值结果表明，这项工作中的方法可以在典型的实验设置中提高$ 35 \％-280 \％$的关键率。此外，我们研究了使用所有参数（包括源参数和失败概率参数），对称通道或非对称通道的所有参数的MDI-QKD协议的优化。与仅具有源参数的优化结果相比，全参数优化方法可以提高关键利率约$ 10 \％$。
We propose a method named as double-scanning method, to improve the key rate of measurement-device-independent quantum key distribution (MDI-QKD) drastically. In the method, two parameters are scanned simultaneously to tightly estimate the counts of single-photon pairs and the phase-flip error rate jointly. Numerical results show that the method in this work can improve the key rate by $35\%-280\%$ in a typical experimental set-up. Besides, we study the optimization of MDI-QKD protocol with all parameters including the source parameters and failure probability parameters, over symmetric channel or asymmetric channel. Compared with the optimized results with only the source parameters, the all-parameter-optimization method could improve the key rate by about $10\%$.
