论文标题
对量子键分布的安全评估弱基础选择缺陷
Security evaluation of quantum key distribution with weak basis-choice flaws
论文作者
论文摘要
量子密钥分布（QKD）可以在两个远程各方之间共享无条件的安全密钥，但是理论和实践之间的偏差将破坏生成的密钥的安全性。在本文中，我们用弱基选择缺陷评估了QKD的安全性，其中爱丽丝和鲍勃使用的随机位受EVE的弱控制。基于li \ textit {等} [sci的定义。 Rep。5，16200（2015）]和GLLP的分析，我们获得了一个紧密而分析的结合，以估算单个光子源和弱相干源的相误差和关键率。我们的方法在很大程度上提高了原始方法的关键率。最后，我们使用实用的商业设备调查并确认BB84-QKD的安全性。
Quantum key distribution (QKD) can share an unconditional secure key between two remote parties, but the deviation between theory and practice will break the security of the generated key. In this paper, we evaluate the security of QKD with weak basis-choice flaws, in which the random bits used by Alice and Bob are weakly controlled by Eve. Based on the definition of Li \textit{et al.} [Sci. Rep. 5, 16200 (2015)] and GLLP's analysis, we obtain a tight and analytical bound to estimate the phase error and key rate for both the single photon source and the weak coherent source. Our approach largely increases the key rate from that of the original approach. Finally, we investigate and confirm the security of BB84-QKD with a practical commercial devices.
