论文标题
量子密钥分布的安全结合分析具有不均匀的隐私放大的随机种子
Secure bound analysis of quantum key distribution with non-uniform random seed of privacy amplification
论文作者
论文摘要
精确的量子密钥分布（QKD）安全界分析对于实际QKD系统至关重要。在现有的安全约束分析中，未考虑随机数种子均匀性种子对隐私扩增的影响。在本文中，我们提出并证明了基于最小透气的量子剩余的哈希引理，其随机数种子不均匀，并在此基础上提供了具有不均匀的随机数种子的精确QKD安全结合分析。我们以两件Decoy BB84协议为例，以模拟随机数种子均匀性对QKD系统安全结合的影响。实验结果表明，当随机数生成器的平均最小内侧镜头低于0.95时，QKD系统的安全结合将受到严重影响。
Precise quantum key distribution (QKD) secure bound analysis is essential for practical QKD systems. The effect of uniformity of random number seed for privacy amplification is not considered in existing secure bound analysis. In this paper, we propose and prove the quantum leftover hash lemma with non-uniform random number seeds based on the min-entropy, and we give a precise QKD secure bound analysis with non-uniform random number seeds on this basis. We take the two-decoy BB84 protocol as an example to simulate the effect of random number seed uniformity on the secure bound of a QKD system. The experimental results indicate that when the average min-entropy of the random number generator is below 0.95, the secure bound of a QKD system will be seriously affected.
