论文标题
广义高维量子键分布的紧密有限键分析
Tight finite-key analysis for generalized high-dimensional quantum key distribution
论文作者
论文摘要
由于能够容忍高误差率并每次试验产生更多关键位，因此高维量子密钥分布引起了广泛的兴趣。尽管高维量子键分布取得了长足进展，但理论和实验之间仍然存在一些差距。其中之一是，秘密密钥的安全性在很大程度上取决于发射信号的数量。到目前为止，现有的安全性证明仅适用于无限或无数发出的信号。在这里，通过介绍基于平滑熵的不确定性关系的“关键分类”和开发相关技术的想法，我们提出了一个适用于普通高维量子键分布协议的紧密有限键分析。从我们的理论中受益，具有有限资源的高维量子密钥分布协议在实验上可行。
Due to the capability of tolerating high error rate and generating more key bits per trial, high-dimensional quantum key distribution attracts wide interest. Despite great progresses in high-dimensional quantum key distribution, there are still some gaps between theory and experiment. One of these is that the security of the secret key heavily depends on the number of the emitted signals. So far, the existing security proofs are only suitable in the case with an infinite or unpractically large number of emitted signals. Here, by introducing the idea of "key classification" and developing relevant techniques based on the uncertainty relation for smooth entropies, we propose a tight finite-key analysis suitable for generalized high-dimensional quantum key distribution protocols. Benefitting from our theory, high-dimensional quantum key distribution protocols with finite resources become experimentally feasible.
