4.7 Article

Shannon-limit approached information reconciliation for quantum key distribution

期刊

QUANTUM INFORMATION PROCESSING
卷 20, 期 3, 页码 -

出版社

SPRINGER
DOI: 10.1007/s11128-020-02919-8

关键词

Quantum key distribution; Information reconciliation; Shannon-limit; Polar codes

资金

  1. National Natural Science Foundation of China [61972410]
  2. research plan of National University of Defense Technology [ZK19-13]

向作者/读者索取更多资源

A Shannon-limit approached (SLA) information reconciliation (IR) scheme is proposed in this article, which effectively reduces the frame error rate and improves efficiency through two phases of processing.
Information reconciliation (IR) corrects the errors in sifted keys and ensures the correctness of quantum key distribution (QKD) systems. Polar codes-based IR schemes can achieve high reconciliation efficiency; however, the incidental high frame error rate decreases the secure key rate of QKD systems. In this article, we propose a Shannon-limit approached (SLA) IR scheme, which mainly contains two phases: the forward reconciliation phase and the acknowledgment reconciliation phase. In the forward reconciliation phase, the sifted key is divided into sub-blocks and performed with the improved block checked successive cancellation list decoder of polar codes. Afterward, only the failure corrected sub-blocks perform the additional acknowledgment reconciliation phase, which decreases the frame error rate of the SLA IR scheme. The experimental results show that the overall failure probability of SLA IR scheme is decreased to 10-8 and the efficiency is improved to 1.091 with the IR block length of 128 Mb. Furthermore, the efficiency of the proposed SLA IR scheme is 1.055, approached to Shannon limit, when the quantum bit error rate is 0.02 and the input scale of 1 Gb, which is hundred times larger than the state-of-the-art implemented polar codes-based IR schemes.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据