论文标题
附加量子密钥分布的信息对帐
Appending Information Reconciliation for Quantum Key Distribution
论文作者
论文摘要
纠正筛选键中错误的信息对帐（IR）直接确定量子密钥分布（QKD）系统的安全键率和链路距离。在本文中，我们根据极地代码提出了一个附加信息对帐（AIR）方案，该方案同时逐渐披露具有高误差概率的极化通道的位值，从而实现了高效率和超低故障概率。实验结果表明，与最先进的基于极地代码的IR计划相比，提议的空气方案的效率更接近香农限制，其总体故障概率左右左右1E-8，尤其是在较小的块大小时进行。此外，当块大小为1 GB并且量子位错误率为0.02时，提议的空气方案的效率为1.046。因此，提出的空气方案可以进一步消除QKD系统理论和实施之间的性能差距。
Information reconciliation (IR), which corrects the errors in the sifted keys, directly determines the secure key rate and the link distance of quantum key distribution (QKD) systems. In this article, we propose an appending information reconciliation (AIR) scheme based on polar codes, which achieves high efficiency and ultra-low failure probability simultaneously, by gradually disclosing the bit values of the polarized channels with high error probability. The experimental results show that the efficiency of the proposed AIR scheme is closer to the Shannon limit, compared with the state-of-the-art implemented polar codes-based IR schemes, with the overall failure probability around 1E-8, especially when performed with smaller block sizes. Moreover, the efficiency of the proposed AIR scheme is 1.046, when the block size is 1 Gb and the quantum bit error rate of 0.02. Therefore, the proposed AIR scheme can further eradicate the performance gap between theory and implementation for QKD systems.
