With the rapid improvement of quantum computing technology, quantum key distribution(QKD) is a hot technology. Information reconciliation is a key step of QKD which is useful for correcting key error. Classical message interaction is necessary in a practical information reconciliation scheme, which makes the efficiency of these protocols decreased. Therefore, some one-way information reconciliation schemes based on low-density parity-check(LDPC) codes and polar codes are proposed. Here we propose a concatenated method of IR schemes which can achieve any given error rate level without the need of interactions. Compared with the one-way IR schems based on LDPC codes and polar codes, the IR schemes based on the proposed concatenated method can get lower bit error rates after error correction, which can also reduce the communication delay and system complexity of QKD, improve the final key generation rate and enhance the practicability of QKD system.

中文翻译：

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量子密钥分发的单向信息协调方案

随着量子计算技术的飞速发展，量子密钥分发（QKD）成为一项热门技术。信息核对是 QKD 的关键步骤，有助于纠正关键错误。在实际的信息协调方案中需要经典的消息交互，这使得这些协议的效率降低。因此，提出了一些基于低密度奇偶校验(LDPC)码和极性码的单向信息协调方案。在这里，我们提出了一种 IR 方案的级联方法，它可以在不需要交互的情况下实现任何给定的错误率水平。与基于 LDPC 码和极性码的单向 IR 方案相比，基于所提出的级联方法的 IR 方案在纠错后可以获得更低的误码率，