One-way information reconciliation schemes of quantum key distribution  

作　　者：Li Yang Hua Dong Zhao Li 

机构地区：[1]State Key Laboratory of Information Security,Institute of Information Engineering,Chinese Academy of Sciences,Beijing 100093,China [2]State Key Laboratory of Cryptology,P.O.Box 5159,Beijing 100878,China [3]School of Cyber Security,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Cybersecurity》2019年第1期380-392,共13页网络空间安全科学与技术（英文）

基　　金：This research was funded by National Natural Science Foundation of China under Grant No.61672517;National Cryptography Development Fund under Grant No.MMJJ20170108.

摘　　要：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.

关 键 词：Quantum key distribution Information reconciliation Concatenated scheme One-way communication 

分 类 号：TN9[电子电信—信息与通信工程]