基于奇偶校验极化码的量子密钥纠错方法  

Quantum key error correction method based on parity check polar code

作　　者：罗贤俊 林泽洪 刘尉悦[1] LUO Xianjun;LIN Zehong;LIU Weiyue(Faculty of Information Science and Engineering,Ningbo University,Ningbo Zhejiang 315211,China;School of Electronics and Information,Lishui Vocational and Technical College,Lishui Zhejiang 323000,China)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]丽水职业技术学院电子信息学院,浙江丽水323000

出　　处：《光通信技术》2024年第6期104-107,共4页Optical Communication Technology

基　　金：浙江省自然科学基金项目(LY21F050003、LY23F010003)资助。

摘　　要：为了提升量子密钥分发(QKD)中密钥纠错的性能,提出了一种基于奇偶校验极化码的量子密钥纠错方法。该方法在密钥纠错过程中引入了奇偶校验极化码,并优化了奇偶校验编码策略,利用密钥极化编码后生成的奇偶校验信息完成密钥纠错。仿真结果表明:与现有的基于极化码的密钥纠错方法相比,该方法可以在相同的量子比特误码率下获得更高的纠错效率;当实际QKD实验中的量子比特误码率为0.01048时,其纠错效率达到1.34,安全成码率可达1319 b/s。To enhance the error correction performance of quantum key distribution(QKD),a quantum key error correction method based on parity check polar codes is proposed.This method introduces parity check polar codes into the key error correction process and optimizes the parity check encoding strategy.It uses the parity check information generated by key polar encoding to complete the key error correction.The simulation results show that compared with the existing polar code-based key error correction method,this method can achieve higher error correction efficiency at the same quantum bit error rate,when the actual QKD experiment's quantum bit error rate is 0.01048,its error correction efficiency reaches 1.34,and the secure coding rate can reach 1319 b/s.

关 键 词：量子光学 奇偶校验 极化码 误码纠错 纠错效率 

分 类 号：TN918.1[电子电信—通信与信息系统]