摘要
量子密钥分发(Quantum Key Distribution,QKD)可以利用量子力学的性质使通信双方共享随机的、安全的密钥,是保证通信安全的重要方法之一。但安全成码率和通信距离是其实用化的瓶颈。本文在分析纠缠提纯协议的基础上,将双向纠缠提纯协议应用于BB84协议和TF-QKD协议中,讨论了其应用方式对协议性能的影响。分析表明,双向纠缠提纯协议在降低比特误码率和相位误码率的条件下扩展了通信距离,具有重要的理论和应用价值。
Quantum Key Distribution(QKD) utilizes the properties of quantum mechanics to share random and secure keys between the comnunication parties,and is one of the important methods to ensurecommunication security.However,practical application of the QKD is limited by the bottlenecks of security key ratc and communication distance.Based on the analysis of the entanglement purification protocol,this paper presents applying the two-way entanglement purification protocol to the BB84 protocoland TF-QKD protocol,and discusses the impact of the application form on the performance of the proto-col.Analysis shows that the two-way entanglement purification protocol extends the communication distance while reducing the bit error rate and phase error rate,and has important theoretical and application values.
作者
刘冰
刘欣瑞
贾炜光
LIU Bing;LIU Xinrui;JIA Weiguang(Beijing Electronic Science and Technology Institute,Beijing 100070,P.R.China)
出处
《北京电子科技学院学报》
2021年第2期17-24,共8页
Journal of Beijing Electronic Science And Technology Institute
基金
北京电子科技学院一流学科建设项目“量子密码课程建设”(项目编号:1201011)。
关键词
量子密钥分发协议
纠缠提纯协议
通信距离
quantum key distribution protocol
entanglement purification protocol
communication dis tance
