Author:
Zhao Nan ,Pei Chang-Xing ,Liu Dan ,Quan Dong-Xiao ,Sun Xiao-Nan ,
Abstract
Quantum state in the channel is affected by several factors, which will bring detection error and make secure threshold of quantum distribution protocol unable to judge whether eavesdropping exists. We analyze the factors in real quantum channel, which affects the quantum state, develop a channel model, and derive a judging eavesdrop secure threshold formula of BB84 protocol based on an imperfect channel. Through calculating and simulating, the formula is proved to be more accurate to estimate the secure threshold of the BB84 protocol and more effective to judge eavesdropping. Meanwhile, this method can improve the security and the efficiency of key distribution.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Reference20 articles.
1. Bennett C H, Brassard G 1984 Int. Conference on Computers, Systems, and Signal Processing (Bangalore: IEEE) pp 175—179
2. Bennett C H, Shor P W 1998 IEEE Trans.Inform.Theory 44 2724
3. Holevo A S 1973 J.Multivar.Anal. vol.3,pp 337—394
4. Yuen H P, Kennedy R S, Lax M 1975 Trans.Inform.Theory vol.IT-21, pp125—134
5. Klimovitch G V 2001 Prov.IEEE Int.Symp.Information Theory(Washington DC) p123
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献