典型文献
Practical security analysis of continuous-variable quantum key distribution with an unbalanced heterodyne detector
文献摘要：
When developing a practical continuous-variable quantum key distribution(CVQKD),the detector is necessary at the receiver's side.We investigate the practical security of the CVQKD system with an unbalanced heterodyne detector.The results show that unbalanced heterodyne detector introduces extra excess noise into the system and decreases the lower bound of the secret key rate without awareness of the legitimate communicators,which leaves loopholes for Eve to attack the system.In addition,we find that the secret key rate decreases more severely with the increase in the degree of imbalance and the excess noise induced by the imbalance is proportional to the intensity of the local oscillator(LO)under the same degree of imbalance.Finally,a countermeasure is proposed to resist these kinds of effects.
文献关键词：
中图分类号：
作者姓名：
Lingzhi Kong;Weiqi Liu;Fan Jing;Chen He
作者机构：
College of Information Science and Technology,Northwest University,Xi'an 710127,China
文献出处：
引用格式：
[1]Lingzhi Kong;Weiqi Liu;Fan Jing;Chen He-.Practical security analysis of continuous-variable quantum key distribution with an unbalanced heterodyne detector)[J].中国物理B（英文版）,2022(07):135-142
A类：
CVQKD,communicators
B类：
Practical,security,analysis,continuous,variable,quantum,key,distribution,unbalanced,heterodyne,detector,When,developing,practical,necessary,receiver,side,We,investigate,system,results,show,that,introduces,extra,excess,noise,into,decreases,lower,bound,secret,rate,without,awareness,legitimate,which,leaves,loopholes,Eve,attack,In,addition,find,more,severely,increase,degree,imbalance,induced,by,proportional,intensity,local,oscillator,LO,under,same,Finally,countermeasure,proposed,resist,these,kinds,effects
AB值：
0.5419
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