Application of practical noiseless linear amplifier in no-switching   continuous-variable quantum cryptography

doi:10.1007/s11128-015-1095-9

CORC > 北京大学 > 信息科学技术学院

	Application of practical noiseless linear amplifier in no-switching continuous-variable quantum cryptography
	Zhang, Yichen ; Yu, Song ; Guo, Hong
刊名	QUANTUM INFORMATION PROCESSING
	2015
关键词	Quantum cryptography Continuous-variable quantum key distribution Practical noiseless linear amplifier KEY DISTRIBUTION ENTANGLEMENT INFORMATION STATES AMPLIFICATION DISTILLATION
DOI	10.1007/s11128-015-1095-9
英文摘要	We propose a modified no-switching continuous-variable quantum key distribution protocol by employing a practical noiseless linear amplifier at the receiver to increase the maximal transmission distance and tolerable excess noise. A security analysis is presented to derive the secure bound of the protocol in presence of a Gaussian noisy lossy channel. Simulation results show that the modified protocol can not only transmit longer distance and tolerate more channel excess noise than the original protocol, but also distribute more secure keys in the enhanced region where we define a critical point to separate the enhanced and degenerative region. This critical point presents the condition of using a practical noiseless linear amplifier in the no-switching continuous-variable quantum cryptography, which is meaningful and instructive to implement a practical experiment.; National Basic Research Program of China (973 Pro-gram) [2012CB3156052]; National Science Fund for Distinguished Young Scholars of China [61225003]; State Key Program of National Natural Science of China [61531003]; Fund of State Key Laboratory of Information Photonics and Optical Communications; Fundamental Research Funds for the Central Universities; SCI(E); ARTICLE; leo.yichen.zhang@gmail.com; yusong@bupt.edu.cn; 11; 4339-4349; 14
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415395]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Zhang, Yichen,Yu, Song,Guo, Hong. Application of practical noiseless linear amplifier in no-switching continuous-variable quantum cryptography[J]. QUANTUM INFORMATION PROCESSING,2015.
APA	Zhang, Yichen,Yu, Song,&Guo, Hong.(2015).Application of practical noiseless linear amplifier in no-switching continuous-variable quantum cryptography.QUANTUM INFORMATION PROCESSING.
MLA	Zhang, Yichen,et al."Application of practical noiseless linear amplifier in no-switching continuous-variable quantum cryptography".QUANTUM INFORMATION PROCESSING (2015).