An improved two-way continuous-variable quantum key distribution   protocol with added noise in homodyne detection

doi:10.1088/0953-4075/46/8/085501

CORC > 北京大学 > 信息科学技术学院

	An improved two-way continuous-variable quantum key distribution protocol with added noise in homodyne detection
	Sun, Maozhu ; Peng, Xiang ; Guo, Hong
刊名	journal of physics b atomic molecular and optical physics
	2013
关键词	GAUSSIAN CHANNELS ENTANGLEMENT CRYPTOGRAPHY CAPACITY STATES
DOI	10.1088/0953-4075/46/8/085501
英文摘要	We propose an improved two-way continuous-variable quantum key distribution (CV QKD) protocol by adding proper random noise on the receiver's homodyne detection, the security of which is analysed against general collective attacks. The simulation result under the collective entangling cloner attack indicates that despite the correlation between two-way channels decreasing the secret key rate relative to the uncorrelated channels slightly, the performance of the two-way protocol is still far beyond that of the one-way protocols. Importantly, the added noise in detection is beneficial for the secret key rate and the tolerable excess noise of this two-way protocol. With the reasonable reconciliation efficiency of 90%, the two-way CV QKD with added noise allows the distribution of secret keys over 60 km fibre distance.; Optics; Physics, Atomic, Molecular & Chemical; SCI(E); EI; 3; ARTICLE; 8; 46
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/291767]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Sun, Maozhu,Peng, Xiang,Guo, Hong. An improved two-way continuous-variable quantum key distribution protocol with added noise in homodyne detection[J]. journal of physics b atomic molecular and optical physics,2013.
APA	Sun, Maozhu,Peng, Xiang,&Guo, Hong.(2013).An improved two-way continuous-variable quantum key distribution protocol with added noise in homodyne detection.journal of physics b atomic molecular and optical physics.
MLA	Sun, Maozhu,et al."An improved two-way continuous-variable quantum key distribution protocol with added noise in homodyne detection".journal of physics b atomic molecular and optical physics (2013).