Performance improvement of continuous-variable quantum key distribution via photon subtraction

被引：101
|
作者：
Huang, Peng [1 ]
He, Guangqiang [1 ]
Fang, Jian [1 ]
Zeng, Guihua [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Key Lab Nav & Locat Based Serv, Shanghai 200240, Peoples R China
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ENTANGLEMENT;
D O I：
10.1103/PhysRevA.87.012317
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
It has been found that non-Gaussian operations can be applied to increase and distill entanglement between Gaussian entangled states. We propose here a method to improve the performance of entanglement-based (EB) continuous-variable quantum-key-distribution protocol by using the non-Gaussian operation, in particular, the subtraction operation, which can be implemented under current technology easily. Security analysis shows that the subtraction operation can well increase the secure distance and tolerable excess noise of the EB scheme and also the corresponding prepare-and-measure scheme. DOI: 10.1103/PhysRevA.87.012317
引用
收藏
页数：7
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