Entanglement concentration for W-type entangled coherent states

被引：0

作者：

盛宇波 ^{[1
,2
]}

刘炯 ^{[1
,2
]}

赵圣阳 ^{[1
,2
]}

王磊 ^{[1
,2
]}

周澜 ^{[1
,3
]}

机构：

[1] Key Laboratory of Broadband Wireless Communication and Sensor Network Technology, Nanjing University of Posts and Telecommunications,Ministry of Education

[2] Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications

[3] College of Mathematics and Physics, Nanjing University of Posts and Telecommunications

来源：

Chinese Physics B | 2014年 / 23卷 / 08期

关键词：

quantum communication and computation; entanglement concentration; coherent state;

D O I：

暂无

中图分类号：

O413.1 [量子力学（波动力学、矩阵力学）];

学科分类号：

070205 ; 0809 ;

摘要：

An entangled coherent state(ECS) is one type of entanglement, which is widely discussed in the application of quantum information processing(QIP). In this paper, we propose an entanglement concentration protocol(ECP) to distill the maximally entangled W-type ECS from the partially entangled W-type ECS. In the ECP, we adopt the balanced beam splitter(BS) to make the parity check measurement. Our ECP is quite different from the conventional ECPs. After performing the ECP, not only can we obtain the maximally entangled ECS with some success probability, but also we can increase the amplitude of the coherent state. Therefore, it is especially useful in long-distance quantum communication, if the photon loss is considered.

引用

页码：273 / 277

页数：5

共 9 条

[1] An entanglement concentration protocol for cluster states [J].