Efficient entanglement concentration for arbitrary less-entangled NOON states

被引：47
|
作者：
Zhou, Lan [1 ,2 ]
Sheng, Yu-Bo [2 ,3 ]
Cheng, Wei-Wen [2 ,3 ]
Gong, Long-Yan [1 ,2 ,3 ]
Zhao, Sheng-Mei [2 ,3 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Coll Math & Phys, Nanjing 210003, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Inst Signal Proc Transmiss, Nanjing 210003, Peoples R China
[3] Nanjing Univ Posts & Telecommun, Key Lab Broadband Wireless Commun & Sensor Networ, Minist Educ, Nanjing 210003, Peoples R China
来源：
QUANTUM INFORMATION PROCESSING | 2013年 / 12卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Entanglement concentration; NOON state; Cross-Kerr nonlinearity; QUANTUM ENTANGLEMENT; BELL THEOREM; KERR NONLINEARITY; CRYPTOGRAPHY; COMPUTATION; COMMUNICATION; TELEPORTATION; PHOTONS; LIMIT;
D O I：
10.1007/s11128-012-0472-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We put forward an efficient entanglement concentration protocol (ECP) for arbitrary less-entangled NOON state. In the protocol, we resort to the weak cross-Kerr nonlinearity to complete this task. Different from other ECPs, this protocol can be reused to get a high success probability. We do not need to know the exact coefficients of the initial state. Moreover, we even do not need to know the exact photon number of the initial NOON state. This protocol may be useful and convenient in the current quantum information processing.
引用
收藏
页码：1307 / 1320
页数：14
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