Remote Quantum Information Concentration Via Weak Cross-Kerr Nonlinearity

被引：4
|
作者：
Rui, Pinshu [1 ,2 ]
Zhang, Wen [2 ]
Liao, Yanlin [2 ]
Zhang, Ziyun [2 ]
机构：
[1] Anhui Xinhua Univ, Hefei 230088, Peoples R China
[2] Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2016年 / 55卷 / 11期
基金：
美国国家科学基金会;
关键词：
Remote quantum information concentration (RQIC); Quantum nondemolition detector; Bound entangled state; SECURE DIRECT COMMUNICATION; EFFICIENT ENTANGLEMENT CONCENTRATION; BELL-STATE MEASUREMENT; HORNE-ZEILINGER STATE; BOUND ENTANGLEMENT; SINGLE PHOTONS; KEY DISTRIBUTION; QUBIT STATE; W-STATE; PROTOCOL;
D O I：
10.1007/s10773-016-3103-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By utilizing the quantum parity-check detectors (PCDs) based on the weak cross-Kerr nonlinearities, we propose a scheme for realizing the remote quantum information concentration (RQIC) with the quantum channel of four-photon bound entangled state. After the PCDs and single-photon operations, quantum information initially distributed in three spatially separated photons is concentrated back to a single photon without performing any global operations. The success probability of the scheme is almost a unit. The necessary single-photon unitary operations corresponding to possible measurement outcomes are given detailedly.
引用
收藏
页码：4798 / 4808
页数：11
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