Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates

doi:10.1088/1674-1056/23/5/050308

中国物理B ›› 2014, Vol. 23 ›› Issue (5): 50308-050308.doi: 10.1088/1674-1056/23/5/050308

Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates

周澜

College of Mathematics & Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of the Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

收稿日期:2013-08-18 修回日期:2013-10-06 出版日期:2014-05-15 发布日期:2014-05-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11104159 and 11347110), the Open Research Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology of the Ministry of Education, Nanjing University of Posts and Telecommunications, China (Grant No. NYKL201303), the Scientific Research Foundation of Nanjing University of Posts and Telecommunications, China (Grant No. NY213054), and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates

Zhou Lan (周澜)

College of Mathematics & Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of the Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Received:2013-08-18 Revised:2013-10-06 Online:2014-05-15 Published:2014-05-15
Contact: Zhou Lan E-mail:zhoul@njupt.edu.cn
About author:03.67.Bg; 03.65.Yz; 03.67.Hk
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11104159 and 11347110), the Open Research Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology of the Ministry of Education, Nanjing University of Posts and Telecommunications, China (Grant No. NYKL201303), the Scientific Research Foundation of Nanjing University of Posts and Telecommunications, China (Grant No. NY213054), and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

摘要/Abstract

摘要： We present a highly efficient entanglement concentration protocol (ECP) for a four-electron system in a less-entangled cluster state. In this ECP, we only require one pair of less-entangled electron cluster states and one ancillary electron to complete the task. With the help of the controlled-not (CNOT) gate, the concentrated maximally entangled state can be retained for further application with some success probability. On the other hand, the discarded items can be reused to obtain a high success probability. All the features make this ECP useful in the current quantum information field.

关键词: quantum communication, entanglement, entanglement concentration

Abstract: We present a highly efficient entanglement concentration protocol (ECP) for a four-electron system in a less-entangled cluster state. In this ECP, we only require one pair of less-entangled electron cluster states and one ancillary electron to complete the task. With the help of the controlled-not (CNOT) gate, the concentrated maximally entangled state can be retained for further application with some success probability. On the other hand, the discarded items can be reused to obtain a high success probability. All the features make this ECP useful in the current quantum information field.

Key words: quantum communication, entanglement, entanglement concentration

中图分类号: (Entanglement production and manipulation)

03.67.Bg

03.65.Yz (Decoherence; open systems; quantum statistical methods) 03.67.Hk (Quantum communication)

周澜. Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates[J]. 中国物理B, 2014, 23(5): 50308-050308.

Zhou Lan (周澜). Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates[J]. Chin. Phys. B, 2014, 23(5): 50308-050308.

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Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates

Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates

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