中国物理B ›› 2016, Vol. 25 ›› Issue (2): 20308-020308.doi: 10.1088/1674-1056/25/2/020308

• GENERAL • 上一篇    下一篇

Efficient entanglement concentration for arbitrary less-entangled NOON state assisted by single photons

Lan Zhou(周澜) and Yu-Bo Sheng(盛宇波)   

  1. 1. College of Mathematics and Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    2. Key Laboratory of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    3. Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • 收稿日期:2015-07-20 修回日期:2015-09-17 出版日期:2016-02-05 发布日期:2016-02-05
  • 通讯作者: Yu-Bo Sheng E-mail:shengyb@njupt.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474168 and 61401222), the Qing Lan Project of Jiangsu Province of China, the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20151502), and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

Efficient entanglement concentration for arbitrary less-entangled NOON state assisted by single photons

Lan Zhou(周澜)1,2 and Yu-Bo Sheng(盛宇波)2,3   

  1. 1. College of Mathematics and Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    2. Key Laboratory of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;
    3. Institute of Signal Processing Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2015-07-20 Revised:2015-09-17 Online:2016-02-05 Published:2016-02-05
  • Contact: Yu-Bo Sheng E-mail:shengyb@njupt.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474168 and 61401222), the Qing Lan Project of Jiangsu Province of China, the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20151502), and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘要:

We put forward two efficient entanglement concentration protocols (ECPs) for arbitrary less-entangled NOON state. Both ECPs only require one pair of less-entangled NOON state and an auxiliary photon. In the first ECP, the auxiliary photon is shared by two parties, while in the second ECP, the auxiliary photon is only possessed by one party, which can increase the practical success probability by avoiding the transmission loss and simplify the operations. Moreover, both ECPs can be used repeatedly to get a high success probability. Based on the above features, our two ECPs, especially the second one, may be useful in the quantum information processing.

关键词: quantum communication, NOON state, entanglement concentration, cross-Kerr nonlinearity

Abstract:

We put forward two efficient entanglement concentration protocols (ECPs) for arbitrary less-entangled NOON state. Both ECPs only require one pair of less-entangled NOON state and an auxiliary photon. In the first ECP, the auxiliary photon is shared by two parties, while in the second ECP, the auxiliary photon is only possessed by one party, which can increase the practical success probability by avoiding the transmission loss and simplify the operations. Moreover, both ECPs can be used repeatedly to get a high success probability. Based on the above features, our two ECPs, especially the second one, may be useful in the quantum information processing.

Key words: quantum communication, NOON state, entanglement concentration, cross-Kerr nonlinearity

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication) 03.65.Ud (Entanglement and quantum nonlocality)