中国物理B ›› 2008, Vol. 17 ›› Issue (5): 1607-1613.doi: 10.1088/1674-1056/17/5/013

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Remote atom entanglement in a fibre-connected three-atom system

陈 菁1, 宋鹤山2, 郭彦青3   

  1. (1)College of Science, Beijing Forestry University, Beijing 100083, China; (2)Department of Physics, Dalian University of Technology, Dalian 116024, China; (3)Department of Physics, Dalian Maritime University, Dalian 116026, China
  • 收稿日期:2007-10-08 修回日期:2007-11-08 出版日期:2008-05-20 发布日期:2008-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10647107 and 10575017).

Remote atom entanglement in a fibre-connected three-atom system

Guo Yan-Qing(郭彦青)a)†, Chen Jing(陈菁)b), and Song He-Shan(宋鹤山)c)   

  1. a Department of Physics, Dalian Maritime University, Dalian 116026, China; b College of Science, Beijing Forestry University, Beijing 100083, China; c Department of Physics, Dalian University of Technology, Dalian 116024, China
  • Received:2007-10-08 Revised:2007-11-08 Online:2008-05-20 Published:2008-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10647107 and 10575017).

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摘要： An Ising-type atom--atom interaction is obtained in a fibre-connected three-atom system. The interaction is effective when Δ≈γ0>> g. The preparations of remote two-atom and three-atom entanglements governed by this interaction are discussed in a specific parameter region. The overall two-atom entanglement is very small because of the existence of the third atom. However, the three-atom entanglement can reach a maximum very close to $1$.

关键词: three-atom system, Ising model, remote atom entanglement

Abstract: An Ising-type atom--atom interaction is obtained in a fibre-connected three-atom system. The interaction is effective when $\varDelta\approx \gamma_0\gg g$. The preparations of remote two-atom and three-atom entanglements governed by this interaction are discussed in a specific parameter region. The overall two-atom entanglement is very small because of the existence of the third atom. However, the three-atom entanglement can reach a maximum very close to $1$.

Key words: three-atom system, Ising model, remote atom entanglement

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.50.Pq (Cavity quantum electrodynamics; micromasers)