中国物理B ›› 2009, Vol. 18 ›› Issue (11): 4695-4701.doi: 10.1088/1674-1056/18/11/014

• GENERAL • 上一篇    下一篇

Entanglement transfer between atoms in two distant cavities via an optical fibre

肖兴, 方卯发   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2009-01-08 修回日期:2009-03-03 出版日期:2009-11-20 发布日期:2009-11-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025), the Natural Science Foundation of Hunan Province of China (Grant No　07JJ3013) and the Education Ministry of Hunan Province of China (Grant No 06A038).

Entanglement transfer between atoms in two distant cavities via an optical fibre

Xiao Xing(肖兴) and Fang Mao-Fa(方卯发)†   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • Received:2009-01-08 Revised:2009-03-03 Online:2009-11-20 Published:2009-11-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025), the Natural Science Foundation of Hunan Province of China (Grant No　07JJ3013) and the Education Ministry of Hunan Province of China (Grant No 06A038).

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摘要： This paper presents a treatment of the entanglement transfer between atoms in two distant cavities coupled by an optical fibre. If the atoms resonantly and collectively interact with the local single-mode cavity fields and the dipole--dipole interaction between the atoms is neglected, then it shows that a complete transfer of entanglement from one pair of atoms to another can be deterministically realized. Furthermore, it also investigates the effects of dipole--dipole interaction on entanglement transfer on the condition that the interaction between the atoms and the cavity is much weaker than the coupling between the cavity and the fibre.

Abstract: This paper presents a treatment of the entanglement transfer between atoms in two distant cavities coupled by an optical fibre. If the atoms resonantly and collectively interact with the local single-mode cavity fields and the dipole--dipole interaction between the atoms is neglected, then it shows that a complete transfer of entanglement from one pair of atoms to another can be deterministically realized. Furthermore, it also investigates the effects of dipole--dipole interaction on entanglement transfer on the condition that the interaction between the atoms and the cavity is much weaker than the coupling between the cavity and the fibre.

Key words: entanglement transfer, dipole--dipole interaction, concurrence

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.81.-i (Fiber optics) 42.50.Dv (Quantum state engineering and measurements)