中国物理B ›› 2007, Vol. 16 ›› Issue (4): 1027-1030.doi: 10.1088/1009-1963/16/4/027

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Entanglement swapping between atom and cavity and generation of entangled state of cavity fields

陈爱喜, 邓黎   

  1. Department of Physics, East China Jiaotong University, Nanchang 330013, China
  • 收稿日期:2006-06-20 修回日期:2006-08-02 出版日期:2007-04-20 发布日期:2007-04-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Jiangxi, China (Grant No~0612006) and ECJTU (Grant No~06ZKJC01).

Entanglement swapping between atom and cavity and generation of entangled state of cavity fields

Chen Ai-Xi(陈爱喜)† and Deng Li(邓黎)   

  1. Department of Physics, East China Jiaotong University, Nanchang 330013, China
  • Received:2006-06-20 Revised:2006-08-02 Online:2007-04-20 Published:2007-04-20
  • Supported by:
    Project supported by the Natural Science Foundation of Jiangxi, China (Grant No~0612006) and ECJTU (Grant No~06ZKJC01).

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摘要： This paper proposes a scheme where entanglement swapping between atom and cavity can be realized. \Lambda -type three-level atoms interacting resonantly with cavity field are considered. By detecting atom and cavity field, it realizes entanglement swapping between atom and cavity. It uses the technique of entanglement swapping to generate an entangled state of two cavity fields by measuring on atoms. It discusses the experimental feasibility of the proposed scheme and application of entangled state of cavity fields.

关键词: entanglement swapping, cavity QED, entangled state

Abstract: This paper proposes a scheme where entanglement swapping between atom and cavity can be realized. $\Lambda$-type three-level atoms interacting resonantly with cavity field are considered. By detecting atom and cavity field, it realizes entanglement swapping between atom and cavity. It uses the technique of entanglement swapping to generate an entangled state of two cavity fields by measuring on atoms. It discusses the experimental feasibility of the proposed scheme and application of entangled state of cavity fields.

Key words: entanglement swapping, cavity QED, entangled state

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
42.50.Pq (Cavity quantum electrodynamics; micromasers) 03.67.-a (Quantum information) 03.65.Yz (Decoherence; open systems; quantum statistical methods)