中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2143-2146.doi: 10.1088/1674-1056/17/6/033

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Generation of entangled coherent states for two cavity modes via resonant interaction with a V-type three-level atom

郑仕标   

  1. Department of Electronic Science and Applied Physics Fuzhou University, Fuzhou 350002, China
  • 收稿日期:2007-08-05 修回日期:2007-10-17 出版日期:2008-06-20 发布日期:2008-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10674025) and the Funds from Fuzhou University.

Generation of entangled coherent states for two cavity modes via resonant interaction with a V-type three-level atom

Zheng Shi-Biao(郑仕标)†   

  1. Department of Electronic Science and Applied Physics Fuzhou University, Fuzhou 350002, China
  • Received:2007-08-05 Revised:2007-10-17 Online:2008-06-20 Published:2008-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10674025) and the Funds from Fuzhou University.

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摘要： This paper proposes a scheme for the generation of entangled coherent states for two cavity modes. In the scheme a V-type three-level atom is sent through a two-mode cavity filled with a coherent field. After the atom--cavity interaction and detection of the atomic state the cavity modes may evolve to a superposition of two-mode coherent states. As the scheme is based on resonant atom--cavity interaction, the required interaction time is short, which is important in view of the decoherence. Moreover, additional classical pulses are unnecessary before and after the atom--cavity interaction.

Abstract: This paper proposes a scheme for the generation of entangled coherent states for two cavity modes. In the scheme a V-type three-level atom is sent through a two-mode cavity filled with a coherent field. After the atom--cavity interaction and detection of the atomic state the cavity modes may evolve to a superposition of two-mode coherent states. As the scheme is based on resonant atom--cavity interaction, the required interaction time is short, which is important in view of the decoherence. Moreover, additional classical pulses are unnecessary before and after the atom--cavity interaction.

Key words: entangled coherent state, resonant interaction, V-type three-level atom

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

  • 42.50.Dv
03.65.Ud (Entanglement and quantum nonlocality) 03.65.Yz (Decoherence; open systems; quantum statistical methods) 42.50.Pq (Cavity quantum electrodynamics; micromasers)