中国物理B ›› 2007, Vol. 16 ›› Issue (10): 2980-2983.doi: 10.1088/1009-1963/16/10/027

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Preparation of W state in resonant bimodal cavity quantum electrodynamics

杨贞标1, 贾连军2   

  1. (1)Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China; (2)Department of Physics, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2007-01-17 修回日期:2007-03-28 出版日期:2007-10-08 发布日期:2007-10-08
  • 基金资助:
    Project partly supported by the National Natural Science Foundation of China (Grant Nos 10575119 and 10235030).

Preparation of W state in resonant bimodal cavity quantum electrodynamics

Jia Lian-Jun(贾连军)a)† and Yang Zhen-Biao(杨贞标)b)   

  1. a Department of Physics, Lanzhou University, Lanzhou 730000, China; b Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China
  • Received:2007-01-17 Revised:2007-03-28 Online:2007-10-08 Published:2007-10-08
  • Supported by:
    Project partly supported by the National Natural Science Foundation of China (Grant Nos 10575119 and 10235030).

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摘要： A scheme is proposed for generating entangled W states with four cavity modes. In this scheme, we send a V-type three-level atom through two identical two-mode cavities in succession. After the atom exits from the second cavity, the four cavity modes are prepared in the W state. On the other hand we can obtain three-atom W states by sending three V-type three-level atoms through a two-mode cavity in turn. The present scheme does not require conditional measurement, and it is easily generalized to preparing $2n$-mode W states and $n$-atom W states.

关键词: resonant interaction, V-type three-level atom, two-mode cavity, W state

Abstract: A scheme is proposed for generating entangled W states with four cavity modes. In this scheme, we send a V-type three-level atom through two identical two-mode cavities in succession. After the atom exits from the second cavity, the four cavity modes are prepared in the W state. On the other hand we can obtain three-atom W states by sending three V-type three-level atoms through a two-mode cavity in turn. The present scheme does not require conditional measurement, and it is easily generalized to preparing $2n$-mode W states and $n$-atom W states.

Key words: resonant interaction, V-type three-level atom, two-mode cavity, W state

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
32.80.-t (Photoionization and excitation) 42.50.Dv (Quantum state engineering and measurements)