中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1045-1048.doi: 10.1088/1674-1056/18/3/034

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Deterministic generation of entangled coherent states for two atomic samples

卢道明1, 郑仕标2   

  1. (1)Department of Electronic Engineering, Wuyi University, Wuyishan 354300, China; (2)Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China
  • 收稿日期:2008-06-30 修回日期:2008-08-03 出版日期:2009-03-20 发布日期:2009-03-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10674025).

Deterministic generation of entangled coherent states for two atomic samples

Lu Dao-Ming(卢道明)a) and Zheng Shi-Biao(郑仕标)b)†   

  1. a Department of Electronic Engineering, Wuyi University, Wuyishan 354300, China; b Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China
  • Received:2008-06-30 Revised:2008-08-03 Online:2009-03-20 Published:2009-03-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10674025).

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摘要： This paper proposes an efficient scheme for deterministic generation of entangled coherent states for two atomic samples. In the scheme two collections of atoms are trapped in an optical cavity and driven by a classical field. Under certain conditions the two atomic samples evolve from an coherent state to an entangled coherent state. During the interaction the cavity mode is always in the vacuum state and the atoms have no probability of being populated in the excited state. Thus, the scheme is insensitive to both the cavity decay and atomic spontaneous emission.

Abstract: This paper proposes an efficient scheme for deterministic generation of entangled coherent states for two atomic samples. In the scheme two collections of atoms are trapped in an optical cavity and driven by a classical field. Under certain conditions the two atomic samples evolve from an coherent state to an entangled coherent state. During the interaction the cavity mode is always in the vacuum state and the atoms have no probability of being populated in the excited state. Thus, the scheme is insensitive to both the cavity decay and atomic spontaneous emission.

Key words: entangled coherent state, atomic sample, Raman coupling

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

  • 42.50.Dv
37.10.De (Atom cooling methods) 03.65.Ud (Entanglement and quantum nonlocality)