Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields

doi:10.1088/1674-1056/19/12/124207

中国物理B ›› 2010, Vol. 19 ›› Issue (12): 124207-124207.doi: 10.1088/1674-1056/19/12/124207

Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields

周并举, 刘一曼, 赵明卓, 刘小娟

Department of Physics, Hunan University of Science and Technology, Xiangtan 411201, China

收稿日期:2009-11-25 修回日期:2010-05-10 出版日期:2010-12-15 发布日期:2010-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 19874020), the Natural Science Foundation of Hunan Province of China (Grant Nos. 09JJ3012 and 10JJ9002), and the Research Foundation of Education Bureau of Hunan Province of China (Grant No. 10A032).

Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields

Zhou Bing-Ju(周并举), Liu Yi-Man(刘一曼), Zhao Ming-Zhuo(赵明卓), and Liu Xiao-Juan(刘小娟)^†

Department of Physics, Hunan University of Science and Technology, Xiangtan 411201, China

Received:2009-11-25 Revised:2010-05-10 Online:2010-12-15 Published:2010-12-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 19874020), the Natural Science Foundation of Hunan Province of China (Grant Nos. 09JJ3012 and 10JJ9002), and the Research Foundation of Education Bureau of Hunan Province of China (Grant No. 10A032).

摘要/Abstract

摘要： From the viewpoint of quantum information, this paper studies preparation and control of atomic optimal entropy squeezing states (AOESS) for a moving two-level atom under control of the two-mode squeezing vacuum fields. Necessary conditions of preparation of the AOESS are analysed, and numerical verification of the AOESS is finished. It shows that the AOESS can be prepared by controlling the time of the atom interaction with the field, cutting the entanglement between the atom and field, and adjusting squeezing factor of the field. An atomic optimal entropy squeezing sudden generation in different components can alternately be realized by controlling the field-mode structure parameter.

Abstract: From the viewpoint of quantum information, this paper studies preparation and control of atomic optimal entropy squeezing states (AOESS) for a moving two-level atom under control of the two-mode squeezing vacuum fields. Necessary conditions of preparation of the AOESS are analysed, and numerical verification of the AOESS is finished. It shows that the AOESS can be prepared by controlling the time of the atom interaction with the field, cutting the entanglement between the atom and field, and adjusting squeezing factor of the field. An atomic optimal entropy squeezing sudden generation in different components can alternately be realized by controlling the field-mode structure parameter.

Key words: atomic optimal entropy squeezing state, squeezing factor of the field, the field-mode structure parameter

中图分类号: (Mechanical effects of light on atoms, molecules, and ions)

37.10.Vz

42.50.Dv (Quantum state engineering and measurements) 42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption) 42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps)

周并举, 刘一曼, 赵明卓, 刘小娟. Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields[J]. 中国物理B, 2010, 19(12): 124207-124207.

Zhou Bing-Ju(周并举), Liu Yi-Man(刘一曼), Zhao Ming-Zhuo(赵明卓), and Liu Xiao-Juan(刘小娟). Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields[J]. Chin. Phys. B, 2010, 19(12): 124207-124207.

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Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields

Preparation and control of atomic optimal entropy squeezing states for a moving two-level atom under control of the two-mode squeezing vacuum fields

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