中国物理B ›› 2002, Vol. 11 ›› Issue (9): 926-931.doi: 10.1088/1009-1963/11/9/314

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Entropy, non-classical property of the trapped ion system driven by running-wave lasers

方卯发1, 刘翔2   

  1. (1)Department of Physics, Hunan Normal University, Changsha 410081, China; (2)Department of Physics, Hunan Normal University, Changsha 410081, China; Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • 收稿日期:2002-03-23 修回日期:2002-05-01 出版日期:2002-09-12 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 19874020), and the Natural Science Foundation of Hunan Province, China (Grant No 01JJY3030).

Entropy, non-classical property of the trapped ion system driven by running-wave lasers

Liu Xiang (刘翔)ab, Fang Mao-Fa (方卯发)a   

  1. a Department of Physics, Hunan Normal University, Changsha 410081, China; b Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2002-03-23 Revised:2002-05-01 Online:2002-09-12 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 19874020), and the Natural Science Foundation of Hunan Province, China (Grant No 01JJY3030).

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摘要： We study the dynamical behaviour of the ionic inversion in a trapped ion system in running-wave lasers, and we discuss the properties of entanglement between the ion and phonons and the statistics of the vibrational phonon field. It is shown that the appearance of the super-revivals of the ion inversion is dependent on the initial parameters of the vibrational phonon field. The Schr?dinger cat and sub-Poissonian statistics of the phonon field can be also exhibited in this system for suitable initial values.

Abstract: We study the dynamical behaviour of the ionic inversion in a trapped ion system in running-wave lasers, and we discuss the properties of entanglement between the ion and phonons and the statistics of the vibrational phonon field. It is shown that the appearance of the super-revivals of the ion inversion is dependent on the initial parameters of the vibrational phonon field. The Schr?dinger cat and sub-Poissonian statistics of the phonon field can be also exhibited in this system for suitable initial values.

Key words: entropy, non-classical property

中图分类号:  (Thermodynamic functions and equations of state)

  • 05.70.Ce
03.65.Ud (Entanglement and quantum nonlocality) 42.50.Dv (Quantum state engineering and measurements) 61.80.Ba (Ultraviolet, visible, and infrared radiation effects (including laser radiation))