中国物理B ›› 2007, Vol. 16 ›› Issue (3): 630-634.doi: 10.1088/1009-1963/16/3/012

• GENERAL • 上一篇    下一篇

Trigger and control entanglement by atoms with different interaction times

任杰, 郝翔, 朱士群   

  1. School of Physical Science and Technology,Suzhou University, Suzhou, Jiangsu 215006, China
  • 收稿日期:2006-03-06 修回日期:2006-04-26 出版日期:2007-03-20 发布日期:2007-03-20
  • 基金资助:
    Project supported by the Special Research Fund for the Doctoral Program of Higher Education, China (Grant No~20050285002).

Trigger and control entanglement by atoms with different interaction times

Ren Jie(任杰), Hao Xiang(郝翔), and Zhu Shi-Qun(朱士群)†   

  1. School of Physical Science and Technology,Suzhou University, Suzhou, Jiangsu 215006, China
  • Received:2006-03-06 Revised:2006-04-26 Online:2007-03-20 Published:2007-03-20
  • Supported by:
    Project supported by the Special Research Fund for the Doctoral Program of Higher Education, China (Grant No~20050285002).

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摘要： The generation of the entanglement between two two-level atoms interacting with the third atom driven by white noise is investigated when the coupling between atoms is modulated by a pulse function. This paper finds that the initial triggering time and the width of the pulse can generate a peak in the entanglement. There is an optimal width of the pulse for which the entanglement can reach a maximum. The asymmetry of the coupling between atoms can generate different entanglement in the system. The multiple triggers can generate multiple peaks in the entanglement. The separation between two peaks is increased as the width of the pulse is increased.

Abstract: The generation of the entanglement between two two-level atoms interacting with the third atom driven by white noise is investigated when the coupling between atoms is modulated by a pulse function. This paper finds that the initial triggering time and the width of the pulse can generate a peak in the entanglement. There is an optimal width of the pulse for which the entanglement can reach a maximum. The asymmetry of the coupling between atoms can generate different entanglement in the system. The multiple triggers can generate multiple peaks in the entanglement. The separation between two peaks is increased as the width of the pulse is increased.

Key words: two-level atom, trigger entanglement, control entanglement, peak

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.75.Be (Atom and neutron optics) 42.50.Dv (Quantum state engineering and measurements)