中国物理B ›› 2013, Vol. 22 ›› Issue (8): 80305-080305.doi: 10.1088/1674-1056/22/8/080305

• GENERAL • 上一篇    下一篇

Control of sudden transition between classical and quantum correlations of two strongly driven atoms in dissipative cavities

穆青霞   

  1. School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • 收稿日期:2012-11-29 修回日期:2013-02-07 出版日期:2013-06-27 发布日期:2013-06-27
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11205056 and 11247308) and the Special Funds for the Co-construction Project of Beijing.

Control of sudden transition between classical and quantum correlations of two strongly driven atoms in dissipative cavities

Mu Qing-Xia (穆青霞)   

  1. School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • Received:2012-11-29 Revised:2013-02-07 Online:2013-06-27 Published:2013-06-27
  • Contact: Mu Qing-Xia E-mail:qingxiamu@ncepu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11205056 and 11247308) and the Special Funds for the Co-construction Project of Beijing.

摘要: We investigate analytically the dynamics of classical and quantum correlations between two strongly driven atoms, each of which is trapped inside a dissipative cavity. It is found that there exists a finite time interval during which the quantum discord initially prepared in the X-type states is not destroyed by the decay of the cavities. The sudden transition between classical correlation and quantum discord is sensitive to the initial-state parameter, the cavity decay rate, and the cavity mode-driving field detuning. Interestingly, we show that the transition time can be prolonged significantly by increasing the degree of the detuning.

关键词: quantum discord, sudden transition, classical correlations

Abstract: We investigate analytically the dynamics of classical and quantum correlations between two strongly driven atoms, each of which is trapped inside a dissipative cavity. It is found that there exists a finite time interval during which the quantum discord initially prepared in the X-type states is not destroyed by the decay of the cavities. The sudden transition between classical correlation and quantum discord is sensitive to the initial-state parameter, the cavity decay rate, and the cavity mode-driving field detuning. Interestingly, we show that the transition time can be prolonged significantly by increasing the degree of the detuning.

Key words: quantum discord, sudden transition, classical correlations

中图分类号:  (Entanglement measures, witnesses, and other characterizations)

  • 03.67.Mn
42.50.Dv (Quantum state engineering and measurements)