中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2510-2513.doi: 10.1088/1009-1963/15/11/008

• • 上一篇    下一篇

Entanglement and decoherence in a quantum dimer

侯喜文1, 惠子1, 丁瑞敏1, 高宇1, 陈小阳2   

  1. (1)Department of Physics, Huazhong Normal University, Wuhan 430079, China; (2)Department of Physics, Huazhong Normal University,Wuhan 430079, China
  • 收稿日期:2006-01-09 修回日期:2006-07-04 出版日期:2006-11-20 发布日期:2006-11-20

Entanglement and decoherence in a quantum dimer

Hou Xi-Wen(侯喜文), Hui Zi(惠子), Ding Rui-Min(丁瑞敏), Chen Xiao-Yang(陈小阳), and Gao Yu(高宇)   

  1. Department of Physics, Huazhong Normal University, Wuhan 430079, China
  • Received:2006-01-09 Revised:2006-07-04 Online:2006-11-20 Published:2006-11-20

PDF (PC)

647

赞

摘要： The dynamical properties of quantum entanglement in an integrable quantum dimer are studied in terms of the reduced-density linear entropy with various coupling parameters and total boson numbers. The characteristic time of decoherence process in the early-time evolution of the linear entropy is obtained, indicating that the characteristic time and the corresponding entropy exhibit a maximum near the position of the corresponding classical separatrix energy.

关键词: entanglement, linear entropy, decoherence, dimer

Abstract: The dynamical properties of quantum entanglement in an integrable quantum dimer are studied in terms of the reduced-density linear entropy with various coupling parameters and total boson numbers. The characteristic time of decoherence process in the early-time evolution of the linear entropy is obtained, indicating that the characteristic time and the corresponding entropy exhibit a maximum near the position of the corresponding classical separatrix energy.

Key words: entanglement, linear entropy, decoherence, dimer

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.65.Yz (Decoherence; open systems; quantum statistical methods)