中国物理B ›› 2007, Vol. 16 ›› Issue (7): 1855-1857.doi: 10.1088/1009-1963/16/7/008

• GENERAL • 上一篇    下一篇

Sudden death of entanglement of a quantum model

张国锋   

  1. Department of Physics, School of Sciences, Beijing University of Aeronauticsand Astronautics (BUAA), Beijing 100083, China
  • 收稿日期:2006-11-07 修回日期:2006-11-20 出版日期:2007-07-04 发布日期:2007-07-04
  • 基金资助:
    Project supported by National Natural Science Foundation of China (Grant No 10604053).

Sudden death of entanglement of a quantum model

Zhang Guo-Feng(张国锋)†   

  1. Department of Physics, School of Sciences, Beijing University of Aeronauticsand Astronautics (BUAA), Beijing 100083, China
  • Received:2006-11-07 Revised:2006-11-20 Online:2007-07-04 Published:2007-07-04
  • Supported by:
    Project supported by National Natural Science Foundation of China (Grant No 10604053).

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摘要： In this paper the so-called sudden death effect of entanglement is investigated in a quantum model. The results show that one can expect the resurrection of the original entanglement to occur in a periodic way following each sudden death event. The length of the time interval for the zero entanglement depends not only on the degree of entanglement of the initial state but also on the initial state.

Abstract: In this paper the so-called sudden death effect of entanglement is investigated in a quantum model. The results show that one can expect the resurrection of the original entanglement to occur in a periodic way following each sudden death event. The length of the time interval for the zero entanglement depends not only on the degree of entanglement of the initial state but also on the initial state.

Key words: entanglement, sudden death

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Lx (Quantum computation architectures and implementations) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.50.Dv (Quantum state engineering and measurements)