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Chinese Physics, 2007, Vol. 16(7): 1855-1857    DOI: 10.1088/1009-1963/16/7/008
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Sudden death of entanglement of a quantum model

Zhang Guo-Feng(张国锋)
Department of Physics, School of Sciences, Beijing University of Aeronauticsand Astronautics (BUAA), Beijing 100083, China
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.
Keywords:  entanglement      sudden death  
Received:  07 November 2006      Revised:  20 November 2006      Accepted manuscript online: 
PACS:  03.65.Ud (Entanglement and quantum nonlocality)  
  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)  
Fund: Project supported by National Natural Science Foundation of China (Grant No 10604053).

Cite this article: 

Zhang Guo-Feng(张国锋) Sudden death of entanglement of a quantum model 2007 Chinese Physics 16 1855

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