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Decoherence in time evolution of bound entanglement
Authors:Z Sun  X G Wang  Y B Gao  C P Sun
Institution:(1) Department of Physics, Zhejiang University, Zhejiang Institute of Modern Physics, HangZhou, 310027, P.R. China;(2) College of Applied Science, Beijing University of Technology, Beijing, 100022, P.R. China;(3) Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China
Abstract:We study a dynamic process of disentanglement by considering the time evolution of bound entanglement for a quantum open system, two qutrits coupling to a common environment. Here, the initial quantum correlations of the two qutrits are characterized by the bound entanglement. Both bosonic and spin environments are considered. We found that the bound entanglement displays collapses and revivals, and it can be stable against small temperature and time change. The thermal fluctuation effects on bound entanglement are also considered.
Keywords:03  67  Mn Entanglement production  characterization  and manipulation  05  40  -a Fluctuation phenomena  random processes  noise  and Brownian motion  03  65  Yz Decoherence  open systems  quantum statistical methods  32  80  -t Photon interactions with atoms
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