https://doi.org/10.1140/epjd/e2007-00319-x
Decoherence in time evolution of bound entanglement
1
Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, 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
Corresponding author: a zsun@hbar.zju.edu.cn
Received:
8
June
2007
Revised:
13
October
2007
Published online:
23
November
2007
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.
PACS: 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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
