Quantum Discord Dynamics in Two Different Non-Markovian Reservoirs
DING Bang-Fu1**, WANG Xiao-Yun1**, LIU Jing-Feng2, YAN Lin1, ZHAO He-Ping1
1College of Physical Science and Information Engineering, Jishou University, Jishou 416000 2 Colleges of Science, South China Agriculture University, Guangzhou 510642
Quantum Discord Dynamics in Two Different Non-Markovian Reservoirs
DING Bang-Fu1**, WANG Xiao-Yun1**, LIU Jing-Feng2, YAN Lin1, ZHAO He-Ping1
1College of Physical Science and Information Engineering, Jishou University, Jishou 416000 2 Colleges of Science, South China Agriculture University, Guangzhou 510642
摘要The quantum discord dynamics of two non-coupled two-level atoms independently interacting with their reservoir is studied under two kinds of non-Markovian conditions, namely, an off-resonant case with atomic transition frequency and a photonic band gap. In the first case, the phenomenon of the quantum discord loss and the oscillatory behavior of the quantum discord can occur by changing the detuning quantity and reducing the spectral coupling width for any initial Bell state. Under the second condition, the trapping phenomenon of the quantum discord can be presented by adjusting the width of gap, that is, the quantum discord of two atoms keep a nonzero constant for a long time.
Abstract：The quantum discord dynamics of two non-coupled two-level atoms independently interacting with their reservoir is studied under two kinds of non-Markovian conditions, namely, an off-resonant case with atomic transition frequency and a photonic band gap. In the first case, the phenomenon of the quantum discord loss and the oscillatory behavior of the quantum discord can occur by changing the detuning quantity and reducing the spectral coupling width for any initial Bell state. Under the second condition, the trapping phenomenon of the quantum discord can be presented by adjusting the width of gap, that is, the quantum discord of two atoms keep a nonzero constant for a long time.
(Entanglement measures, witnesses, and other characterizations)
引用本文:
DING Bang-Fu**;WANG Xiao-Yun**;LIU Jing-Feng;YAN Lin;ZHAO He-Ping
. Quantum Discord Dynamics in Two Different Non-Markovian Reservoirs[J]. 中国物理快报, 2011, 28(10): 104216-104216.
DING Bang-Fu**, WANG Xiao-Yun**, LIU Jing-Feng, YAN Lin, ZHAO He-Ping
. Quantum Discord Dynamics in Two Different Non-Markovian Reservoirs. Chin. Phys. Lett., 2011, 28(10): 104216-104216.
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