Quantum Discord Dynamics in Two Different Non-Markovian Reservoirs

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 quant...

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Bibliographic Details
Published in:Chinese physics letters 2011-10, Vol.28 (10), p.104216-1-104216-4
Main Authors: Ding, Bang-Fu (邦福 丁), Wang, Xiao-Yun (小云 王), Liu, Jing-Feng (景峰 刘), Yan, Lin (林颜), Zhao, He-Ping (鹤平 赵)
Format: Article
Language:English
Subjects:
Adjustment
Constants
Dynamic tests
Dynamics
Joining
Reservoirs
Spectra
Trapping
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Summary: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.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/28/10/104216