Quantum Entanglement Dynamics of Two Atoms in Quantum Light Sources

Quantum entanglement dynamics of two Tavis Cummings atoms interacting with the quantum light sources in a cavity is investigated. The results show the phenomenon that the concurrence disappears abruptly in a finite time, which depends on the initial atomic states and the properties of squeezed state...

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Bibliographic Details
Published in:Communications in theoretical physics 2011-09, Vol.56 (9), p.429-434, Article 429
Main Author: 杨榕灿 李杰 王军民 张天才
Format: Article
Language:English
Subjects:
Atomic states
Dynamic tests
Dynamics
Entangled states
Entanglement
Holes
Light sources
Mathematical analysis
光源
动力学
压缩态
压缩真空场
原子态
消相干
相互作用
量子纠缠
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Summary:Quantum entanglement dynamics of two Tavis Cummings atoms interacting with the quantum light sources in a cavity is investigated. The results show the phenomenon that the concurrence disappears abruptly in a finite time, which depends on the initial atomic states and the properties of squeezed states. We find that there are two decoherence- free states in squeezed vacuum fields; one is the singlet state, and the other entangled state is the state that combines both excited states and ground states with a relative phase being equal to the phase of the squeezed state.
ISSN:0253-6102
DOI:10.1088/0253-6102/56/3/06