Quantum entanglement in the mode-mode competition system |
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Authors: | Wu Qin Fang Mao-F Feng Yong-Zhen and Hu Yao-Hua |
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Institution: | College of Physics and Information Science,
Hunan Normal University, Changsha 410081, China; School of Basic Medical Science, Guangdong Medical College, Dongguan 523808, China |
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Abstract: | Considering a two-level atom interacting with the competing two-mode
field, this paper investigates the entanglement between the
two-level atom and the two-mode field by using the quantum reduced
entropy, and that between the two-mode field by using the quantum
relative entropy of entanglement. It shows that the two kinds of
entanglement are dependent on the relative coupling strength of
atom-field and the atomic distribution, and exhibit the periodical
evolution. The maximal atom--field entanglement state can be prepared
via the appropriate selection of system parameters and interaction
time. |
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Keywords: | mode-mode competition system entanglement reduced entropy relative entropy |
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