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《Acta Optica Sinica》 2017-08
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Effect of Interatomic Distance in Photonic Band Gapon Entanglement Evolution Property Among Three Atoms

Yan Li;Department of Physics and Electronic Engineering,Heze University;  
In the model of photonic band gap,the entanglement dynamical evolution of a system where three two-level atoms interact with a heat reservoir is investigated.The entanglement among systems is described by using the pseudo-mode theory and the tripartite negative eigenvalue method.The effects of the heat-reservoir spectral density function,the detuning between the atoms and pseudo modes,and the interatomic dipole-dipole interaction strength on the three-atom entanglement evolution are analyzed by means of numerical calculation.The results show that in a perfect band gap model,the trapping phenomenon appears in the interatomic entanglement evolution versus time.The detuning between the atoms and pseudo modes makes the interatomic entanglement show a non-monotonic transition.The three-atom entanglement degree increases with the increase of the interatomic distance.
【CateGory Index】: O431.2
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