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Entanglement properties in the system of atoms interacting with three coupled cavities which are in weak coherent states

Lu Dao-Ming

Entanglement properties in the system of atoms interacting with three coupled cavities which are in weak coherent states

Lu Dao-Ming
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  • Received Date:  20 July 2012
  • Accepted Date:  07 September 2012
  • Published Online:  05 February 2013

Entanglement properties in the system of atoms interacting with three coupled cavities which are in weak coherent states

  • 1. Department of Electronic Engineering, Wuyi University, Wuyishan 354300, China
Fund Project:  Project supported by by the Natural Science Foundation of Fujian Province, China (Grant No. 2011J01018).

Abstract: We study the entanglement dynamics of the system comprising three two-level atoms resonantly interacting with three coupled cavities which are in weak coherent states initially. The atom-atom entanglement and cavity-cavity entanglement are investigated. The influences of coupling constant between cavities and intensity of the cavity field on entanglement properties are discussed. The results obtained using the numerical method show that atom-atom entanglement and cavity-cavity entanglement are both strengthened with the increase of intensity of the cavity field; on the other hand, atom-atom entanglement is weakened and the entanglement between cavity A and cavity B is strengthened with the increase of the coupling constant between cavities, and the entanglement between cavity B and cavity C has a nonlinear relation with the increase of the cavity-cavity coupling coefficient. These results are different from those in the case that cavity field is in vacuum state initially.

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