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Sudden birth and control of entanglement between two atoms successively passing through a bimodal cavity

Liao Qing-Hong Liu Ye

Sudden birth and control of entanglement between two atoms successively passing through a bimodal cavity

Liao Qing-Hong, Liu Ye
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Publishing process
  • Received Date:  07 October 2011
  • Accepted Date:  04 January 2012
  • Published Online:  05 August 2012

Sudden birth and control of entanglement between two atoms successively passing through a bimodal cavity

  • 1. Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant No. 10647133), the Natural Science Foundation of Jiangxi Province (Grant No. 2009GQS0080), and the Research Foundation of the Education Department of Jiangxi Province (Grant Nos. GJJ11339, GJJ12137).

Abstract: The dynamics of entanglement of two atoms passing through a bimodal cavity one after another are investigated by employing the concurrence. The effects of the atomic coherence of the first atom and the initial entanglement of the cavity field on the time evolution of atom-atom entanglement are analyzed. The results show that the phenomenon of sudden birth of entanglement between two atoms occurs under some conditions and the maximum for the creation of the entanglement is dependent on the initial entanglement of the cavity field. Moreover, the threshold time and maximum for the creation of the entanglement can be controlled by changing the amplitude of atom. We find that the proposal may provide us with a theoretical way to control and manipulate the entanglement.

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