Dynamics of Entanglement in the Cavity with Nonlinear Medium

Shaojiang Du, Hairan Feng

Physics and Information Engineering Department, Jining University, Qufu, China.

DOI: 10.4236/jmp.2013.45086                

Abstract

We investigate the evolution of initial entangled two-atom in cavity with single-mode light field. Using the method of negative eigenvalue of partially transposed matrix we analysis the evolution of the entanglement of the two-atom in a field of number state and Kerr-media environment and find that entanglement sudden death phenomenon occurs in the number of particles field. When the atoms interact with the Kerr medium, we obtain that the phenomenon of sudden death can be eliminated in the particle-number field, and the entanglement of two-atom oscillates around a high-value.

Keywords

Quantum Optics; Kerr Medium; Negativity; Entanglement Sudden Death

Conflicts of Interest

The authors declare no conflicts of interest.

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