Tripartite entanglement dynamics for atom in a two-mode nonlinear cavity

Details Tripartite entanglement dynamics for atom in a two-mode nonlinear cavity Tripartite entanglement dynamics for atom in a two-mode nonlinear cavity

2008-05-04

arxiv.org/abs/0805.0423v2

Physics Letters A, Volume 373, Issue 3, 12 January 2009, Pages 315-319

Physics

Quantum Physics

13 pages, 4 figures

Scientific paper

10.1016/j.physleta.2008.11.036

In this communication we introduce a new model which represents the interaction between an atom and two fields injected simultaneously within a cavity including the nonlinear couplers. By using the canonical transformation the model can be regarded as a generalization of several well-known models. We calculate and discuss entanglement between the tripartite system of one atom and the two cavity modes. For a short interaction time, similarities between the behavior based on our solution compared with the other simulation based on a numerical linear algebra solution of the original Hamiltonian with truncated Fock bases for each mode, is shown. For a specific value of the Kerr-like medium defined in this letter, we find that the entanglement, as measured by concurrence, may terminate abruptly in a finite time.

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