Tripartite entanglement dynamics for an atom interacting with nonlinear couplers |
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Authors: | Mahmoud Abdel-Aty M. Sebawe Abdalla |
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Affiliation: | a Mathematics Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt b Mathematics Department, College of Science, Bahrain University, 32038, Bahrain c Mathematics Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia d Institute for Quantum Information Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada |
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Abstract: | 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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Keywords: | 32.80.-t 42.50.Ct 03.65.Ud 03.65.Yz |
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