Entanglement of a General Formalism V-Type Three-Level Atom Interacting with a Single-Mode Field in the Presence of Nonlinearities |
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Authors: | A.-S. F. Obada A. A. Eied G. M. Abd Al-Kader |
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Affiliation: | (1) Mathematics Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt |
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Abstract: | We investigate the evolution of the atomic quantum entropy and the atom-field entanglement in a system of a V-configuration three-level atom interacting with a single-mode field with additional forms of nonlinearities of both the field and the intensity-dependent atom-field coupling. With the derivation of the unitary operator within the frame of the dressed state and the exact results for the state of the system we perform a careful investigation of the temporal evolution of the entropy. A factorization of the initial density operator is assumed, considering the field to be initially in a squeezed coherent or binomial state. The effects of the mean photon number, detuning, Kerr-like medium and the intensity-dependent coupling functional on the entropy are analyzed. |
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Keywords: | Entanglement Quantum entropy |
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