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Physica A Statistical Mechanics and its Applications

Entropy and entanglement of time dependent two-mode Jaynes–Cummings model

M. Sebawe Abdalla, Mahmoud Abdel‐Aty, A.‐S. F. Obada

Published Apr 25, 2003• 51 citations
Publisher
DOI
10.1016/s0378-4371(03)00290-5

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An exact solution of the problem of two-atom one- and two-mode Jaynes-Cummings model with intensity- dependent coupling is presented. Asymptotic solutions for system state vectors are obtained in the approximation of large initial coherent fields. The atom-field entanglement is investigated on the basis of the reduced atomic entropy dynamics. The possibility of the system being initially in a pure disentangled state to revive into this state during the evolution process for both models is shown. Conditions and times of disentanglement are derived.