Wigner function and entanglement dynamics of a two-atom two-mode nonlinear Jaynes-Cummings model
作者： Mahnaz Ghorbani , Mohammad Javad Faghihi , Hassan Safari
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摘要: In this paper, a model in which two moving atoms interact with two-mode field nondegenerate two-photon transitions is studied the presence of intensity-dependent coupling. To discuss entanglement dynamics between subsystems as well nonclassicality system, time-dependent form state vector system exactly obtained. The and evaluated by von Neumann entropy. examine degree atoms, concurrence negativity are Then, order to understand feature Wigner–Weyl quasi-probability distribution function precisely derived. It deduced from numerical results that domain maximum amount can be appropriately tuned suitably adopting nonlinearity field-mode structure parameters.
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