Entanglement between atom interacting with a thermal field of a lossless cavity and a free atom

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In the present paper we studied the entanglement of a quantum system consisting of two dipole-coupled two-level atoms, one of which interacts with one-mode thermal field in a lossless cavity, and another is outside a cavity. We obtained the analytical expression of the atom-atom negativity for separable initial atomic state and investigated the influence of a detuning between the atom and the field frequencies and direct dipole-dipole interaction on an atom-atom entanglement. We derived that detuning might cause high atom-atom entanglement in the presence of the dipole-dipole interaction. We also showed that the detuning and dipole-dipole interaction are an effective mechanisms for control and operation of the atomic entanglement.

About the authors

E.K. Bashkirov

Самарский национальный исследовательский университет им. акад. С.П. Королева

Author for correspondence.
Email: bash@samsu.ru

M.O. Guslyannikova

Самарский национальный исследовательский университет им. акад. С.П. Королева

Email: ssau@ssau.ru


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Copyright (c) 2018 Bashkirov E., Guslyannikova M.

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