https://doi.org/10.1140/epjd/s10053-023-00647-z
Regular Article - Quantum Optics
Improvement of the entanglement generation in atomic states using a single-mode field in the Tavis–Cummings model
1
Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2
Center for Research On Laser and Plasma, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Received:
27
November
2022
Accepted:
31
March
2023
Published online:
12
April
2023
Assuming the interaction of two separable two-level atoms with a single-mode field in the Tavis–Cummings model, we investigate the entanglement generation in the atomic state using the concurrence measure. Specifically, even and odd coherent states are selected as the initial states of the field and the entanglement of the final atomic state is computed and compared with the corresponding one when the ordinary coherent state is the initial field state. It is observed that even and odd coherent states induce more entanglement in the atomic state, so that the Bell states can be obtained by optimizing the parameters. In addition, we observe a direct connection between the non-Gaussianity of field states and the entanglement of atomic states. Also, a mixture of separable and entangled states is generated with the passage of time and the range of entanglement variation decreases.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
