S MIRZAEI
Articles written in Pramana – Journal of Physics
Volume 94 All articles Published: 28 July 2020 Article ID 0113 Research Article
Thermal entanglement and teleportation via thermally atomic entangled state in cavity QED
In this article, we study thermal entanglement between two-coupled two-level atoms interacting with a single-mode cavity field. The cavity mode is assumed to be initially in the vacuum state and the detuning parameter is large. The thermal entanglement in this two-qubit system is quantified in terms of the concurrence, as a proper measure for two-qubit mixed states. We investigate how the thermal entanglement depends on temperature, dipole coupling between the atoms and detuning parameter. In addition, we shall use the generated thermally atomic entangled state as a quantum channel for teleportation and we mainly concentrate on the fidelity of teleportation. Finally, the relationship between the quantum coherence and entanglement will be discussed.
Volume 96 All articles Published: 25 April 2022 Article ID 0087 Research Article
Deformed Jaynes–Cummings model (JCM) has a physical importance in quantum optics. Hence, we investigated the nonlinear JCM including the
intensity-dependent coupling constant and the additional Kerr term. The cavity was assumed to be in thermal equilibrium with a heat reservoir at temperature
T . Using the generators of a closed algebra which reduces to the
Volume 97, 2023
All articles
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