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Volume 19, Issue 1 (Winter-Spring 2025)
IJOP 2025, 19(1): 3-18 |
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Daeimohammad M, Nili Ahmadabadi M. Investigation of the Effects of Kerr-like Environments on Entanglement between Two Single-atom Cavities. , IJOP. 2025; 19 (1) :3-18
URL: http://ijop.ir/article-1-609-en.html
URL: http://ijop.ir/article-1-609-en.html
1- Department of Physics, Na.C., Islamic Azad University, Najafabad, Iran
2- Department of Mathematics, Na.C., Islamic Azad University, Najafabad, Iran
2- Department of Mathematics, Na.C., Islamic Azad University, Najafabad, Iran
Abstract: (27 Views)
In this research, we investigate the effects of Kerr-like environments on the entanglement between two cavities. Each cavity contains a multi-photon field and a two-level atom. We use basis states to examine entanglement, where there are two excitations in the total system (atom + field). Since we consider the cavity environments to be Kerr-like, we employ the deformed Jaynes–Cummings model (DJCM). Due to the physical model used, we assume the deformation function depends on the photon number. It is assumed that there is no direct coupling between the two cavities or between the two atoms, and each atom interacts locally with its own field. We will show that the presence or absence of generalized deformation will affect entanglement both qualitatively and quantitatively. The criterion used to examine entanglement is the concurrence parameter. We will show that when the excitation is equally shared between the atom and the field, maximum entanglement between them occurs. Furthermore, when the excitation is concentrated solely on the atom or solely on the field, the entanglement between the atom and the field will vanish. In addition, we will show that when deformation is present, the entanglement time of the system increases. However, for some initial conditions, deformation causes sudden death of entanglement, resulting in entanglement instability, while for sufficiently large values of deformation, the system reaches a steady state. We will also show that the Kerr-like nature of the environment increases entanglement.
Keywords: Concurrence parameter, Coupling Constant, Deformed Jaynes-Cummings Model, Detuning, Entanglement
Type of Study: Research |
Subject:
Quantum Optics, Quantum Communications, Quantom Computing
Received: 2026/04/19 | Revised: 2026/11/15 | Accepted: 2026/07/8 | Published: 2025/01/12
Received: 2026/04/19 | Revised: 2026/11/15 | Accepted: 2026/07/8 | Published: 2025/01/12
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