Entanglement Control of Two-Level Atoms in Dissipative Cavities

An open quantum bipartite system consisting of two independent two-level atoms interacting nonlinearly with a two-mode electromagnetic cavity field is investigated by proposing a suitable non-Hermitian generalization of the Hamiltonian. The mathematical procedure of obtaining the corresponding wave...

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Bibliographic Details
Published in:Applied sciences 2020-02, Vol.10 (4), p.1510
Main Authors: Salah, Reyad, Farouk, Ahmed M., Farouk, Ahmed, Abdel-Aty, Mahmoud, Eleuch, Hichem, Obada, Abdel-Shafy F.
Format: Article
Language:English
Subjects:
concurrence
control
Decay
Efficiency
Energy
Entanglement
Frequency dependence
Holes
Lasers
pancharatnam phase
Population
Radio waves
two-two level atoms
Wave functions
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Summary:An open quantum bipartite system consisting of two independent two-level atoms interacting nonlinearly with a two-mode electromagnetic cavity field is investigated by proposing a suitable non-Hermitian generalization of the Hamiltonian. The mathematical procedure of obtaining the corresponding wave function of the system is clearly given. Pancharatnam phase is studied to give a precise information about the required initial system state, which is related to artificial phase jumps, to control the degree of entanglement (DEM) and get the highest concurrence. We discuss the effect of time-variation coupling, and dissipation of both atoms and cavity. The effect of the time-variation function appears as frequency modulation (FM) effect in the radio waves. Concurrence rapidly reaches the disentangled state (death of entanglement) by increasing the effect of field decay. On the contrary, the atomic decay has no effect.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10041510