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Dynamics of two-photon Tavis-Cummings model with Kerr media

Башкиров Е. К.

Published Jan 1, 2022• 0 citations
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Dynamics of two-photon Tavis-Cummings model with Kerr media

Eugene K. Bashkirov

The entanglement between two qubits not-resonantly interacting with a single-mode field of an ideal resonator with Kerr media via degenerate two-photon transitions was studied. The exact solution for time-dependent density matrix and calculated on its basis the qubit-qubit entanglement parameter - negativity was derived. The results showed that Kerr media and detuning dramatically affected the entanglement behavior. More interestingly, that for initial entangled qubits states Kerr media and detuning avoids the entanglement sudden death effect.

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Thermal entanglement in Tavis-Cummings models with Kerr media

Eugene K. Bashkirov

In this paper, we investigated the entanglement dynamics between two dipole-coupled qubits not-resonantly interacting with a thermal one-mode field of lossless cavity with Kerr media. We obtained the exact solution for time-dependent density matrix and calculated on its basis the qubit-qubit entanglement parameter – negativity. The results show that Kerr nonlinearity greatly affected the entanglement behavior. More interestingly, that for initial entangled qubits states Kerr media avoids the entanglement sudden death effect.

Saratov Fall Meeting: Laser Physics, Photonic Technologies, and Molecular Modeling•Apr 29, 2022•2 citations
The entanglement between two qubits not-resonantly interacting with a single-mode field of an ideal resonator with Kerr media via degenerate two-photon transitions was studied. The exact solution for time-dependent density matrix and calculated on its basis the qubit-qubit entanglement parameter - negativity was derived. The results showed that Kerr media and detuning dramatically affected the entanglement behavior. More interestingly, that for initial entangled qubits states Kerr media and detuning avoids the entanglement sudden death effect.
In this paper, we investigated the entanglement dynamics between two dipole-coupled qubits not-resonantly interacting with a thermal one-mode field of lossless cavity with Kerr media. We obtained the exact solution for time-dependent density matrix and calculated on its basis the qubit-qubit entanglement parameter – negativity. The results show that Kerr nonlinearity greatly affected the entanglement behavior. More interestingly, that for initial entangled qubits states Kerr media avoids the entanglement sudden death effect.