Entanglement between two qubits with two-photon transitions interacting with a slightly detuned thermal field

Eugene K. Bashkirov

doi:10.1117/12.2588674

4 May 2021 Entanglement between two qubits with two-photon transitions interacting with a slightly detuned thermal field

Eugene K. Bashkirov

Author Affiliations +

Proceedings Volume 11846, Saratov Fall Meeting 2020: Laser Physics, Photonic Technologies, and Molecular Modeling; 118460X (2021) https://doi.org/10.1117/12.2588674
Event: Saratov Fall Meeting 2020, 2020, Saratov, Russian Federation

Abstract

In this paper, we investigate entanglement between two qubits when they simultaneously not-resonantly interact with a single-mode thermal field through the degenerate two-photon transitions. We obtain the exact solution of the quantum Liouville equation for density matrix of the considered systems in the "dressed" states representation. On its basis the calculate the qubit-qubit reduced density matrix and negativity. We show that a slight detuning between the qubit transition frequency and the twice field frequency might cause high entanglement between the qubits.

Citation Download Citation

Eugene K. Bashkirov "Entanglement between two qubits with two-photon transitions interacting with a slightly detuned thermal field", Proc. SPIE 11846, Saratov Fall Meeting 2020: Laser Physics, Photonic Technologies, and Molecular Modeling, 118460X (4 May 2021); https://doi.org/10.1117/12.2588674

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