Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity

• Published in: Kompʹûternaâ optika Vol. 49; no. 1; pp. 53 - 59
• Main Authors: Bagrov, A.R., Bashkirov, E.K.
• Format: Journal Article
• Language: English
• Published: Samara National Research University 01.02.2025
• Subjects: cavity; entanglement; fidelity; kerr nonlinearity; negativity; qubits; sudden death of entanglement; tangle; thermal field

We obtained a solution of the Liouville equation for a system of three identical qubits interacting without detuning with a thermal field of a cavity with a Kerr medium, for two type of initial pure genuine W-entangled qubits states. On its basis, three entanglement parameters: fidelity, tangle and...