Abstract

MOLINARES, H.; VILLAMIL, P.  and  EREMEEV, V.. Evolution of quantum correlations of two qubits in a cavity with biphotonic dissipation. Ciencia en Desarrollo [online]. 2019, vol.10, n.1, pp.49-55. ISSN 0121-7488.  https://doi.org/10.19053/01217488.v10.n1.2019.8411.

In this work we study the evolution of quantum correlations in a Tavis-Cummings model that consists of two qubits and a single quantized mode of the electromagnetic field. The processes of emission / absorption of a single photon and of two correlated photons are considered for each of the qubits. The model is studied taking into account uniphotonic and biphotonic dissipations, through a cavity that interacts with a thermal reservoir. The numerical solution of a Lindblad master equation allows us to make a description of the evolution of quantum correlations, quantum entanglement and quantum discord, as a function of time for an atomic state type superposition. It is shown that the different results of the quantum correlations present qualitatively different behaviors in their evolution.

Keywords : Quantum correlations; Tavis-Cummings model; Lindblad master equation; uniphotonic dissipation; biphotonic dissipation.

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