Evolution of quantum correlations of two qubits in a cavity with biphotonic dissipation

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 unifotonic 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.

• Fecha de publicación: 2018
• Institución: Universidad Pedagógica y Tecnológica de Colombia
• Repositorio: RiUPTC: Repositorio Institucional UPTC
• Idioma: spa
• OAI Identifier: oai:repositorio.uptc.edu.co:001/15258
• Acceso en línea: https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/8411; https://repositorio.uptc.edu.co/handle/001/15258
• Palabra clave: Correlaciones cuánticas; modelo Tavis - Cummings; ecuación maestra Lindblad; disipación unifotónica; disipación bifotónica; Mecánica cuántica; Quantum correlations; Tavis - Cummings model; Lindblad master equation; unifotonic dissipation; biphotonic dissipation; Quantum Mechanic
• License: http://purl.org/coar/access_right/c_abf2