Entanglement and parametric resonance in driven quantum systems

We study the relationship between entanglement and parametric resonance in a system of two coupled time-dependent oscillators. As a measure of bipartite entanglement, we calculate the linear entropy for the reduced density operator, from which we study the entanglement dynamics. In particular, we fi...

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Autores:
Tipo de recurso:
Fecha de publicación:
2010
Institución:
Ministerio de Ciencia, Tecnología e Innovación
Repositorio:
Repositorio Minciencias
Idioma:
eng
OAI Identifier:
oai:repositorio.minciencias.gov.co:20.500.14143/21666
Acceso en línea:
https://repositorio.minciencias.gov.co/handle/20.500.14143/21666
Palabra clave:
Fluorescencia
Propiedades químicas
Química cuántica
Química física
Números cuánticos
Electrónica molecular
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License
http://purl.org/coar/access_right/c_f1cf
Description
Summary:We study the relationship between entanglement and parametric resonance in a system of two coupled time-dependent oscillators. As a measure of bipartite entanglement, we calculate the linear entropy for the reduced density operator, from which we study the entanglement dynamics. In particular, we find that the bipartite entanglement increases in time up to a maximal mixing scenario, when the set of auxiliary dynamical parameters are under parametric resonance. Moreover, we obtain a closed relationship between the correlations in the ground state, the localisation of the Wigner function in phase space, and the localisation of the wave function of the total system.