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Entanglement dynamics of nonidentical oscillators under decohering environments

AutorGalve, Fernando ; Giorgi, Gian Luca ; Zambrini, Roberta
Fecha de publicación2010
EditorAmerican Physical Society
CitaciónPhysical Review A 81: 062117 (2010)
ResumenWe study the evolution of entanglement for a pair of coupled nonidentical harmonic oscillators in contact with an environment. For both cases of a common bath and of two separate baths for each of the oscillators, a full master equation is provided without rotating-wave approximation. The entanglement dynamics is analyzed as a function of the diversity between the oscillators frequencies and their positive or negative mutual coupling and also the correlation between the occupation numbers. The singular effect of the resonance condition (identical oscillators) and its relationship with the possibility of preserving asymptotic entanglement are discussed. The importance of the bath s memory properties is investigated by comparing Markovian and non-Markovian evolutions.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevA.81.062117
URIhttp://hdl.handle.net/10261/44637
DOI10.1103/PhysRevA.81.062117
ISSN1050-2947
E-ISSN1094-1622
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