Idioma:

Decoherence induced by a phase-damping reservoir

Angelo, Renato M. ; Cardoso, E. S. ; Furuya, K. ; Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas, Caixa Postale 6165, CEP 13083-970, Campinas, Sao Paulo

Physical review. A, Atomic, molecular, and optical physics, 2006-06, Vol.73 (6)

Texto completo disponível

Citações Citado por

Título:
Decoherence induced by a phase-damping reservoir
Autor: Angelo, Renato M. ; Cardoso, E. S. ; Furuya, K. ; Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas, Caixa Postale 6165, CEP 13083-970, Campinas, Sao Paulo
Assuntos: ATOMIC AND MOLECULAR PHYSICS ; BOSONS ; DAMPING ; DECAY ; DISTRIBUTION ; GAUSS FUNCTION ; QUANTUM DECOHERENCE ; QUANTUM ENTANGLEMENT ; THERMODYNAMICS
É parte de: Physical review. A, Atomic, molecular, and optical physics, 2006-06, Vol.73 (6)
Descrição: A phase damping reservoir composed by N-bosons coupled to a system of interest through a cross-Kerr interaction is proposed and its effects on quantum superpositions are investigated. By means of analytical calculations we show that: (i) the reservoir induces a Gaussian decay of quantum coherences, and (ii) the inherent incommensurate character of the spectral distribution yields irreversibility. A state-independent decoherence time and a master equation are both derived analytically. These results, which have been extended for the thermodynamic limit, show that nondissipative decoherence can be suitably contemplated within the environment-induced decoherence (EID) approach. Finally, it is shown that the same mechanism yielding decoherence are also responsible for inducing dynamical disentanglement.
Editor: United States
Idioma: Inglês

Links

Voltar para lista de resultados