Completely-Positive Non-Markovian Decoherence

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dc.creatorLee, Jinhyoung
dc.creatorKim, Inbo
dc.creatorMcAneney, Helen
dc.creatorKim, M. S.
dc.creatorAhn, Doyeol
dc.date2004-03-02
dc.date.accessioned2026-07-07T06:09:11Z
dc.date.available2026-07-07T06:09:11Z
dc.descriptionWe propose an effective Hamiltonian approach to investigate decoherence of a quantum system in a non-Markovian reservoir, naturally imposing the complete positivity on the reduced dynamics of the system. The formalism is based on the notion of an effective reservoir, i.e., certain collective degrees of freedom in the reservoir that are responsible for the decoherence. As examples for completely positive decoherence, we present three typical decoherence processes for a qubit such as dephasing, depolarizing, and amplitude-damping. The effects of the non-Markovian decoherence are compared to the Markovian decoherence.
dc.description8 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/quant-ph/0403018
dc.identifierhttp://arxiv.org/abs/quant-ph/0403018
dc.identifierPhys. Rev. A 70, 024301 (2004)
dc.identifierdoi:10.1103/PhysRevA.70.024301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91878
dc.subjectQuantum Physics
dc.titleCompletely-Positive Non-Markovian Decoherence
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