Parametrization of the feedback Hamiltonian realizing a pure steady state

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dc.creatorYamamoto, Naoki
dc.date2006-03-06
dc.date.accessioned2026-07-07T07:07:57Z
dc.date.available2026-07-07T07:07:57Z
dc.descriptionFeedback control is expected to considerably protect quantum states against decoherence caused by interaction between the system and environment. Especially, Markovian feedback scheme developed by Wiseman can modify the properties of decoherence and eventually recover the purity of the steadystate of the corresponding master equation. This paper provides a condition for which the modified master equation has a pure steady state. By applying this condition to a two-qubit system, we obtain a complete parametrization of the feedback Hamiltonian such that the steady state becomes a maximally entangled state.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/quant-ph/0603040
dc.identifierhttp://arxiv.org/abs/quant-ph/0603040
dc.identifierPhysical Review A 72, 024104 (2005)
dc.identifierdoi:10.1103/PhysRevA.72.024104
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110584
dc.subjectQuantum Physics
dc.titleParametrization of the feedback Hamiltonian realizing a pure steady state
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