Bang-Bang control of a qubit coupled to a quantum critical spin bath

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dc.creatorRossini, Davide
dc.creatorFacchi, Paolo
dc.creatorFazio, Rosario
dc.creatorFlorio, Giuseppe
dc.creatorLidar, Daniel A.
dc.creatorPascazio, Saverio
dc.creatorPlastina, Francesco
dc.creatorZanardi, Paolo
dc.date2008-02-20
dc.date2008-05-20
dc.date.accessioned2026-07-07T09:39:32Z
dc.date.available2026-07-07T09:39:32Z
dc.descriptionWe analytically and numerically study the effects of pulsed control on the decoherence of a qubit coupled to a quantum spin bath. When the environment is critical, decoherence is faster and we show that the control is relatively more effective. Two coupling models are investigated, namely a qubit coupled to a bath via a single link and a spin star model, yielding results that are similar and consistent.
dc.description10 pages, 4 figures, replaced with published version
dc.identifierhttps://arxiv.org/abs/0802.2859
dc.identifierhttp://arxiv.org/abs/0802.2859
dc.identifierPhys. Rev. A 77, 052112 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.052112
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161208
dc.subjectQuantum Physics
dc.titleBang-Bang control of a qubit coupled to a quantum critical spin bath
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