Decoherence by engineered quantum baths

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dc.creatorRossini, Davide
dc.creatorCalarco, Tommaso
dc.creatorGiovannetti, Vittorio
dc.creatorMontangero, Simone
dc.creatorFazio, Rosario
dc.date2006-05-05
dc.date.accessioned2026-07-07T08:12:33Z
dc.date.available2026-07-07T08:12:33Z
dc.descriptionWe introduce, and determine decoherence for, a wide class of non-trivial quantum spin baths which embrace Ising, XY and Heisenberg universality classes coupled to a two-level system. For the XY and Ising universality classes we provide an exact expression for the decay of the loss of coherence beyond the case of a central spin coupled uniformly to all the spins of the baths which has been discussed so far in the literature. In the case of the Heisenberg spin bath we study the decoherence by means of the time-dependent density matrix renormalization group. We show how these baths can be engineered, by using atoms in optical lattices.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0605051
dc.identifierhttp://arxiv.org/abs/quant-ph/0605051
dc.identifierJ. Phys. A: Math. Theor. 40 (2007) 8033-8040
dc.identifierdoi:10.1088/1751-8113/40/28/S12
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132493
dc.subjectQuantum Physics
dc.subjectOther Condensed Matter
dc.titleDecoherence by engineered quantum baths
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