Universal decoherence induced by an environmental quantum phase transition

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dc.creatorCucchietti, Fernando Martin
dc.creatorFernandez-Vidal, Sonia
dc.creatorPaz, Juan Pablo
dc.date2006-04-18
dc.date.accessioned2026-07-07T07:53:58Z
dc.date.available2026-07-07T07:53:58Z
dc.descriptionDecoherence induced by coupling a system with an environment may display universal features. Here we demostrate that when the coupling to the system drives a quantum phase transition in the environment, the temporal decay of quantum coherences in the system is Gaussian with a width independent of the system-environment coupling strength. The existence of this effect opens the way for a new type of quantum simulation algorithm, where a single qubit is used to detect a quantum phase transition. We discuss possible implementations of such algorithm and we relate our results to available data on universal decoherence in NMR echo experiments.
dc.identifierhttps://arxiv.org/abs/quant-ph/0604136
dc.identifierhttp://arxiv.org/abs/quant-ph/0604136
dc.identifierPhys. Rev. A 75, 032337 (2007)
dc.identifierdoi:10.1103/PhysRevA.75.032337
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126425
dc.subjectQuantum Physics
dc.titleUniversal decoherence induced by an environmental quantum phase transition
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