Clauser-Horne inequality and decoherence in mesoscopic conductors

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dc.creatorPrada, Elsa
dc.creatorTaddei, Fabio
dc.creatorFazio, Rosario
dc.date2005-05-24
dc.date2005-10-12
dc.date.accessioned2026-07-07T06:37:50Z
dc.date.available2026-07-07T06:37:50Z
dc.descriptionWe analyze the effect of decoherence on the violation of the Clauser-Horne (CH) inequality for the full electron counting statistics in a mesoscopic multiterminal conductor. Our setup consists of an entangler that emits a flux of entangled electrons into two conductors characterized by a scattering matrix and subject to decoherence. Loss of phase memory is modeled phenomenologically by introducing fictitious extra leads. The outgoing electrons are detected using spin-sensitive electron counters. Given a certain average number of incoming entangled electrons, the CH inequality is evaluated as a function of the numbers of detected particles and on the various quantities characterizing the scattering matrix. When decoherence is turned on, we show that the amount of violation of the CH inequality is effectively reduced. Interestingly we find that, by adjusting the parameters of the system, there exists a protected region of $Q$ values for which violation holds for arbitrary strong decoherence.
dc.description14 pages, 10 figures. Published version
dc.identifierhttps://arxiv.org/abs/cond-mat/0505579
dc.identifierhttp://arxiv.org/abs/cond-mat/0505579
dc.identifierPhys. Rev. B 72, 125333 (2005)
dc.identifierdoi:10.1103/PhysRevB.72.125333
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100533
dc.subjectMesoscale and Nanoscale Physics
dc.titleClauser-Horne inequality and decoherence in mesoscopic conductors
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