Continuous quantum measurement with independent detector cross-correlations

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dc.creatorJordan, Andrew N.
dc.creatorButtiker, Markus
dc.date2005-05-02
dc.date.accessioned2026-07-07T06:23:17Z
dc.date.available2026-07-07T06:23:17Z
dc.descriptionWe investigate the advantages of using two independent, linear detectors for continuous quantum measurement. For single-shot quantum measurement, the measurement is maximally efficient if the detectors are twins. For weak continuous measurement, cross-correlations allow a violation of the Korotkov-Averin bound for the detector's signal-to-noise ratio. A vanishing noise background provides a nontrivial test of ideal independent quantum detectors. We further investigate the correlations of non-commuting operators, and consider possible deviations from the independent detector model for mesoscopic conductors coupled by the screened Coulomb interaction.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0505044
dc.identifierhttp://arxiv.org/abs/cond-mat/0505044
dc.identifierPhys. Rev. Lett. 95, 220401 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.220401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96180
dc.subjectMesoscale and Nanoscale Physics
dc.subjectQuantum Physics
dc.titleContinuous quantum measurement with independent detector cross-correlations
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