Optimal estimation of quantum observables

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dc.creatorD'Ariano, Giacomo Mauro
dc.creatorGiovannetti, Vittorio
dc.creatorPerinotti, Paolo
dc.date2005-10-24
dc.date.accessioned2026-07-07T07:52:56Z
dc.date.available2026-07-07T07:52:56Z
dc.descriptionWe consider the problem of estimating the ensemble average of an observable on an ensemble of equally prepared identical quantum systems. We show that, among all kinds of measurements performed jointly on the copies, the optimal unbiased estimation is achieved by the usual procedure that consists in performing independent measurements of the observable on each system and averaging the measurement outcomes.
dc.descriptionSubmitted to J. Math Phys
dc.identifierhttps://arxiv.org/abs/quant-ph/0510187
dc.identifierhttp://arxiv.org/abs/quant-ph/0510187
dc.identifierJ. Math. Phys. 47 022102 (2006)
dc.identifierdoi:10.1063/1.2168122
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126067
dc.subjectQuantum Physics
dc.titleOptimal estimation of quantum observables
dc.typetext

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