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dc.contributor.authorRivas, A.
dc.contributor.authorLuis, A.
dc.date.accessioned2009-06-01T08:48:24Z
dc.date.available2009-06-01T08:48:24Z
dc.date.issued2008
dc.identifier.citationRivas , A & Luis , A 2008 , ' Intrinsic metrological resolution as a distance measure and nonclassical light ' , Physical Review A , vol. 063813 . https://doi.org/10.1103/PhysRevA.77.063813
dc.identifier.issn1050-2947
dc.identifier.otherPURE: 171415
dc.identifier.otherPURE UUID: 22eaa4aa-a64e-489b-a07a-db1631a12957
dc.identifier.otherdspace: 2299/3449
dc.identifier.otherScopus: 45249092132
dc.identifier.urihttp://hdl.handle.net/2299/3449
dc.descriptionOriginal article can be found at: http://pra.aps.org/ Copyright American Physical Society. DOI: 10.1103/PhysRevA.77.063813
dc.description.abstractWe elaborate on a Hilbert-Schmidt distance measure assessing the intrinsic metrological accuracy in the detection of signals imprinted on quantum probe states by signal-dependent transformations. For small signals this leads to a probe-transformation measure Λ fully symmetric on the probe ρ and the generator G of the transformation Λ(ρ,G)=Λ(G,ρ). Although Λ can be regarded as a generalization of variance, we show that no uncertainty relation holds for the product of measures corresponding to complementary generators. We show that all states with resolution larger than coherent states are nonclassical. We apply this formalism to feasible probes and transformations.en
dc.language.isoeng
dc.relation.ispartofPhysical Review A
dc.rightsOpen
dc.titleIntrinsic metrological resolution as a distance measure and nonclassical lighten
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2008
rioxxterms.versionofrecordhttps://doi.org/10.1103/PhysRevA.77.063813
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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