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dc.contributor.authorHuelga, S.F.
dc.contributor.authorMacchiavello, C.
dc.contributor.authorPellizzari, T.
dc.contributor.authorEkert, A.K.
dc.contributor.authorPlenio, M.B.
dc.contributor.authorCirac, J.
dc.date.accessioned2007-11-09T09:51:19Z
dc.date.available2007-11-09T09:51:19Z
dc.date.issued1997
dc.identifier.citationHuelga , S F , Macchiavello , C , Pellizzari , T , Ekert , A K , Plenio , M B & Cirac , J 1997 , ' Improvement of frequency standards with quantum entanglement ' , Physical Review Letters , vol. 79 , no. 20 , pp. 3865-68 . https://doi.org/10.1103/PhysRevLett.79.3865
dc.identifier.issn0031-9007
dc.identifier.otherPURE: 169031
dc.identifier.otherPURE UUID: 7bbce2ec-5abf-4d86-a343-5706d9e5923f
dc.identifier.otherdspace: 2299/1048
dc.identifier.otherScopus: 4243348744
dc.identifier.urihttp://hdl.handle.net/2299/1048
dc.descriptionOriginal article can be found at: http://prola.aps.org/--Copyright American Physical Society DOI : 10.1103/PhysRevLett.79.3865
dc.description.abstractThe optimal precision of frequency measurements in the presence of decoherence is discussed. We analyse different preparations of n two-level systems as well as different measurements procedures. We show that standard Ramsey spec- troscopy on uncorrelated atoms and optimal measurements on maximally entangled states provide the same resolution. The best resolution is achieved using partially entangled preparations with a high degree of symmetry.en
dc.language.isoeng
dc.relation.ispartofPhysical Review Letters
dc.titleImprovement of frequency standards with quantum entanglementen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1103/PhysRevLett.79.3865
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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