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dc.contributor.authorWheatley, T.en_US
dc.contributor.authorBerry, D.en_US
dc.contributor.authorYonezawa, H.en_US
dc.contributor.authorNakane, D.en_US
dc.contributor.authorArao, H.en_US
dc.contributor.authorPope, D.en_US
dc.contributor.authorRalph, T.en_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.authorFurusawa, A.en_US
dc.contributor.authorHuntington, E.en_US
dc.date.accessioned2017-05-03T11:51:27Z
dc.date.available2017-05-03T11:51:27Z
dc.date.issued2010en_US
dc.date.modified2010-09-01T08:08:28Z
dc.identifier.issn00319007en_US
dc.identifier.doi10.1103/PhysRevLett.104.093601en_AU
dc.identifier.urihttp://hdl.handle.net/10072/33167
dc.description.abstractQuantum parameter estimation has many applications, from gravitational wave detection to quantum key distribution. The most commonly used technique for this type of estimation is quantum filtering, using only past observations. We present the first experimental demonstration of quantum smoothing, a time-symmetric technique that uses past and future observations, for quantum parameter estimation. We consider both adaptive and nonadaptive quantum smoothing, and show that both are better than their filtered counterparts. For the problem of estimating a stochastically varying phase shift on a coherent beam, our theory predicts that adaptive quantum smoothing (the best scheme) gives an estimate with a mean-square error up to 2v2 times smaller than nonadaptive filtering (the standard quantum limit). The experimentally measured improvement is 2.24ᰮ14.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent242476 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherAmerican Physical Societyen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom093601-1en_US
dc.relation.ispartofpageto093601-4en_US
dc.relation.ispartofissue9en_US
dc.relation.ispartofjournalPhysical Review Lettersen_US
dc.relation.ispartofvolume104en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchQuantum Opticsen_US
dc.subject.fieldofresearchcode020604en_US
dc.titleAdaptive Optical Phase Estimation Using Time-Symmetric Quantum Smoothingen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2010 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2010
gro.hasfulltextFull Text


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