Show simple item record

dc.contributor.authorXiang, Guo-Yongen_US
dc.contributor.authorHiggins, Brendonen_US
dc.contributor.authorBerry, D.en_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.authorPryde, Geoffen_US
dc.date.accessioned2017-04-24T12:13:02Z
dc.date.available2017-04-24T12:13:02Z
dc.date.issued2011en_US
dc.date.modified2013-05-29T08:47:23Z
dc.identifier.issn17494885en_US
dc.identifier.doi10.1038/nphoton.2010.268en_US
dc.identifier.urihttp://hdl.handle.net/10072/37530
dc.description.abstractPrecise interferometric measurement is vital to many scientific and technological applications. Using quantum entanglement allows interferometric sensitivity that surpasses the shot-noise limit (SNL)1, 2. To date, experiments demonstrating entanglement-enhanced sub-SNL interferometry3, 4, 5, 6, and most theoretical treatments7, 8, 9, 10, 11, 12, 13, have addressed the goal of increasing signal-to-noise ratios. This is suitable for phase-sensing-detecting small variations about an already known phase. However, it is not sufficient for ab initio phase-estimation-making a self-contained determination of a phase that is initially completely unknown within the interval [0, 2p). Both tasks are important2, but not equivalent. To move from the sensing regime to the ab initio estimation regime requires a non-trivial phase-estimation algorithm14, 15, 16, 17. Here, we implement a 'bottom-up' approach, optimally utilizing the available entangled photon states, obtained by post-selection5, 6. This enables us to demonstrate sub-SNL ab initio estimation of an unknown phase by entanglement-enhanced optical interferometry.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent350025 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherNature Publishing Groupen_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom43en_US
dc.relation.ispartofpageto47en_US
dc.relation.ispartofissue1en_US
dc.relation.ispartofjournalNature Photonicsen_US
dc.relation.ispartofvolume5en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchOptical Physics not elsewhere classifieden_US
dc.subject.fieldofresearchcode020599en_US
dc.titleEntanglement-enhanced measurement of a completely unknown optical phaseen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, School of Natural Sciencesen_US
gro.rights.copyrightCopyright 2010 Nature Publishing Group. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.en_US
gro.date.issued2011
gro.hasfulltextFull Text


Files in this item

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record