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dc.contributor.authorW. Spekkens, Roberten_US
dc.contributor.authorBuzacott, Danielen_US
dc.contributor.authorKeehn, Anthonyen_US
dc.contributor.authorToner, Benen_US
dc.contributor.authorPryde, Geoffen_US
dc.date.accessioned2017-05-03T15:07:57Z
dc.date.available2017-05-03T15:07:57Z
dc.date.issued2009en_US
dc.date.modified2010-08-27T06:58:03Z
dc.identifier.issn00319007en_US
dc.identifier.doi10.1103/PhysRevLett.102.010401en_AU
dc.identifier.urihttp://hdl.handle.net/10072/30970
dc.description.abstractIn a noncontextual hidden variable model of quantum theory, hidden variables determine the outcomes of every measurement in a manner that is independent of how the measurement is implemented. Using a generalization of this notion to arbitrary operational theories and to preparation procedures, we demonstrate that a particular two-party information-processing task, "parity-oblivious multiplexing," is powered by contextuality in the sense that there is a limit to how well any theory described by a noncontextual hidden variable model can perform. This bound constitutes a "noncontextuality inequality" that is violated by quantum theory. We report an experimental violation of this inequality in good agreement with the quantum predictions. The experimental results also provide the first demonstration of 2-to-1 and 3-to-1 quantum random access codes.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent199785 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherAmerican Physical Societyen_US
dc.publisher.placeUSAen_US
dc.publisher.urihttp://prl.aps.org/en_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom010401-1en_US
dc.relation.ispartofpageto010401-4en_US
dc.relation.ispartofissue1en_US
dc.relation.ispartofjournalPhysical Review Lettersen_US
dc.relation.ispartofvolume102en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode240402en_US
dc.titlePreparation Contextuality Powers Parity-Oblivious Multiplexingen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2009 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.issued2009
gro.hasfulltextFull Text


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