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dc.contributor.authorSpekkens, Robert W
dc.contributor.authorBuzacott, DH
dc.contributor.authorKeehn, AJ
dc.contributor.authorToner, Ben
dc.contributor.authorPryde, GJ
dc.date.accessioned2017-05-03T15:07:57Z
dc.date.available2017-05-03T15:07:57Z
dc.date.issued2009
dc.date.modified2010-08-27T06:58:03Z
dc.identifier.issn0031-9007
dc.identifier.doi10.1103/PhysRevLett.102.010401
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.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent199785 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.publisher.placeUSA
dc.publisher.urihttp://prl.aps.org/
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom010401-1
dc.relation.ispartofpageto010401-4
dc.relation.ispartofissue1
dc.relation.ispartofjournalPhysical Review Letters
dc.relation.ispartofvolume102
dc.rights.retentionY
dc.subject.fieldofresearchMathematical sciences
dc.subject.fieldofresearchPhysical sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode49
dc.subject.fieldofresearchcode51
dc.subject.fieldofresearchcode40
dc.titlePreparation Contextuality Powers Parity-Oblivious Multiplexing
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 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.
gro.date.issued2009
gro.hasfulltextFull Text
gro.griffith.authorPryde, Geoff


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