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dc.contributor.authorCavalcanti, Ericen_US
dc.contributor.authorDrummond, P.en_US
dc.contributor.authorBachor, H.en_US
dc.contributor.authorReid, M.en_US
dc.contributor.editorMartijn de Sterkeen_US
dc.date.accessioned2017-05-03T15:27:45Z
dc.date.available2017-05-03T15:27:45Z
dc.date.issued2009en_US
dc.date.modified2014-05-15T22:17:29Z
dc.identifier.issn1094-4087en_US
dc.identifier.doi10.1364/OE.17.018693en_US
dc.identifier.urihttp://hdl.handle.net/10072/26817
dc.description.abstractWe obtain criteria for entanglement and the EPR paradox for spin-entangled particles and analyse the effects of decoherence caused by absorption and state purity errors. For a two qubit photonic state, entanglement can occur for all transmission efficiencies. In this case, the state preparation purity must be above a threshold value. However, Bohm's spin EPR paradox can be achieved only above a critical level of loss. We calculate a required efficiency of 58%, which appears achievable with current quantum optical technologies. For a macroscopic number of particles prepared in a correlated state, spin entanglement and the EPR paradox can be demonstrated using our criteria for efficiencies ? > 1/3 and ? > 2/3 respectively. This indicates a surprising insensitivity to loss decoherence, in a macroscopic system of ultra-cold atoms or photons.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent163875 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherOptical Society of Americaen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom18693en_US
dc.relation.ispartofpageto18702en_US
dc.relation.ispartofissue21en_US
dc.relation.ispartofjournalOptics Expressen_US
dc.relation.ispartofvolume17en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchQuantum Information, Computation and Communicationen_US
dc.subject.fieldofresearchQuantum Opticsen_US
dc.subject.fieldofresearchcode020603en_US
dc.subject.fieldofresearchcode020604en_US
dc.titleSpin entanglement, decoherence and Bohm’s EPR paradoxen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2009 OSA. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: dx.doi.org/10.1364/OE.17.018693. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.en_US
gro.date.issued2009
gro.hasfulltextFull Text


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