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dc.contributor.authorWittmann, Bernharden_US
dc.contributor.authorRamelow, Svenen_US
dc.contributor.authorSteinlechner, Fabianen_US
dc.contributor.authorLangford, Nathanen_US
dc.contributor.authorBrunner, Nicolasen_US
dc.contributor.authorWiseman, Howarden_US
dc.contributor.authorUrsin, Ruperten_US
dc.contributor.authorZeilinger, Antonen_US
dc.date.accessioned2017-05-03T11:50:49Z
dc.date.available2017-05-03T11:50:49Z
dc.date.issued2012en_US
dc.date.modified2013-06-03T00:10:11Z
dc.identifier.issn13672630en_US
dc.identifier.doi10.1088/1367-2630/14/5/053030en_US
dc.identifier.urihttp://hdl.handle.net/10072/46990
dc.description.abstractTests of the predictions of quantum mechanics for entangled systems have provided increasing evidence against local realistic theories. However, there remains the crucial challenge of simultaneously closing all major loopholes-the locality, freedom-of-choice and detection loopholes-in a single experiment. An important sub-class of local realistic theories can be tested with the concept of 'steering'. The term 'steering' was introduced by Schr椩nger in 1935 for the fact that entanglement would seem to allow an experimenter to remotely steer the state of a distant system as in the Einstein-Podolsky-Rosen (EPR) argument. Einstein called this 'spooky action at a distance'. EPR-steering has recently been rigorously formulated as a quantum information task opening it up to new experimental tests. Here, we present the first loophole-free demonstration of EPR-steering by violating three-setting quadratic steering inequality, tested with polarization-entangled photons shared between two distant laboratories. Our experiment demonstrates this effect while simultaneously closing all loopholes: both the locality loophole and a specific form of the freedom-of-choice loophole are closed by having a large separation of the parties and using fast quantum random number generators, and the fair-sampling loophole is closed by having high overall detection efficiency. Thereby, we exclude-for the first time loophole-free-an important class of local realistic theories considered by EPR. Besides its foundational importance, loophole-free steering also allows the distribution of quantum entanglement secure event in the presence of an untrusted party.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent1759530 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherIOP Publishing Ltden_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom053030-1en_US
dc.relation.ispartofpageto053030-12en_US
dc.relation.ispartofjournalNew Journal of Physicsen_US
dc.relation.ispartofvolume14en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchQuantum Information, Computation and Communicationen_US
dc.subject.fieldofresearchQuantum Physics not elsewhere classifieden_US
dc.subject.fieldofresearchcode020603en_US
dc.subject.fieldofresearchcode020699en_US
dc.titleLoophole-free Einstein–Podolsky–Rosen experiment via quantum steeringen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.description.notepublicPage numbers are not for citation purposes. Instead, this article has the unique article number of 053030.en_US
gro.rights.copyrightCopyright 2012 Institute of Physics Publishing. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_US
gro.date.issued2012
gro.hasfulltextFull Text


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