Experimental test of nonlocal causality.

Ringbauer, M; Giarmatzi, C; Chaves, R; Costa, F; White, AG; Fedrizzi, A

Experimental test of nonlocal causality.

Ringbauer, M Giarmatzi, C

Chaves, R Costa, F White, AG Fedrizzi, A

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Publisher:: AMER ASSOC ADVANCEMENT SCIENCE
Publication Type:: Journal Article
Citation:: Sci Adv, 2016, 2, (8), pp. e1600162
Issue Date:: 2016-08

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Field	Value	Language
dc.contributor.author	Ringbauer, M
dc.contributor.author	Giarmatzi, C https://orcid.org/0000-0001-8254-2169
dc.contributor.author	Chaves, R
dc.contributor.author	Costa, F
dc.contributor.author	White, AG
dc.contributor.author	Fedrizzi, A
dc.date.accessioned	2022-08-15T22:15:56Z
dc.date.available	2016-07-11
dc.date.available	2022-08-15T22:15:56Z
dc.date.issued	2016-08
dc.identifier.citation	Sci Adv, 2016, 2, (8), pp. e1600162
dc.identifier.issn	2375-2548
dc.identifier.issn	2375-2548
dc.identifier.uri	http://hdl.handle.net/10453/160268
dc.description.abstract	Explaining observations in terms of causes and effects is central to empirical science. However, correlations between entangled quantum particles seem to defy such an explanation. This implies that some of the fundamental assumptions of causal explanations have to give way. We consider a relaxation of one of these assumptions, Bell's local causality, by allowing outcome dependence: a direct causal influence between the outcomes of measurements of remote parties. We use interventional data from a photonic experiment to bound the strength of this causal influence in a two-party Bell scenario, and observational data from a Bell-type inequality test for the considered models. Our results demonstrate the incompatibility of quantum mechanics with a broad class of nonlocal causal models, which includes Bell-local models as a special case. Recovering a classical causal picture of quantum correlations thus requires an even more radical modification of our classical notion of cause and effect.
dc.format	Electronic-eCollection
dc.language	eng
dc.publisher	AMER ASSOC ADVANCEMENT SCIENCE
dc.relation.ispartof	Sci Adv
dc.relation.isbasedon	10.1126/sciadv.1600162
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.mesh	Models, Theoretical
dc.subject.mesh	Optical Devices
dc.subject.mesh	Photons
dc.subject.mesh	Quantum Theory
dc.subject.mesh	Science
dc.subject.mesh	Photons
dc.subject.mesh	Quantum Theory
dc.subject.mesh	Science
dc.subject.mesh	Models, Theoretical
dc.subject.mesh	Optical Devices
dc.title	Experimental test of nonlocal causality.
dc.type	Journal Article
utslib.citation.volume	2
utslib.location.activity	United States
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	open_access	*
dc.date.updated	2022-08-15T22:15:55Z
pubs.issue	8
pubs.publication-status	Published online
pubs.volume	2
utslib.citation.issue	8

Abstract:

Explaining observations in terms of causes and effects is central to empirical science. However, correlations between entangled quantum particles seem to defy such an explanation. This implies that some of the fundamental assumptions of causal explanations have to give way. We consider a relaxation of one of these assumptions, Bell's local causality, by allowing outcome dependence: a direct causal influence between the outcomes of measurements of remote parties. We use interventional data from a photonic experiment to bound the strength of this causal influence in a two-party Bell scenario, and observational data from a Bell-type inequality test for the considered models. Our results demonstrate the incompatibility of quantum mechanics with a broad class of nonlocal causal models, which includes Bell-local models as a special case. Recovering a classical causal picture of quantum correlations thus requires an even more radical modification of our classical notion of cause and effect.

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http://hdl.handle.net/10453/160268