Experimental Connection between the Instrumental and Bell Inequalities

Agresti, Iris; Carvacho, Gonzalo; Poderini, Davide; Aolita, Leandro; Araújo, Rafael Chaves Souto; Sciarrino, Fabio

Experimental Connection between the Instrumental and Bell Inequalities

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dc.contributor.author	Agresti, Iris
dc.contributor.author	Carvacho, Gonzalo
dc.contributor.author	Poderini, Davide
dc.contributor.author	Aolita, Leandro
dc.contributor.author	Araújo, Rafael Chaves Souto
dc.contributor.author	Sciarrino, Fabio
dc.date.accessioned	2020-09-28T12:26:23Z
dc.date.available	2020-09-28T12:26:23Z
dc.date.issued	2019-07-18
dc.description.resumo	An investigated process can be studied in terms of the causal relations among the involved variables, representing it as a causal model. Some causal models are particularly relevant, since they can be tested through mathematical constraints between the joint probability distributions of the observables. This is a valuable tool because, if some data violates the constraints of a causal model, the implication is that the observed statistics is not compatible with that causal structure. Strikingly, when non-classical correlations come to play, a discrepancy between classical and quantum causal predictions can arise, producing a quantum violation of the classical causal constraints. The simplest scenario admitting such quantum violation is given by the instrumental causal processes. Here, we experimentally violate an instrumental test on a photonic platform and show how the quantum correlations violating the CHSH inequality can be mapped into correlations violating an instrumental test, despite the different forms of non-locality they display. Indeed, starting from a Bell-like scenario, we recover the violation of the instrumental scenario through a map between the two behaviours, which includes a post-selection of data and then we test an alternative way to violate the CHSH inequality, adopting the instrumental process platform	pt_BR
dc.identifier.citation	AGRESTI, Iris; CARVACHO, Gonzalo; PODERINI, Davide; AOLITA, Leandro; CHAVES, Rafael; SCIARRINO, Fabio. Experimental Connection between the Instrumental and Bell Inequalities. Proceedings, [s.l.], v. 12, n. 1, p. 27, 18 jul. 2019. Disponível em: https://www.mdpi.com/2504-3900/12/1/27. Acesso em: 15 set. 2020. http://dx.doi.org/10.3390/proceedings2019012027.	pt_BR
dc.identifier.doi	10.3390/proceedings2019012027
dc.identifier.issn	2504-3900
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30203
dc.language	en	pt_BR
dc.publisher	Multidisciplinary Digital Publishing	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Quantum information	pt_BR
dc.subject	Quantum causality	pt_BR
dc.subject	Causal inference	pt_BR
dc.subject	Quantum violation	pt_BR
dc.subject	Instrumental process	pt_BR
dc.subject	Instrumental inequalities	pt_BR
dc.subject	chsh inequality	pt_BR
dc.title	Experimental Connection between the Instrumental and Bell Inequalities	pt_BR
dc.type	article	pt_BR