Experimental violation of n-locality in a star quantum network

Poderini, Davide; Agresti, Iris; Marchese, Guglielmo; Polino, Emanuele; Giordani, Taira; Suprano, Alessia; Valeri, Mauro; Milani, Giorgio; Spagnolo, Nicolò; Carvacho, Gonzalo; Araújo, Rafael Chaves Souto; Sciarrino, Fábio

Experimental violation of n-locality in a star quantum network

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dc.contributor.author	Poderini, Davide
dc.contributor.author	Agresti, Iris
dc.contributor.author	Marchese, Guglielmo
dc.contributor.author	Polino, Emanuele
dc.contributor.author	Giordani, Taira
dc.contributor.author	Suprano, Alessia
dc.contributor.author	Valeri, Mauro
dc.contributor.author	Milani, Giorgio
dc.contributor.author	Spagnolo, Nicolò
dc.contributor.author	Carvacho, Gonzalo
dc.contributor.author	Araújo, Rafael Chaves Souto
dc.contributor.author	Sciarrino, Fábio
dc.date.accessioned	2020-09-18T13:31:26Z
dc.date.available	2020-09-18T13:31:26Z
dc.date.issued	2020-05-18
dc.description.resumo	The launch of a satellite capable of distributing entanglement through long distances and the first loophole-free violation of Bell inequalities are milestones indicating a clear path for the establishment of quantum networks. However, nonlocality in networks with independent entanglement sources has only been experimentally verified in simple tripartite networks, via the violation of bilocality inequalities. Here, by using a scalable photonic platform, we implement star-shaped quantum networks consisting of up to five distant nodes and four independent entanglement sources. We exploit this platform to violate the chained n-locality inequality and thus witness, in a device-independent way, the emergence of nonlocal correlations among the nodes of the implemented networks. These results open new perspectives for quantum information processing applications in the relevant regime where the observed correlations are compatible with standard local hidden variable models but are nonclassical if the independence of the sources is taken into account	pt_BR
dc.identifier.citation	PODERINI, Davide; AGRESTI, Iris; MARCHESE, Guglielmo; POLINO, Emanuele; GIORDANI, Taira; SUPRANO, Alessia; VALERI, Mauro; MILANI, Giorgio; SPAGNOLO, Nicolò; CARVACHO, Gonzalo; CHAVES, Rafael; SCIARRINO, Fábio. Experimental violation of n-locality in a star quantum network. Nature Communications, [S.L.], v. 11, n. 1, p. 2467, 18 maio 2020. Disponível em: https://www.nature.com/articles/s41467-020-16189-6. Acesso em: 03 set. 2020. http://dx.doi.org/10.1038/s41467-020-16189-6.	pt_BR
dc.identifier.doi	10.1038/s41467-020-16189-6
dc.identifier.issn	2041-1723
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/30093
dc.language	en	pt_BR
dc.publisher	Nature Research	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Quantum networks	pt_BR
dc.title	Experimental violation of n-locality in a star quantum network	pt_BR
dc.type	article	pt_BR