Quantum Information and Measurement (QIM)

Experimental non-locality in a quantum network

Gonzalo Carvacho, Francesco Andreoli, Luca Santodonato, Marco Bentivegna, Rafael Chaves, Fabio Sciarrino

Published Jan 1, 2017• 2 citations

Abstract

Using a photonic setup we investigate a quantum network consisting of three spatially separated nodes whose correlations are mediated by two independent sources. This scenario allows for the emergence of a new kind of non-local correlations that we experimentally witness by violating a novel Bell inequality. Our results provide the first experimental proof-of-principle of generalizations of Bell's theorem for networks, a topic that has attracted growing attention and promises a novel route for quantum communication protocols.

DOI: 10.1364/qim.2017.qw6b.1

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