Physics

Experimental violation of n-locality in a star quantum network

D. Poderini, I. Agresti, et al.

This groundbreaking research reveals an experiment that defies conventional boundaries by demonstrating nonlocal correlations in star-shaped quantum networks. Conducted by a team including Davide Poderini and Iris Agresti, the findings promise new horizons for quantum information processing applications where the interplay of source independence and entanglement challenges classical models.

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Abstract

The paper reports on an experiment that violates the chained n-locality inequality in star-shaped quantum networks with up to five nodes and four independent entanglement sources. This violation, achieved using a scalable photonic platform, demonstrates nonlocal correlations among the nodes in a device-independent way. The results open possibilities for quantum information processing applications where correlations are compatible with standard local hidden variable models but non-classical when source independence is considered.

Publisher

Nature Communications

Published On

May 18, 2020

Authors

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

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