Quantum violation of local causality in an urban network using hybrid photonic technologies

Gonzalo Carvacho; Emanuele Roccia; Mauro Valeri; Francesco Basso Basset; Davide Poderini; Claudio Pardo; Emanuele Polino; Lorenzo Carosini; Michele B. Rota; Julia Neuwirth; Saimon Covre da Silva; Armando Rastelli; Nicolò Spagnolo; Rafael Chaves; Rinaldo Trotta; Fabio Sciarrino

doi:10.1117/12.2655118

9 March 2023 Quantum violation of local causality in an urban network using hybrid photonic technologies

Gonzalo Carvacho, Emanuele Roccia, Mauro Valeri, Francesco Basso Basset, Davide Poderini, Claudio Pardo, Emanuele Polino, Lorenzo Carosini, Michele B. Rota, Julia Neuwirth, Saimon Covre da Silva, Armando Rastelli, Nicolò Spagnolo, Rafael Chaves, Rinaldo Trotta, Fabio Sciarrino

Author Affiliations +

Proceedings Volume PC12446, Quantum Computing, Communication, and Simulation III; PC124460Q (2023) https://doi.org/10.1117/12.2655118
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

Quantum networks are fundamental for communication protocols and their implementation and validation become hard as the network's complexity increases. In this talk, we show the experimental implementation of a hybrid network exploiting different technologies a quantum dot and a nonlinear crystal. The network is used to share a photonic entangled state among three nodes connected through a 270 m free-space channel and fiber links. We also demonstrate the non-local behavior of the implemented network through the violation of a Bell-like Inequality. Our results pave the way toward the realization of more complex networks and the implementation of quantum communication protocols in urban environments, leveraging the capabilities of hybrid-photonic technologies.

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Gonzalo Carvacho, Emanuele Roccia, Mauro Valeri, Francesco Basso Basset, Davide Poderini, Claudio Pardo, Emanuele Polino, Lorenzo Carosini, Michele B. Rota, Julia Neuwirth, Saimon Covre da Silva, Armando Rastelli, Nicolò Spagnolo, Rafael Chaves, Rinaldo Trotta, and Fabio Sciarrino "Quantum violation of local causality in an urban network using hybrid photonic technologies", Proc. SPIE PC12446, Quantum Computing, Communication, and Simulation III, PC124460Q (9 March 2023); https://doi.org/10.1117/12.2655118

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KEYWORDS

Photonic crystal devices

Photonic crystals

Quantum communications

Nonlinear crystals

Photonic crystal fibers

Photons

Quantum dots

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