Experimental activation of quantum nonlocality via a quantum network

Luis Villegas-Aguilar; Emanuele Polino; Sergei Slussarenko; Nora Tischler; Farzad Ghafari; Eric Cavalcanti; Geoff J. Pryde; Marco Túlio Quintino; Kiarn Laverick; Lynden K. Shalm

doi:10.1117/12.3028888

4 October 2024 Experimental activation of quantum nonlocality via a quantum network

Luis Villegas-Aguilar, Emanuele Polino, Sergei Slussarenko, Nora Tischler, Farzad Ghafari, Eric Cavalcanti, Geoff J. Pryde, Marco Túlio Quintino, Kiarn Laverick, Lynden K. Shalm

Author Affiliations +

Proceedings Volume PC13148, Quantum Communications and Quantum Imaging XXII; PC131480D (2024) https://doi.org/10.1117/12.3028888
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

Quantum nonlocality arising from entangled particles cannot be explained by any classical notion of local causality. In the standard Bell scenario with a source and two measurement stations, entangled states can lose their ability to exhibit nonlocality due to noisy conditions. Given the fundamental and technological significance of nonlocality and the fact that these noisy entangled states can naturally arise in practical situations, it is of utmost importance to unveil their nonlocality. Here, we demonstrate that nonlocal correlations can be generated from quantum states that cannot show nonlocality in bipartite Bell scenarios. We show how to robustly characterize these states and experimentally activate their nonlocality when embedded in a photonic network, by violating classical constraints in this quantum network. These results have implications in foundations of quantum nonlocality and direct applications to quantum technologies by significantly increasing the robustness of nonlocal correlations to noise.

Conference Presentation

Citation Download Citation

Luis Villegas-Aguilar, Emanuele Polino, Sergei Slussarenko, Nora Tischler, Farzad Ghafari, Eric Cavalcanti, Geoff J. Pryde, Marco Túlio Quintino, Kiarn Laverick, and Lynden K. Shalm "Experimental activation of quantum nonlocality via a quantum network", Proc. SPIE PC13148, Quantum Communications and Quantum Imaging XXII, PC131480D (4 October 2024); https://doi.org/10.1117/12.3028888

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