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4 October 2022 Quantum nonlocality in an urban network combining SPDC- and quantum dot-based photonic hardware (Conference Presentation)
Francesco Basso Basset, Gonzalo Carvacho, Emanuele Roccia, Mauro Valeri, Davide Poderini, Claudio Pardo, Emanuele Polino, Lorenzo Carosini, Michele B. Rota, Julia Neuwirth, Saimon Filipe Covre da Silva, Armando Rastelli, Nicolò Spagnolo, Rafael Chaves, Fabio Sciarrino, Rinaldo Trotta
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Proceedings Volume PC12206, Quantum Nanophotonic Materials, Devices, and Systems 2022; PC1220601 (2022) https://doi.org/10.1117/12.2632610
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
The prospect of quantum networks is pushing technical advances in entangled photon generation, and different solutions have now the potential to coexist. After reviewing the development that led to implement entanglement-based quantum key distribution using a quantum dot—a technology motivated by the goal of on-demand operation—in an urban free-space optical link, we present its extension to a three-node quantum network including a source based on spontaneous parametric down conversion. Using separable measurements, we combine intrinsically independent sources to demonstrate a significant violation of a Bell-like inequality associated to nonlocal correlations in a tripartite hybrid network.
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Francesco Basso Basset, Gonzalo Carvacho, Emanuele Roccia, Mauro Valeri, Davide Poderini, Claudio Pardo, Emanuele Polino, Lorenzo Carosini, Michele B. Rota, Julia Neuwirth, Saimon Filipe Covre da Silva, Armando Rastelli, Nicolò Spagnolo, Rafael Chaves, Fabio Sciarrino, and Rinaldo Trotta "Quantum nonlocality in an urban network combining SPDC- and quantum dot-based photonic hardware (Conference Presentation)", Proc. SPIE PC12206, Quantum Nanophotonic Materials, Devices, and Systems 2022, PC1220601 (4 October 2022); https://doi.org/10.1117/12.2632610
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KEYWORDS
Photons
Free space
Free space optics
Gallium arsenide
Quantum dots
Quantum information
Quantum key distribution
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