QKD field-trial in Padua: a resource-effective implementation with the iPOGNAC encoder

Marco Avesani; Luca Calderaro; Giulio Foletto; Costantino Agnesi; Francesco Picciariello; Francesco B. L. Santagiustina; Alessia Scriminich; Andrea Stanco; Francesco Vedovato; Mujtaba Zahidy; Giuseppe Vallone; Paolo Villoresi

doi:10.1117/12.2607215

1 March 2022 QKD field-trial in Padua: a resource-effective implementation with the iPOGNAC encoder

Marco Avesani, Luca Calderaro, Giulio Foletto, Costantino Agnesi, Francesco Picciariello, Francesco B. L. Santagiustina, Alessia Scriminich, Andrea Stanco, Francesco Vedovato, Mujtaba Zahidy, Giuseppe Vallone, Paolo Villoresi

Author Affiliations +

Proceedings Volume 12015, Quantum Computing, Communication, and Simulation II; 120150A (2022) https://doi.org/10.1117/12.2607215
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Quantum key distribution (QKD) is one of the most mature among the quantum technologies that allows two remote users to generate secret keys with unconditional security. To increase its adoption, simple, low-cost, and robust systems are necessary, together with demonstrations in real environments. Here, we present a QKD field-trial over optical fibers deployed in the city center of Padua, Italy. Our system exploits two key technologies developed by our group: a low-error, self-stabilized polarization encoder, called iPOGNAC, and a novel synchronization technique, called Qubit4Sync, which allows us to minimize the experimental complexity of our system.

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Marco Avesani, Luca Calderaro, Giulio Foletto, Costantino Agnesi, Francesco Picciariello, Francesco B. L. Santagiustina, Alessia Scriminich, Andrea Stanco, Francesco Vedovato, Mujtaba Zahidy, Giuseppe Vallone, and Paolo Villoresi "QKD field-trial in Padua: a resource-effective implementation with the iPOGNAC encoder", Proc. SPIE 12015, Quantum Computing, Communication, and Simulation II, 120150A (1 March 2022); https://doi.org/10.1117/12.2607215

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