Field trial of a three-state quantum key distribution scheme in the Florence metropolitan area
Authors: Bacco D., Vagniluca I., Da Lio B., Biagi N., Della Frera A., Calonico D., Toninelli C., Cataliotti F.S., Bellini M., Oxenløwe L.K., Zavatta A.
Autors Affiliation: CoE SPOC, DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark;
Università degli Studi di Napoli Federico II, Napoli, Italy; CNR-INO, Istituto Nazionale di Ottica, Firenze, Italy; Micro
Photon Devices S.r.l., Bolzano, Italy; I.N.Ri.M., Istituto Nazionale di Ricerca Metrologica, Torino, Italy; LENS, Università di Firenze, Firenze, Italy
Abstract: In-field demonstrations in real-world scenarios boost the development of a rising technology towards its integration in existing infrastructures. Although quantum key distribution (QKD) devices are already adopted outside the laboratories, current field implementations still suffer from high costs and low performances, preventing this emerging technology from a large-scale deployment in telecommunication networks. Here we present a simple, practical and efficient QKD scheme with finite-key analysis, performed over a 21 dB-losses fiber link installed in the metropolitan area of Florence (Italy). Coexistence of quantum and weak classical communication is also demonstrated by transmitting an optical synchronization signal through the same fiber link.
Journal/Review: EPJ QUANTUM TECHNOLOGY
Volume: 6 (1) Pages from: 5-1 to: 5-8
KeyWords: Quantum key distribution, quantum communicationsDOI: 10.1140/epjqt/s40507-019-0075-xCitations: 9data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-02-28References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here