CERN Accelerating science

Article
Title	4-Dimensional Quantum Key Distribution Protocol over 52-km Deployed Multicore Fibre
Author(s)	Zahidy, M (Denmark, Tech. U.) ; Ribezzo, D (CNR, INO, Pisa ; Naples U.) ; Lazzari, C De (CERN) ; Vagniluca, I (CERN) ; Biagi, N (CERN) ; Occhipinti, T (CERN) ; Oxenløwe, L K (Denmark, Tech. U.) ; Galili, M (Denmark, Tech. U.) ; Hayashi, T (Sumitomo, Hiratsuka) ; Antonelli, C (INFN, Aquila ; L'Aquila U. ; Jefferson Lab) ; Mecozzi, A (INFN, Aquila ; L'Aquila U. ; Jefferson Lab) ; Zavatta, A (CNR, INO, Pisa ; CERN) ; Bacco, D (CERN ; Florence U. ; INFN, Florence)
Publication	2022
Number of pages	4
In:	European Conference on Optical Communication (ECOC 2022), Basel, Switzerland, 18 - 22 Sep 2022
Subject category	Quantum Technology
Abstract	We demonstrate a 4-dimensional path-encoded QKD system over a 52-km multi-core fieldinstalled fibre. The 4D-QKD has a 68.5 kbit/s secret key rate, which is 118% higher than the equivalent 2D-QKD over the same link, owing to the higher dimensionality and greater noise resilience.
Copyright/License	© 2022-2025 The Author(s)

Corresponding record in: Inspire