Field Demonstration of Quantum Key Distribution Coexisting with 110-Tb/s Classical Transmission over Multi-Core Fibers

Wu, Qi; Ribezzo, D.; Di Sciullo, G.; Cocchi, S.; Shaji, D. A.; Zischler, L. A.; Luis, R.; Serena, P.; Lasagni, C.; Bononi, A.; Hayashi, T.; Gagliano, A.; Martelli, P.; Gatto, A.; Parolari, P.; Boffi, P.; Bacco, D.; Zavatta, A.; Zhu, Y.; Hu, W.; Xu, Z.; Shtaif, M.; Marotta, A.; Graziosi, F.; Mecozzi, A.; Antonelli, C.

doi:10.1109/ecoc66593.2025.11263014

We report, for the first time, a field demonstration of quantum key distribution coexisting with 110- Tb/s full C-band dense wavelength-division multiplexed coherent transmission over field-deployed uncou-pled-core multi-core fibers with a standard 125-μm cladding diameter in L'Aquila, Italy. Various coexistence configurations and transmission distances are evaluated.

Field Demonstration of Quantum Key Distribution Coexisting with 110-Tb/s Classical Transmission over Multi-Core Fibers

Wu, Qi;Ribezzo, D.;Di Sciullo, G.;Cocchi, S.;Shaji, D. A.;Zischler, L. A.;Luis, R.;Serena, P.;Lasagni, C.;Bononi, A.;Hayashi, T.;Gagliano, A.;Martelli, P.;Gatto, A.;Parolari, P.;Boffi, P.;Bacco, D.;Zavatta, A.;Zhu, Y.;Hu, W.;Xu, Z.;Shtaif, M.;Marotta, A.;Graziosi, F.;Mecozzi, A.;Antonelli, C.

2025-01-01

Abstract

We report, for the first time, a field demonstration of quantum key distribution coexisting with 110- Tb/s full C-band dense wavelength-division multiplexed coherent transmission over field-deployed uncou-pled-core multi-core fibers with a standard 125-μm cladding diameter in L'Aquila, Italy. Various coexistence configurations and transmission distances are evaluated.