Implementation of continuous variable quantum cryptography in optical fibres using a go-&-return configuration

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105396We demonstrate an implementation of quantum key distribution with continuous variables based on a go-&-return configuration over distances up to 14km. This configuration leads to self-compensation of polarisation and phase fluctuations. We observe a high degree of stability of our set-up over many hours.21 pages, 5 figures, 1 tableQuantum PhysicsImplementation of continuous variable quantum cryptography in optical fibres using a go-&-return configurationtext