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

Legre, Matthieu; Zbinden, Hugo; Gisin, Nicolas

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

Authors

Legre, Matthieu

Zbinden, Hugo

Gisin, Nicolas

Description

We 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 table