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

Matthieu Legre·Hugo Zbinden·Nicolas Gisin
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Abstract

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.

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Matthieu Legre, Hugo Zbinden, Nicolas Gisin. 2005-11-11. Implementation of continuous variable quantum cryptography in optical fibres using a go-&-return configuration. https://arxiv.org/abs/quant-ph/0511113

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