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

Matthieu Legre , Hugo Zbinden , Nicolas Gisin

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classification 🪐 quant-ph

keywords configurationcontinuousimplementationquantumreturncryptographydegreedemonstrate

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

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