# Continuous operation of a one-way quantum key distribution system over installed telecom fibre.

@article{Yuan2005ContinuousOO, title={Continuous operation of a one-way quantum key distribution system over installed telecom fibre.}, author={Zhiliang Yuan and Andrew J. Shields}, journal={Optics express}, year={2005}, volume={13 2}, pages={ 660-5 } }

We demonstrate a robust, compact and automated quantum key distribution system, based upon a one-way Mach-Zender interferometer, which is actively compensated for temporal drifts in the photon phase and polarization. The system gives a superior performance to passive compensation schemes with an average quantum bit error rate of 0.87% and a duty cycle of 99.6% for a continuous quantum key distribution session of 19 hours over a 20.3km installed telecom fibre. The results suggest that actively…

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