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Stucki D, Walenta N, Vannel F, Thew RT, Gisin N, Zbinden H, et al. High rate long-distance quantum key distribution over 250 km of ultra low loss fibres. New J. Phys.. 2009;11(7):075003.
Abstract: We present a fully automated quantum key distribution prototype running at 625 MHz clock rate. Taking advantage of ultra low loss fibres and low-noise superconducting detectors, we can distribute 6,000 secret bits per second over 100 km and 15 bits per second over 250km.
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