Unconditionally secure one-way quantum key distribution using decoy pulses

Details Unconditionally secure one-way quantum key distribution using decoy pulses Unconditionally secure one-way quantum key distribution using decoy pulses

2006-10-03

arxiv.org/abs/quant-ph/0610015v1

Appl. Phys. Lett. 90, 011118(2007)

Physics

Quantum Physics

10 pages, 5 figures

Scientific paper

10.1063/1.2752766

We report here a complete experimental realization of one-way decoy-pulse quantum key distribution, demonstrating an unconditionally secure key rate of 5.51 kbps for a 25.3 km fibre length. This is two orders of magnitudes higher than the value that can be obtained with a non-decoy system. We introduce also a simple test for detecting the photon number splitting attack and highlight that it is essential for the security of the technique to fully characterize the source and detectors used.

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