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quant-ph2008★ 246 cited
An avalanche-photodiode-based photon-number-resolving detector
B. E. Kardynal, Z. L. Yuan, A. J. Shields
Avalanche photodiodes are widely used as practical detectors of single photons.1 Although conventional devices respond to one or more photons, they cannot resolve the number in the…
quant-ph2004★ 34 cited
Unconditionally secure quantum key distribution over 50km of standard telecom fibre
C. Gobby, Z. L. Yuan, A. J. Shields
We demonstrate a weak pulse quantum key distribution system using the BB84 protocol which is secure against all individual attacks, including photon number splitting. By carefully…