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Quantum Key Distribution: longer ranges and stronger security with superconducting detectors and decoy states

Richard Hughes, Los Alamos National Laboratory

(Session 1 : Thursday from 8:15-9:00)

Abstract. The past few years have seen dramatic advances in the range, rate and security of quantum key distribution (QKD) over optical fiber. These advances have arisen from the development of decoy-state protocols and new superconducting single-photon detector technologies. The former permit rigorous security without adversely impacting the signal-to-noise, and the later offer lower error rates with higher clock rates than conventional detectors. I will describe the results of QKD experiments using superconducting single photon detectors, and the prospects for incorporating decoy-state QKD into transparent optical fiber networks.