Quantum key distribution in an optical fiber at distances of up to 200 km and a bit rate of 180 bit/s
A. V. Glejm, A. A. Anisimov, L. N. Asnis, Yu. B. Vakhtomin, Alexander V. Divochiy, V. I. Egorov, Vadim V. Kovalyuk, Alexander A. Korneev, S. M. Kynev, Yu. V. Nazarov, Roman V. Ozhegov, A. V. Rupasov, К. В. Смирнов, Maksim A. Smirnov, G. N. Gol'Tsman, S. A. Kozlov · Bulletin of the Russian Academy of Sciences Physics · 2014
An experimental demonstration of a subcarrier-wave quantum cryptography system with superconducting single-photon detectors (SSPDs) that distributes a secure key in a single-mode fiber at distance of 25 km with a bit rate of 800 kbit/s, a distance of 100 km with a bit rate of 19 kbit/s, and a distance of 200 km with a bit rate of 0.18 kbit/s is described.