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Article

Long-Distance Fiber-Optic Quantum Key Distribution Using Superconducting Detectors

Kurochkin V., Zverev A., Kurochkin Y., Ryabtsev I. I., Neizvestnyi I. G., Ozhegov R., Goltsman G., Larionov P. A.

This paper presents the results of experimental studies on quantum key distribution in optical fiber using superconducting detectors. Key generation was obtained on an experimental setup based on a self-compensation optical circuit with an optical fiber length of 101.1 km. It was first shown that photon polarization encoding can be used for quantum key distribution in optical fiber over a distance in excess of 300 km.