Real-time 70 Gbit/s, 128 QAM Quantum Noise Stream Cipher Transmission over 100 km with Secret Keys Delivered by Continuous Variable Quantum Key Distribution System

Conference: ECOC 2016 - 42nd European Conference on Optical Communication
09/18/2016 - 09/22/2016 at Düsseldorf, Deutschland

Proceedings: ECOC 2016

Pages: 3Language: englishTyp: PDF

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Nakazawa, Masataka; Yoshida, Masato; Hirooka, Toshihiko; Kasai, Keisuke (Research Institute of Electrical Communication, Tohoku University, Japan)
Hirano, Takuya (Department of Physics, Gakushuin University, Japan)

We demonstrate a real-time quantum noise stream cipher transmission with a continuous variable quantum key distribution system to greatly increase encryption security. 70 Gbit/s, 128 QAM encrypted data have been successfully transmitted over 100 km.