Subcarrier Wave Quantum Key Distribution in Telecommunication Network with Bitrate 800 kbit/s
ITMO University, 49 Kronverksky pr., Saint Petersburg 197101, Russia
a Corresponding author: firstname.lastname@example.org
Published online: 25 September 2015
In the course of work on creating the first quantum communication network in Russia we demonstrated quantum key distribution in metropolitan optical network infrastructure. A single-pass subcarrier wave quantum cryptography scheme was used in the experiments. BB84 protocol with strong reference was chosen for performing key distribution. The registered sifted key rate in an optical cable with 1.5 dB loss was 800 Kbit/s. Signal visibility exceeded 98%, and quantum bit error rate value was 1%. The achieved result is a record for this type of systems.
Key words: quantum cryptography / sideband / optical fiber / telecom network
© Owned by the authors, published by EDP Sciences, 2015
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