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.
|Number of pages||2|
|Journal||EPJ Web of Conferences|
|Publication status||Published - 25 Sep 2015|
|Event||12th International Workshop on Quantum Optics, IWQO 2015 - Moscow, Troitsk, Russian Federation|
Duration: 11 Aug 2015 → 16 Aug 2015
Bibliographical note© Owned by the authors, published by EDP Sciences, 2015. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Optical fiber
- Quantum cryptography
- Telecom network