CUED Publications database

High speed prototype quantum key distribution system and long term field trial.

Dixon, AR and Dynes, JF and Lucamarini, M and Fröhlich, B and Sharpe, AW and Plews, A and Tam, S and Yuan, ZL and Tanizawa, Y and Sato, H and Kawamura, S and Fujiwara, M and Sasaki, M and Shields, AJ (2015) High speed prototype quantum key distribution system and long term field trial. Opt Express, 23. pp. 7583-7592.

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Abstract

Securing information in communication networks is an important challenge in today's world. Quantum Key Distribution (QKD) can provide unique capabilities towards achieving this security, allowing intrusions to be detected and information leakage avoided. We report here a record high bit rate prototype QKD system providing a total of 878 Gbit of secure key data over a 34 day period corresponding to a sustained key rate of around 300 kbit/s. The system was deployed over a standard 45 km link of an installed metropolitan telecommunication fibre network in central Tokyo. The prototype QKD system is compact, robust and automatically stabilised, enabling key distribution during diverse weather conditions. The security analysis includes an efficient protocol, finite key size effects and decoy states, with a quantified key failure probability of ε = 10⁻¹⁰.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 18:59
Last Modified: 18 Nov 2017 21:46
DOI: