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

A. R. Dixon; J. F. Dynes; M. Lucamarini; B. Fröhlich; A. W. Sharpe; A. Plews; S. Tam; Z. L. Yuan; Y. Tanizawa; H. Sato; S. Kawamura; M. Fujiwara; M. Sasaki; A. J. Shields

doi:10.1364/OE.23.007583

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

A. R. Dixon, J. F. Dynes, M. Lucamarini, B. Fröhlich, A. W. Sharpe, A. Plews, S. Tam, Z. L. Yuan, Y. Tanizawa, H. Sato, S. Kawamura, M. Fujiwara, M. Sasaki, A. J. Shields

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	7583-7592
Number of pages	10
Journal	Optics Express
Volume	23
Issue number	6
DOIs	https://doi.org/10.1364/OE.23.007583
Publication status	Published - 23 Mar 2015

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10.1364/OE.23.007583

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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.",

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AU - Dixon, A. R.

AU - Dynes, J. F.

AU - Lucamarini, M.

AU - Fröhlich, B.

AU - Sharpe, A. W.

AU - Plews, A.

AU - Tam, S.

AU - Yuan, Z. L.

AU - Tanizawa, Y.

AU - Sato, H.

AU - Kawamura, S.

AU - Fujiwara, M.

AU - Sasaki, M.

AU - Shields, A. J.

PY - 2015/3/23

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AB - 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.

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

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