Continuous operation of high bit rate quantum key distribution

A. R. Dixon, Z. L. Yuan, J. F. Dynes, A. W. Sharpe, A. J. Shields

doi:10.1063/1.3385293

Continuous operation of high bit rate quantum key distribution

DOI PDF 被引用文献3件

A. R. Dixon

Toshiba Research Europe Ltd. Cambridge Research Laboratory, , 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, United Kingdom
Z. L. Yuan

Toshiba Research Europe Ltd. Cambridge Research Laboratory, , 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, United Kingdom
J. F. Dynes

Toshiba Research Europe Ltd. Cambridge Research Laboratory, , 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, United Kingdom
A. W. Sharpe

Toshiba Research Europe Ltd. Cambridge Research Laboratory, , 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, United Kingdom
A. J. Shields

Toshiba Research Europe Ltd. Cambridge Research Laboratory, , 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, United Kingdom

書誌事項

公開日: 2010-04-19

DOI

10.1063/1.3385293

公開者: AIP Publishing

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説明

<jats:p>We demonstrate a quantum key distribution with a secure bit rate exceeding 1 Mbit/s over 50 km fiber averaged over a continuous 36 h period. Continuous operation of high bit rates is achieved using feedback systems to control path length difference and polarization in the interferometer and the timing of the detection windows. High bit rates and continuous operation allows finite key size effects to be strongly reduced, achieving a key extraction efficiency of 96% compared to keys of infinite lengths.</jats:p>