A compact free space quantum key distribution system capable of daylight operation

David M. Benton; Philip M. Gorman; Paul R. Tapster; David M. Taylor

doi:10.1016/j.optcom.2009.10.039

A compact free space quantum key distribution system capable of daylight operation

David M. Benton, Philip M. Gorman, Paul R. Tapster, David M. Taylor

Aston Institute of Photonic Technologies (AiPT)

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

Abstract

A free space quantum key distribution system has been demonstrated. Consideration has been given to factors such as field of view and spectral width, to cut down the deleterious effect from background light levels. Suitable optical sources such as lasers and RCLEDs have been investigated as well as optimal wavelength choices, always with a view to building a compact and robust system. The implementation of background reduction measures resulted in a system capable of operating in daylight conditions. An autonomous system was left running and generating shared key material continuously for over 7 days.

Original language	English
Pages (from-to)	2465-2471
Number of pages	7
Journal	Optics Communications
Volume	283
Issue number	11
DOIs	https://doi.org/10.1016/j.optcom.2009.10.039
Publication status	Published - 1 Jun 2010

Keywords

quantum cryptography
daylight
RCLED

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10.1016/j.optcom.2009.10.039

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A compact free space quantum key distribution system capable of daylight operation

Abstract

Keywords

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