Low timing jitter detector for gigahertz quantum key distribution

Collins, R.J., Hadfield, R.H. , Fernandez, V., Nam, S.W. and Buller, G.S. (2007) Low timing jitter detector for gigahertz quantum key distribution. Electronics Letters, 43(3), pp. 180-182. (doi: 10.1049/el:20073748)

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A superconducting single-photon detector based on a niobium nitride nanowire is demonstrated in an optical-fibre-based quantum key distribution test bed operating at a clock rate of 3.3 GHz and a transmission wavelength of 850 nm. The low jitter of the detector leads to significant reduction in estimated quantum bit error rate and a resultant improvement in secrecy efficiency compared to previous estimates made by use of silicon single-photon avalanche detectors.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Hadfield, Professor Robert
Authors: Collins, R.J., Hadfield, R.H., Fernandez, V., Nam, S.W., and Buller, G.S.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Electronics Letters
Publisher:The Institution of Engineering & Technology

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