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Proceedings Paper

Single photon detection and quantum cryptography
Author(s): Gerald S. Buller; Patrick J. Clarke; Robert J. Collins
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Paper Abstract

We present a general purpose theoretical model of single-photon detectors in quantum key distribution systems and apply it to an autonomous gigahertz clocked phase basis set system operating at a wavelength of 850 nm over a standard telecommunications fiber quantum channel. The system has been demonstrated using a variety of different singlephoton detectors, including thick and thin junction silicon single-photon avalanche photodiodes and the first implementation of a resonant cavity thin junction silicon single-photon avalanche diode. We show, by means of the theoretical model, how improvements to certain detector parameters can optimize key exchange rates.

Paper Details

Date Published: 19 November 2012
PDF: 15 pages
Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 85421V (19 November 2012); doi: 10.1117/12.974666
Show Author Affiliations
Gerald S. Buller, Heriot-Watt Univ. (United Kingdom)
Patrick J. Clarke, Heriot-Watt Univ. (United Kingdom)
Robert J. Collins, Heriot-Watt Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 8542:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI
Gary W. Kamerman; Gary J. Bishop; Mark T. Gruneisen; Keith L. Lewis; Miloslav Dusek; Richard C. Hollins; Ove Steinvall; John Gonglewski; John G. Rarity; Thomas J. Merlet, Editor(s)

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