Single photon detection and quantum cryptography

Gerald S. Buller; Patrick J. Clarke; Robert J. Collins

doi:10.1117/12.974666

19 November 2012 Single photon detection and quantum cryptography

Gerald S. Buller, Patrick J. Clarke, Robert J. Collins

Proceedings Volume 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI; 85421V (2012) https://doi.org/10.1117/12.974666
Event: SPIE Security + Defence, 2012, Edinburgh, United Kingdom

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.

Citation Download Citation

Gerald S. Buller, Patrick J. Clarke, and Robert J. Collins "Single photon detection and quantum cryptography", Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 85421V (19 November 2012); https://doi.org/10.1117/12.974666

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