Single-photon avalanche diode detectors for quantum key distribution

G. S. Buller, R. E. Warburton, S. Pellegrini, J. S. Ng, J. P R David, L. J J Tan, A. B. Krysa, S. Cova

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The application of quantum key distribution (QKD) has raised particular demands for single-photon detectors. One of the most promising candidates at the low-loss optical fibre communications windows is the planar geometry InGaAs/InP single-photon avalanche diode. These detectors have been modelled, fabricated and characterised at 1.55m wavelength. Their performance in terms of single-photon detection efficiency, dark count rate, timing jitter and afterpulsing behaviour are reported and compared with the best commercially available, linear multiplication avalanche photodiodes operated in Geiger-mode. Their use in the application of QKD is discussed. © The Institution of Engineering and Technology 2007.

Original languageEnglish
Pages (from-to)249-254
Number of pages6
JournalIET Optoelectronics
Issue number6
Publication statusPublished - 2007


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