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arXiv · 1001.0934

Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes

Z. L. Yuan·A. W. Sharpe·J. F. Dynes·A. R. Dixon·A. J. Shields
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Abstract

We report a 2 GHz operation of InGaAs avalanche photodiodes for efficient single photon detection at telecom wavelengths. Employing a self-differencing circuit that incorporates tuneability in both frequency and arm balancing, extremely weak avalanches can now be sensed so as to suppress afterpulsing. The afterpulse probability is characterized as 4.84% and 1.42% for a photon detection efficiency of 23.5% and 11.8%, respectively. The device will further increase the secure bit rate for fiber wavelength quantum key distribution.

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Z. L. Yuan, A. W. Sharpe, J. F. Dynes, A. R. Dixon, A. J. Shields. 2010-01-06. Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes. https://doi.org/10.1063/1.3309698

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