Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes

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

doi:10.1063/1.3309698

Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes

Quantum Physics 2010-03-03 v1 Instrumentation and Detectors

Authors: 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.

Keywords

InGaAs avalanche photodiodes single photon detection self-differencing circuit afterpulsing quantum key distribution

Cite

@article{arxiv.1001.0934,
  title  = {Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes},
  author = {Z. L. Yuan and A. W. Sharpe and J. F. Dynes and A. R. Dixon and A. J. Shields},
  journal= {arXiv preprint arXiv:1001.0934},
  year   = {2010}
}

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4 pages, 4 figures

Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes

Abstract

Keywords

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