Avalanche photodiodes for measuring photon correlations

Beata E. Kardynal, Zhiliang L. Yuan, Andrew J. Shields

Ondřej Haderka, Martin Hamar, Jan Peřina

E. G. Varona

J. F. Dynes, Zhiliang L. Yuan, A. W. Sharpe +2 more

We demonstrate the use of two high speed avalanche photodiodes in exploring higher order photon correlations. By employing the photon number resolving capability of the photodiodes the response to higher order photon coincidences can be measured. As an example we show experimentally the sensitivity to higher order correlations for three types of photon sources with distinct photon statistics. This higher order correlation technique could be used as a low cost and compact tool for quantifying the degree of correlation of photon sources employed in quantum information science.

R. v. Baltz

G. Brida, Stefania Castelletto, Carlo Novero +1 more

We report the first results concerning quantum efficiency measurement of photodetectors with the technique of correlated photons generated by parametric down conversion in a nonlinear crystal. Measurements have been performed on photomultipliers in photon counting regime and will be extended to avalanche photodiodes working as single photon detectors.