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Direct Measurement of the Photon Statistics of a Triggered Single Photon Source

F. Treussart·R. Alleaume·V. Le Floc'h·L. T. Xiao·J. -M Courty·J. -F. Roch
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Abstract

We studied intensity fluctuations of a single photon source relying on the pulsed excitation of the fluorescence of a single molecule at room temperature. We directly measured the Mandel parameter Q(T) over 4 orders of magnitude of observation timescale T, by recording every photocount. On timescale of a few excitation periods, subpoissonian statistics is clearly observed and the probablility of two-photons events is 10 times smaller than Poissonian pulses. On longer times, blinking in the fluorescence, due to the molecular triplet state, produces an excess of noise.

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F. Treussart, R. Alleaume, V. Le Floc'h, L. T. Xiao, J. -M Courty, J. -F. Roch. 2002-02-22. Direct Measurement of the Photon Statistics of a Triggered Single Photon Source. https://doi.org/10.1103/physrevlett.89.093601

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