  n a recent experiment, we reported the time-domain intensity noise
measurement of a single photon source relying on single molecule fluorescence
control. In this article we present data processing, starting from photocount
timestamps. The theoretical analytical expression of the time-dependent Mandel
parameter Q(T) of an intermittent single photon source is derived from ON<->OFF
dynamics . Finally, source intensity noise analysis using the Mandel parameter
is quantitatively compared to the usual approach relying on the time
autocorrelation function, both methods yielding the same molecular dynamical
parameters.
