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Saturation curve of a single QD. The fluorescence intensity of the QD is plotted versus the power of individual excitation pulse . The solid line is a adjustment of the experimental data [given by Eq. (1)] with . The right-hand side scale represents the excitation probability at the end of the pulse.
Collection of the fluorescence of a single QD. (a) Schematic overview of the optical setup for collecting the QDs fluorescence. (b) Radiation pattern of a single QD as computed for an emitter placed on a glass coverslip and covered by a PMMA layer. Most of the power is radiated in the glass , which allows to collect of the single QDs fluorescence within the collection angle .
Histogram of coincidence counts of a single QD fluorescence . Above each peak is given its aera normalized to Poissonian photon statistics, without background correction (bold) and with background correction (italic). The solid line is a fit of the data, yielding a excited-state lifetime.
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