Fig. 3.

Photons bunching of a single GQD. a, b g⁽²⁾ functions of a single GQD, for two different excitation powers, 2 μW (red square) and 10 μW (blue diamond). a Zoom on short delays; b Full timescale intensity correlation. The solid line is a fit to the function $1-\left(1+a\right)e^{-{\lambda }_1\mid \tau \mid }$ + $a{e}^{-{\lambda }_2\mid \tau \mid }$, convolved by the time response of the detector. The three-level system used as a model is shown