Figure 2
From: Full counting statistics of quantum dot resonance fluorescence
Fitting quantum dot resonance fluorescence histograms using full counting statistics.
(a) Photon counting histogram of resonance fluorescence intensity for the charged exciton transition (X1−) of QD A at finite detuning, s = 1.7, acquisition time of 50 s and bin size of 100 μs. Data is shown as filled circles, a least squares fit according the model as blue line. The red line maps out the expected histogram at the same detuning, but in the absence of spectral diffusion. Fit parameters: amplitude a = 55.3, detuning δaverage = 148 MHz, Gaussian diffusion width ΔDiffusion = 364 MHz. Inset: same data and fit on linear scale. Bottom: residual of fit. (b) Calculation of least squares error using the data from panel (a) in the parameter space of amplitude, detuning and diffusion. The sidewalls show projections of plane cuts through the global error minimum. The actual location of the planes in the parameter space is indicated by the shaded squares. The model error has a single well-defined minimum.
