Fig. 4: Experimental results.
From: Homodyne-based quantum random number generator at 2.9 Gbps secure against quantum side-information
a The figure shows the power spectral densities (PSDs) of the measurement outcomes, the calibrated vacuum fluctuations (obtained by the system characterization), and the excess noise (obtained by subtracting the PSD of the vacuum fluctuations from the PSD of the measurement outcomes). b Autocorrelation coefficients calculated from the measured samples and averaged 1000 times. The inset shows a zoom. c Relative frequency of the digitization error of the analog-to-digital converter (ADC) with respect to the digitization results. The non-linearity and digitization noise of the ADC leads to a large reduction of the min-entropy.
