Figure 3
(a) Recorded time delay histogram: occurrences in log scale as a function of the delay \(\Delta {t}_{si}\) between signal and idler detections (P = 30 mW, tbin = 1.4 ns). (b) Schematic time delay histograms in arbitrary units with the power dependence (i →Pi) of the various contributions to the peaks in our source compared to a source with RS. (c–e), measured coincidences \(({N}_{{\rm{coinc}}})\), accidentals (Nacc) and uncorrelated \(({N}_{{\rm{unco}}})\), as a function of the average pump power in linear and (f) log scale. The coloured lines correspond to the polynomial fit with fit parameters: Cc = 3.1 × 10−2 s−1mW−2, Ca = 7.8 × 10−8 s−1mW−4 Cu = 1.2 × 10−6 s−1mW−2.
