Fig. 4

Modified photon statistics due to nonlinear interaction. a Intensity correlation of transmitted light with a time bin width of 5 ns. Solid line is the theoretical prediction without free parameter (Eq. 2). b Dependence on the coupling efficiency Λ. The inset is a zoom into the region of our data point for clarity, and the solid line is g ⁽²⁾(0) from Eq. 2. Error bars represent ±1 standard error of mean