Figure 4
From: Direct Generation and Detection of Quantum Correlated Photons with 3.2 um Wavelength Spacing
(a) The internal conversion efficiency of the upconversion waveguide. Red triangles are the experiment data and the blue solid line is the numerical simulation without any free fitting parameter. (b) The noise photon rate created by the upconversion pump as a function of its peak power. The error bars are smaller than the symbol size.
