Optical emulation of photon-pair generation in nonlinear lossy waveguidesMarkus Gräfe, Diana A. Antonosyan, Alexander S. Solntsev, Andrey A. Sukhorukov and Alexander SzameitEPL, 118 5 (2017) 54001DOI: https://doi.org/10.1209/0295-5075/118/54001