2019-2021 CNR joint lab project (in collaboration with University Paris Diderot): Nonlinear photonics with metal-less nanoantennas and metasurfaces (OMEN). OMEN capitalizes on a newly developed scheme for enhanced second-order optical nonlinearities to design, fabricate and test new classical and quantum platforms based on all-dielectric nanoantennas and metasurfaces. OMEN will fulfill its ambitious goals by engineering near and far-field patterns of nanoantennas and by demonstrating all-dielectric metasurfaces featuring control over the spatial, polarization and frequency properties of the nonlinearly-generated photons. We intend to prove that in these dielectric metasurfaces sum and difference frequency generation and spontaneous parametric down-conversion can all be efficiently achieved. OMEN is designed to establish a framework for our researchers to access both fabrication and characterization facilities in an integrated fashion, fostering new research activities that will in the end spur applications for nanoscale photonic devices.