I have been working on the entanglement of spatial modes of light, with a particular focus on orbital-angular-momentum carrying modes, and their stability under deterministic as well as random perturbations, such as atmospheric turbulence. I am now part of a multidisciplinary team bringing together people from LKB, LIP6 and Onera to understand the role of entanglement in remote sensing applications both in the optical (LIDAR) and the microwave (RADAR) regimes.