Expérimental
After the prediction by Anderson of a disorder-induced conductor to insulator transition for electrons, light has been proposed as ideal non interacting waves to explore coherent transport properties in the absence of interactions. Previous studies on Anderson localization of light using semiconductor powders or dielectric particles have shown that intrinsic material properties, such as absorption or inelastic scattering of light, need to be taken into account in the interpretation of experimental signatures of Anderson localization. Laser-cooled clouds of atoms avoid the problems of samples used so far to study Anderson localization of light. Ab initio theoretical models have shown that a high spatial density of the scattering sample might allow to observe Anderson localization of photons in three dimensions. An alternative proposal suggests to use additional diagonal disorder, which can be realised via a speckle field. In this project, we propose to study experimentally these routes towards Anderson localization of light in three dimensions.