Generation, characterization and applications of optical entangled states

This work concerns the generation of optical entangled states by means of parametric down-conversion and their applications in the fields of quantum metrology and quantum information. Particularly we studied the manipulation of multiparameter entanglement by means of adaptive optics, demonstrating a way to improve entanglement visibility with type-II downconversion in the case of large detection apertures and a spatial counterpart to quantum dispersion-cancellation. Moreover, we worked on satellite quantum information, demonstrating the feasibility of single photon exchange between a LEO satellite and a ground station.