In this thesis we explore spatial quantum correlations of high-dimensional multi-photon states. These states are produced using the process of parametric down-conversion and are experimentally explored by measuring correlations with only two detectors. Compared to earlier investigations of multi-photon states, the correlations in this thesis are created in the spatial domain instead of the temporal domain. This has a distinct experimental advantage because it is much easier to measure the emission direction compared to a measurement of the arrival time of the photons.Quantum Matter and Optic
