This thesis gives insight into two photon quantum interference effects in quantum optics, with Hong-Ou-Mandel visibility detection. This is studied using a delay loop with different light...Show moreThis thesis gives insight into two photon quantum interference effects in quantum optics, with Hong-Ou-Mandel visibility detection. This is studied using a delay loop with different light polarizations. The single photons are created by exciting a quantum dot in a microcavity with a continuous-wave laser. We try to relate experimental results of the second order correlation function to a theoretical analysis of the obtained photon states in the system. As a result an insight into the creation of highly entangled qubit states, called cluster states, is given.Show less