ABSTRACT
Semiconductor microcavities are structures that allow for strong coupling of matter with light. The resulting eigenmodes are the so called polaritons that are half light-half matter bosonic quasiparticles with extremely low mass. Since the first demonstration of microcavities in the strong coupling regime by Weisbuch et al. in 1992, the form of the polariton dispersion and the in herent non-linearities of the system have attracted an intense interest, because it allows for the demonstration of very interesting scattering processes and also acts as a trap in momentum space.
