Strong coupling and dressed states of an interface island in a pillar semiconductor microcavity

We present a theoretical scheme to investigate the coupled states of a zero-dimensional semiconductor structure and the confined modes of a pillar microcavity, taking into account interacting exciton states and both coherent and incoherent dynamical processes. For quantum-well monolayer fluctuations we find that the frequency of the cavity modes can be tuned in such a way that both exciton and biexciton states are in the strong coupling regime. The calculated luminescence spectra are interpreted in terms of transitions between the dressed states of the composite radiation-matter system.