Quantum correlations in semiconductor microcavities

The quantum mechanical nature of the light field in semiconductor microcavities leads to non-classical coupling effects between photons and electron–hole excitations. It is shown that these quantum correlations give rise to characteristic corrections of the semiclassical light-matter coupling dynamics. Examples of quantum correlation signatures include entanglement effects in the probe reflection of a microcavity system and squeezing in the incoherent emission.