Abstract

Nonlinear optical response of cavity polaritons formed in high-Q semiconductor microcavities has attracted much attention because of their potential applications to entangled-photon sources and other quantum information technologies. Theoretical ideas of entangled-photon generation, e.g., biexcitonic cavity quantum electrodynamics [1] and polariton-polariton scattering [2], have been suggested, however these theories are limited in scope of target because they restrict two-exciton states to either biexciton or unbound two-exciton states. As for exciton system with small binding energy of biexciton, it is likely that the interplay between the biexciton and unbound two-exciton states have much impact on generation efficiency of entangled photons. We therefore introduce a general model including both biexciton and unbound two-exciton states and discuss generation efficiency of entangled photons.

© 2007 IEEE