Electromagnetic theory of the coupling of zero-dimensional exciton and photon states: A quantum dot in a spherical microcavity

Exciton-light coupling in spherical microcavities containing quantum dots has been treated by means of classical electrodynamics within the nonlocal dielectric response model. Typical anticrossing behavior of zero-dimensional exciton-polariton modes has been obtained, as well as the weak-coupling-strong-coupling threshold. The influence of the cavity Q factor on the optical response of the structure has been analyzed.