Theory of Spectroscopy and Light Emission of Semiconductors Nanostructures

Abstract

Due to their tunable optoelectronic properties, quantum confined electronic excitations in semiconductor quantum dots offer a versatile platform to design nanophotonic device applications. To address and control individual electronic excitations such as excitons, the fundamental Coulomb interaction between the electronic states as well as their coupling to other quasiparticles such as phonons and photons is of interest. In this chapter, we develop a theory of quantum dot spectroscopy and study coupled quantum dot-cavity structures with respect to their correlated photon emission statistics. To account for the surrounding material of the quantum emitter, we include electron-phonon interaction as well as analyze transitions between localized bound quantum dot states and delocalized states of the host medium. Coherent couplings between different quantum dots and the underlying microscopic coupling mechanisms are investigated using two-dimensional spectroscopy.