Cavity quantum electrodynamics with a single quantum dot coupled to a photonic molecule

Abstract

We demonstrate the effects of cavity quantum electrodynamics for a quantum dot coupled to a photonic molecule consisting of a pair of coupled photonic crystal cavities. We show anticrossing between the quantum dot and the two supermodes of the photonic molecule, signifying achievement of the strong coupling regime. From the anticrossing data, we estimate the contributions of both mode-coupling and intrinsic detuning to the total detuning between the supermodes. Finally, we also show signatures of off-resonant cavity-cavity interaction in the photonic molecule.