ABSTRACT
Single photon sources are critical resources for quantum information science and technologies. Although methods to generate on-demand single photons have been developed for many years on a wide variety of material platforms including atomic vapors, ion traps, crystals, and semiconductors, the quest for a practical single photon source is still ongoing. Semiconductor technology is widely recognized as being extremely scalable both from the system complexity and cost perspectives. Although etched quantum dots (QDs) have long been considered non-feasible due to their large surface-to-volume ratios, the strain-induced quantum confinement in a III-nitride nanodisk can help keep the exciton away from the surface. As the strain field becomes asymmetric in an elliptical shaped QD, the heavy hole, light hole and split-off band are mixed and result in an exciton dipole moment along the direction defined by the long axis of the ellipse.
