Nonlinear Dynamics in Semiconductor Lasers 2023 - Abstract
Reitzenstein, Stephan
Quantum light sources are key building blocks for the implementation of photonic quantum networks and for the realization of photonic quantum processors. Moreover, they allow one to explore exciting physics in the quantum regime of single emitters and single photons. Of particular interest are devices generating, routing, processing and detecting single photons which act as information carriers in the field of photonic quantum technologies. In this talk, I present recent progress in the development and deterministic fabrication of high-performance single-photon sources (SPSs) and on-chip quantum circuits based on semiconductor quantum dots (QDs) which act as close-to-ideal photon emitters. Using an advanced nanoprocessing technology platform, namely in-situ electron beam lithography, we pre-select suitable QDs and integrate them with nm accuracy into photonic nanostructures such as circular Bragg gratings to enhance the brightness of the sources, and to enable the development of scalable integrated quantum photonic circuits. The talk gives an insight into the physics of such devices and discusses technological challenges, current limitations as well as perspectives of semiconductor QD based quantum devices.