A Semiconductor structure with a quantum dot emitting photons into a waveguide

摘要

A semiconductor structure with a layers, one of which 711 is partially laterally oxidized to produce waveguide 721. The laterally oxidised material modifies the lateral effective refractive index with said structure in order to form the waveguide. A quantum dot 717 is configured to emit photons into the waveguide, which is configured such that it guides the output from a single quantum dot. This can be done by etching a pattern on the layer to produce a mesa whose central line is aligned with the quantum dot. The structure can be used for a beam splitter, a random number generator, an interferometer, a phase shifting element, a photonic transistor or a filter.