This thesis breaks new ground in the physics of photonic circuits for quantum optical applications. The photonic circuits are based either on ridge waveguides or photonic crystals, with embedded quantum dots providing the single qubit, quantum optical emitters. The highlight of the thesis is the first demonstration of a spin-photon interface using an all-waveguide geometry, a vital component of a quantum optical circuit, based on deterministic single photon emission from a single quantum dot. The work makes a further important contribution to the field by demonstrating the effects and...

This thesis breaks new ground in the physics of photonic circuits for quantum optical applications, offering the first demonstration of a spin-photon interface using an all-waveguide geometry, and a number of other highly novel contributions to the field.