Fiber-coupled semiconductor waveguides as an efficient optical interface to a single quantum dipole.

We theoretically investigate the interaction of a single quantum dipole with the modes of a fiber-coupled semiconductor waveguide. Through a combination of tight modal confinement and phase-matched evanescent coupling, we predict that approximately 70% of the dipole's emission can be collected into a single-mode optical fiber. We further show that the dipole strongly modifies resonant light transmission through the system, with a change of over 1 order of magnitude for an appropriate choice of fiber-waveguide coupler geometry.