  Integration of single-photon sources and detectors to silicon-based photonics
opens the possibility of complex circuits for quantum information processing.
In this work, we demonstrate integration of quantum dots with a silicon
photonic add-drop filter for on-chip filtering and routing of telecom single
photons. A silicon microdisk resonator acts as a narrow filter that transfers
the quantum dot emission and filters the background over a wide wavelength
range. Moreover, by tuning the quantum dot emission wavelength over the
resonance of the microdisk we can control the transmission of the emitted
single photons to the drop and through channels of the add-drop filter. This
result is a step toward the on-chip control of single photons using silicon
photonics for applications in quantum information processing, such as linear
optical quantum computation and boson sampling.
