Waveguide Superconducting Single-and Few-Photon Detectors on GaAs for Integrated Quantum Photonics

Integrated quantum photonics offers three principal advantages over bulk optics--low loss, simplicity and scalability. Quantum photonic integrated circuits show promise for on-chip generation, manipulation and detection of tens of single photons for quantum information processing. For quantum photonic integration, gallium arsenide is one of the most promising material platforms as full integration of all active and passive circuit elements can be obtained.