Integrated quantum optics

The activity on integrated quantum optics focuses on actively multiplexing of heralded single photon sources[1], on single photon detectors detectors, on the manipulation of two-photon states[2], and the frequency conversion of single photons [3]. Currently, we rely mostly on SiN photonics ICs that we complement with other functional elements such as nonlinear materials[4] or semiconductors. Picture : The process of four-wave mixing is used to create pairs of correlated photons [5] or change their wavelength [3] (A). It benefits strongly from the filed enhancements in microcavities (B) and it can induce strong coupling between single photons inside a cavity (C)