Prof Douglas J. Paul > Silicon Mid-Infrared Photonics

We are developing a range of components including beam splitters, waveplates, single photon detectors, χ(2) mixers, χ(3) mixers, high-Q microdisk and racetrack cavities and plasmonic antennas to allow integrated silicon quantum photonic circuits to be achieved.


We have already demonstrated the use of strain to engineer the non-linear properties of Ge and We have also used Ge on Si plasmonic antenna to both amplify mid-infrared radiation for chemical sensing and to down-convert and up convert light using the strong χ(3) non-linearity. A range of single photon and broadband mid-infrared detectors are in development which should provide a platform technology for Silicon Quantum Photonics.