Nonlinear Optics

Thanks to its large electronic bandgap, GaP is one few semiconductors which is transparent at both visible and telecom wavelengths. This makes it a promising material for nonlinear and quantum optics applications involving frequency and photon pair conversion. These experiments are on-going, and have the potential to result in highly-efficient chip-based sources of quantum light. We recently demonstrated conversion of light from 1550nm to 775nm with record efficiency using these devices, and want to next use them to create entangled photon pairs for quantum communication.