Our goal is to bring Quantum Information Science (QIS) from the lab to real-world applications by developing practical light sources. Many quantum technologies-like clocks, memories, and sensors-require ultra-stable, narrow-linewidth lasers at non-telecom wavelengths. While chip-scale light sources using high-Q cavities have achieved sub-Hz linewidths, their best performance remains in the telecom band. Extending this to other wavelengths is essential for QIS. Nanophotonics enables nonlinear conversion, but challenges such as thermal noise and unwanted photon generation persist in small mode volumes. We aim to overcome these via dispersion engineering, athermal design, and material noise studies. Atomic and ionic media offer much stronger nonlinearities than non-resonant materials, making them ideal for precise and efficient on-chip light generation. By combining these materials with advanced photonic structures, we plan to create chip-scale sources and transducers tailored to the needs of quantum technologies.

reading material: https://opg.optica.org/optica/fulltext.cfm?uri=optica-12-10-1597