Silicon photonic nanostructures are widely used to localize light and enhance light-matter interactions. They are also key components in integrated photonic circuits for a variety of applications. However, due to its narrow indirect bandgap and centrosymmetric crystal, silicon does not provide some of the most desired functions for building active nonlinear or quantum optical circuits. In this talk, we show how to engineer dielectric nanostructure on a silicon platform to achieve low-loss waveguiding and ultra-high quality factor cavities in various material systems. We further demonstrate that full exploitation of hybrid photonic circuits will lead to efficient light conversion, manipulation and detection on the ubiquitous silicon platform.
Hong Tang is Professor of Electrical Engineering, Physics and Applied Physics at Yale University. His research utilizes integrated photonic circuits to study photon-photon, photon-mechanics and photon-spin interactions. He joined Yale faculty as assistant professor in 2006. At Yale his group specializes in nanofabrication and precision measurement, spanning the fields of spintronics, NEMS, nanophotonics and optomechanics. He is a recipient of the NSF CAREER Award and a Packard Fellow in Science and Engineering.