Integrated Photonics at Exceptional Points

Abstract

Exceptional point is a fundamental notion in quantum field theories and enables new functionalities in photonics. In this talk, I will discuss harnessing parity-time (PT) symmetry to realize optical exceptional points using the state-of-the-art integrated nanophotonics technology for novel opto-electronic functionalities. I will present unidirectional light transport for effective control of cavity resonant modes for stable and exotic waveguide and lasing performances on silicon-on-insulator and III-V semiconductor platforms.