Yue Chang

Two-Photon Bound States in the Continuum: A No-Go Theorem and Long-Lived Quasi-Bound States

Two-photon bound states in the continuum provide a stringent setting in which quantum interference must suppress radiative decay despite photon--photon interactions. Here, we prove a no-go theorem showing that a single nonlinear mode linearly coupled to a noninteracting bosonic continuum cannot support an interaction-a...