Generation of guided space-time wave packets using multilevel indirect photonic transitions in integrated photonics

Abstract

We propose an integrated photonic approach to generating guided space-time wave packets in a conventional multimode waveguide using multilevel interband photonic transitions. It can generate broadband propagation-invariant space-time wave packets with arbitrary group velocity and tailored field profiles. Our work reveals an important connection between the study of time-varying media and space-time optics.