My group leverages light-matter interactions to interrogate and control material and molecular function. I will focus on our recent realization of nearly dissipationless electronic transport in semiconductors at room temperature. These remarkable transport regimes arise from spontaneous hybridization of electronic particles with long-wavelength excitations, such as acoustic phonons to form two-dimensional acoustic polarons, and light to form polaritons. This hybridization protects electronic particles from scattering with lattice defects and vibrations, enabling macroscopic wavelike transport that far outpaces current gold standards of electronics. I will also discuss the prospect of hybridizing material excitations with carefully-tuned vacuum fields to realize disorder-tolerant semiconductors in technologically scalable configurations. In all cases, we develop ultrafast optical imaging capabilities to track energy flow with femtosecond resolution and few-nanometer precision, providing detailed measurements of the transport and interactions of a wide array of particles, including electrons, phonons, plasmons, spin waves, and photons.