Reshaping the phonon energy landscape of nanocrystals inside a terahertz plasmonic nanocavity

Abstract

Here the authors show that the dipole-active phonon resonance of semiconducting nanocrystals can be hybridized by a strongly concentrated terahertz vacuum field of a plasmonic nanocavity, thus achieving strong plasmon–phonon coupling even in the absence of direct terahertz illumination.