Polariton Technologies#
Nonlinear mesoscale polariton dynamics#
Vibrational strong coupling (VSC) experiments are usually performed in planar Fabry-Pérot cavities, where a macroscopic number of molecules couples collectively to a continuum of cavity modes. By contrast, current theoretical treatments simplify this setting to a handful of molecules coupled to a single cavity mode. Hence, developing theoretical frameworks for VSC beyond the single-mode approximation is crucial for a comprehensive understanding of these experiments.
To this end, we have developed the mesoscale cavity molecular dynamics (CavMD) scheme to attack this challenge. With this approach, we achieve real-space imaging of vibrational polariton transport in 2D, which involves self-consistent propagation of approximately 20,000 realistic molecular simulation cells coupled to a multimode cavity. Beyond the well-known ballistic-to-diffusive turnover in the linear response regime, we find a nonlinear freezing mechanism of polariton transport under strong pumping.
References
CHE-2502758