Driven dipolariton transistors using van der Waals TMDC with channel guides

Using a computational approach based on the driven diffusion equation for a dipolariton wave packet, we simulate the diffusive dynamics of dipolaritons in a patterned optical microcavity embedded with a transition metal dichalcogenide (TMDC) heterogeneous bilayer. By considering exciton-dipolaritons, which are a three way superposition of direct excitons, indirect excitons and cavity photons; we are able to drive the dipolaritons in our system by the use of an electric voltage and investigate their diffusive properties. More precisely, we study the propagation of dipolaritons present in a MoSe₂-WS₂ heterostructure, where the dipolariton propagation is guided by Y-shaped and Ψ-shaped channel guides. We also consider the propagation of dipolaritons in the presence of a buffer in the Ψ-shaped channel branches and study the resulting changes in efficiency. By our considerations of geometrically novel dipolariton channel guides, we are able to replicate the dipolariton redistribution efficiencies of previously proposed polaritronic applications and propose novel designs for optical transistors at room temperature.