A platform for electrically pumped polariton simulators and topological lasers

TL;DR

This paper presents an electrically driven exciton-polariton lattice platform capable of laser-like emission, enabling potential on-chip topological polariton lasers with non-trivial properties.

Contribution

It introduces a novel electrically pumped polariton lattice platform for on-chip applications, advancing towards electrically driven topological polariton lasers.

Findings

Demonstrated laser-like emission from high-symmetry points

Established a platform for electrically pumped polariton devices

Paved the way for topological polariton lasers

Abstract

Two-dimensional electronic materials such as graphene and transition metal dichalgenides feature unique electrical and optical properties due to the conspirative effect of band structure, orbital coupling, and crystal symmetry. Synthetic matter, as accomplished by artificial lattice arrangements of cold atoms, molecules, electron patterning, and optical cavities, has emerged to provide manifold intriguing frameworks to likewise realize such scenarios. Exciton-polaritons have recently been added to the list of promising candidates for the emulation of system Hamiltonians on a semiconductor platform, offering versatile tools to engineer the potential landscape and to access the non-linear electro-optical regime. In this work, we introduce an electronically driven square and honeycomb lattice of exciton-polaritons, paving the way towards real world devices based on polariton lattices for on-chip applications. Our platform exhibits laser-like emission from high-symmetry points under direct current injection, hinting at the prospect of electrically driven polariton lasers with possibly topologically non-trivial properties.