Strongly interacting dipolar-polaritons

TL;DR

This paper demonstrates electrically tunable, strongly interacting dipolaritons with significantly enhanced interactions and long propagation, enabling advanced quantum circuitry and raising fundamental questions about interaction origins.

Contribution

It introduces a system of electrically polarized dipolaritons with tunable, large interactions and long-distance guidance, advancing quantum simulation and topological state research.

Findings

Up to 200-fold enhancement of polariton interactions.

Electrical control enables tuning of interaction strength.

Long-distance propagation of fully-guided dipolaritons.

Abstract

Exciton-polaritons are mutually interacting quantum hybridizations of confined photons and electronic excitations. Here we demonstrate a system of optically guided, electrically polarized exciton-polaritons ('dipolaritons') that displays up to 200-fold enhancement of the polariton-polariton interaction strength compared to unpolarized polaritons. The magnitude of the dipolar interaction enhancement can be turned on and off and be easily tuned over a very wide range by varying the applied polarizing electric-field. The very large interaction strengths and the very long propagation distances of these fully-guided dipolaritons open up new opportunities for realizing complex quantum circuitry and quantum simulators, as well as topological states based on exciton-polaritons, for which the interactions between polaritons need to be large and spatially or temporally controlled. The results also raise fundamental questions on the origin of such large enhancements.