# Dipolar excitons offer a rich playground for both design of novel optoelectronic devices and fundamental many-body physics

## TL;DR

This paper explores the properties of dipolar excitons in wide GaN/(AlGa)N quantum wells, demonstrating their confinement and cooling, which are essential steps toward developing optoelectronic devices and studying many-body physics.

## Contribution

It introduces a method to trap and cool dipolar excitons in wide GaN/(AlGa)N quantum wells using electrostatic potentials, enabling advanced control and study.

## Key findings

- Successful in-plane confinement of dipolar excitons.
- Demonstrated cooling of excitons in the quantum wells.
- Electrostatic trapping paves the way for exciton manipulation.

## Abstract

Dipolar excitons offer a rich playground for both design of novel optoelectronic devices and fundamental many-body physics. Wide GaN/(AlGa)N quantum wells host a new and promising realization of dipolar excitons. We demonstrate the in-plane confinement and cooling of these excitons, when trapped in the electrostatic potential created by semitransparent electrodes of various shapes deposited on the sample surface. This result is a prerequisite for the electrical control of the exciton densities and fluxes, as well for studies of the complex phase diagram of these dipolar bosons at low temperature.