Trapping of Cold Excitons with Laser Light

TL;DR

This paper introduces a novel laser trapping method for excitons in quantum wells, demonstrating the ability to confine and manipulate a degenerate Bose gas of excitons, expanding optical trapping applications.

Contribution

It presents the first experimental demonstration of laser-induced trapping of excitons, a new system for optical manipulation of quantum gases.

Findings

Successful trapping of a degenerate Bose gas of excitons.

Demonstration of laser-induced confinement in quantum well structures.

Potential for new quantum manipulation techniques.

Abstract

Optical trapping and manipulation of neutral particles has led to a variety of experiments from stretching DNA-molecules to trapping and cooling of neutral atoms. An exciting recent outgrowth of the technique is an experimental implementation of atom Bose-Einstein condensation. In this paper, we propose and demonstrate laser induced trapping for a new system--a gas of excitons in quantum well structures. We report on the trapping of a highly degenerate Bose gas of excitons in laser induced traps.