Polariton quantum boxes in semiconductor microcavities

TL;DR

This paper demonstrates the creation of polariton quantum boxes in semiconductor microcavities, showing quantized polariton modes due to lateral confinement, with potential for advanced optoelectronic devices.

Contribution

It reports a novel fabrication method for polariton quantum boxes with clear quantization and strong coupling, enabling new device applications.

Findings

Observation of quantized polariton modes

Clear anticrossing indicating strong coupling

High-quality growth technique demonstrated

Abstract

We report on the realization of polariton quantum boxes in a semiconductor microcavity under strong coupling regime. The quantum boxes consist of mesas that confine the cavity photon, etched on top of the spacer of a microcavity. For mesas with sizes of the order of a few micron in width and nm in depth, we observe quantization, caused by the lateral confinement, of the polariton modes in several peaks. We evidence the strong exciton-photon coupling regime through a typical/clear anticrossing curve for each quantized level. Moreover the growth technique is of high quality, which opens the way for the conception of new optoelectronic devices.