# Electroluminescence caused by the transport of interacting electrons through parallel quantum dots in a photon cavity

## TL;DR

This paper demonstrates how Rabi-splitting and electroluminescence can be induced in a system of parallel quantum dots in a photon cavity, highlighting the importance of high-order electron-photon interactions.

## Contribution

It introduces a detailed analysis of electroluminescence driven by electron transport in quantum dots coupled to a photon cavity, emphasizing the role of both para- and dia-magnetic interactions.

## Key findings

- Rabi-splitting can be achieved via para- or dia-magnetic interactions.
- Electroluminescence occurs during electron transport through quantum dot states.
- High-order electron-photon processes are essential for accurate state description.

## Abstract

We show that a Rabi-splitting of the states of strongly interacting electrons in parallel quantum dots embedded in a short quantum wire placed in a photon cavity can be produced by either the para- or the dia-magnetic electron-photon interactions when the geometry of the system is properly accounted for and the photon field is tuned close to a resonance with the electron system. We use these two resonances to explore the electroluminescence caused by the transport of electrons through the one- and two-electron ground states of the system and their corresponding conventional and vacuum electroluminescense as the central system is opened up by coupling it to external leads acting as electron reservoirs. Our analysis indicates that high-order electron-photon processes are necessary to adequately construct the cavity-photon dressed electron states needed to describe both types of electroluminescence.