Current correlations for the transport of interacting electrons through parallel quantum dots in a photon cavity

TL;DR

This paper investigates electron transport in parallel quantum dots within a photon cavity, analyzing current correlations and identifying radiative and non-radiative transitions, revealing signs of Rabi oscillations.

Contribution

It introduces a detailed computational scheme to analyze current correlations in interacting quantum dot systems coupled to a photon cavity, including Coulomb and electron-photon interactions.

Findings

Identification of all active transitions in current correlations

Observation of strong signs of Rabi oscillations

Analysis of radiative and non-radiative processes

Abstract

We calculate the current correlations for the steady-state electron transport through multi-level parallel quantum dots embedded in a short quantum wire, that is placed in a non-perfect photon cavity. We account for the electron-electron Coulomb interaction, and the para- and diamagnetic electron-photon interactions with a stepwise scheme of configuration interactions and truncation of the many-body Fock spaces. In the spectral density of the temporal current-current correlations we identify all the transitions, radiative and non-radiative, active in the system in order to maintain the steady state. We observe strong signs of two types of Rabi oscillations.