Resonance fluorescence in driven quantum dots: electron and photon correlations

TL;DR

This paper investigates the statistical correlations between electrons and photons emitted from a driven quantum dot, demonstrating how external tuning of parameters can control their fluctuations and correlations.

Contribution

It introduces a method to calculate mutual electron-photon correlations in a driven quantum dot and explores how external parameters influence these correlations.

Findings

Electronic and photonic fluctuations can be externally manipulated.

Configurations where electron-photon correlation is maximized are identified.

Energy-dependent tunneling reveals interesting correlation features.

Abstract

We study the counting statistics for electrons and photons being emitted from a driven two level quantum dot. Our technique allows us to calculate their mutual correlations as well. We study different transport configurations by tuning the chemical potential of one of the leads to find that the electronic and photonic fluctuations can be externally manipulated by tuning the AC and transport parameters. We also propose special configurations where electron-photon correlation is maximal meaning that spontaneous emission of photons with a well defined energy is regulated by single electron tunneling. Interesting features are also obtained for energy dependent tunneling.