Few-photons model of the optical emission of semiconductor quantum dots

TL;DR

This paper introduces the photon-probability-cluster-expansion, a new theoretical method to model the optical emission of semiconductor quantum dots with few photons, capturing many-body electron interactions beyond traditional models.

Contribution

It develops a generalized cluster expansion approach for accurately describing few-photon dynamics in semiconductor quantum dots with many-body interactions.

Findings

Vacuum Rabi flopping amplitude correlates with electron number in quantum dots

The method extends the Jaynes-Cummings model to complex semiconductor systems

Provides a reliable tool for studying quantum dot light emission with few photons

Abstract

The Jaynes-Cummings model provides a well established theoretical framework for single electron two level systems in a radiation field. Similar exactly solvable models for semiconductor light emitters such as quantum dots dominated by many particle interactions are not known. We access these systems by a generalized cluster expansion, the photon-probability-cluster-expansion: a reliable approach for few photon dynamics in many body electron systems. As a first application, we discuss vacuum Rabi flopping and show that their amplitude determines the number of electrons in the quantum dot.