Radiative and phonon-induced dephasing in double quantum dots

TL;DR

This paper presents a method to analyze how electromagnetic and lattice interactions cause complex dephasing effects in double quantum dot systems, highlighting phonon effects on exciton decay.

Contribution

It introduces a simple approach to model combined electromagnetic and phonon-induced dephasing in double quantum dots, revealing nontrivial joint reservoir effects.

Findings

Phonon-induced initial dephasing affects radiative decay.

Joint reservoir interactions lead to complex dephasing behaviors.

Method enables better understanding of quantum dot coherence dynamics.

Abstract

A simple method for describing the evolution of a quantum state of a double quantum dot system interacting simultaneously with the electromagnetic environment and with the lattice modes is developed. It is shown that the joint action of the two reservoirs leads to nontrivial effects in the system dephasing. As an example, the impact of phonon-induced initial dephasing on the radiative decay of delocalized exciton states is discussed.