Rabi oscillations in a quantum dot-cavity system coupled to a non-zero temperature phonon bath

TL;DR

This paper analyzes Rabi oscillations in a quantum dot-cavity system considering electron-phonon interactions at various temperatures, providing analytical solutions and spectral analysis to understand decoherence effects.

Contribution

It introduces an analytical approach combining rotating wave and Lamb-Dicke approximations to study phonon-induced decay in quantum dot-cavity Rabi oscillations.

Findings

Decay of Rabi oscillations due to electron-phonon coupling at different temperatures

Analytical expressions for collapse and revival times of oscillations

Spectral analysis of the system without rotating wave approximation

Abstract

We study a quantum dot strongly coupled to a single high-finesse optical microcavity mode. We use a rotating wave approximation method, commonly used in ion-laser interactions, tegether with the Lamb-Dicke approximation to obtain an analytic solution of this problem. The decay of Rabi oscillations because of the electron-phonon coupling are studied at arbitrary temperature and analytical expressions for the collapse and revival times are presented. Analyses without the rotating wave approximation are presented by means of investigating the energy spectrum.