Resonant nature of phonon-induced damping of Rabi oscillations in quantum dots

TL;DR

This paper theoretically investigates how phonons influence Rabi oscillations in quantum dots, revealing a resonance effect that impacts coherent control of excitonic states.

Contribution

It introduces a semiclassical resonance framework explaining phonon-induced damping in quantum dot Rabi oscillations, emphasizing the role of lattice dynamics.

Findings

Resonance between phonon modes and optical driving affects Rabi oscillations.

Lattice response stability is crucial for coherent control.

Non-linear phonon dynamics govern the damping process.

Abstract

Optically controlled coherent dynamics of charge (excitonic) degrees of freedom in a semiconductor quantum dot under the influence of lattice dynamics (phonons) is discussed theoretically. We show that the dynamics of the lattice response in the strongly non-linear regime is governed by a semiclassical resonance between the phonon modes and the optically driven dynamics. We stress on the importance of the stability of intermediate states for the truly coherent control.