Quantum control of electron--phonon scatterings in artificial atoms

TL;DR

This paper demonstrates how tailored laser pulses can fully control optical excitation in semiconductor quantum dots despite phonon-induced dephasing, using the independent Boson model and optimal control techniques.

Contribution

It introduces a method for complete control of quantum dot excitation by shaping laser pulses, overcoming phonon dephasing effects.

Findings

Laser pulse shaping achieves full control of optical excitation.

Phonon dephasing can be mitigated through optimal control.

The approach contrasts with other environment couplings.

Abstract

The phonon-induced dephasing dynamics in optically excited semiconductor quantum dots is studied within the frameworks of the independent Boson model and optimal control. We show that appropriate tailoring of laser pulses allows a complete control of the optical excitation despite the phonon dephasing, a finding in marked contrast to other environment couplings.