Quantum Dot Behaviour under the Influence of Non-Resonant Structured Laser Beams

TL;DR

This paper explores how intense, non-resonant structured laser beams with different profiles affect the electronic properties of InAs/GaAs quantum dots, revealing significant potential for precise charge manipulation in nanophotonics.

Contribution

It provides a comparative analysis of the effects of various structured laser beams on quantum dot confinement and electron densities, highlighting the sensitivity to Bessel beam parameters.

Findings

Significant changes in confinement potentials and electron densities with structured beams.

High sensitivity of quantum dots to zeroth order Bessel beam intensity and peak position.

Potential for precise charge carrier manipulation using structured laser fields.

Abstract

The study investigates and compares the impact of intense, non-diffractive, non-resonant structured laser beams with various intensity profiles on the properties of InAs/GaAs cylindrical quantum dot. The comparative study demon-strates that the different structured beams, having unique symmetries and hence properties, have significant effects on the confinement potentials and electron probability densities of the quantum dot. It is shown that the system is most sensitive to the intensity and peak position changes of the zeroth order Bessel beam. Drastic changes in the dressed confinement potentials and electron probability densities under the impact of the above-mentioned beams were demonstrated, which can lead to the usage of the following method in such applications, where the precise manipulation of the charge carrier location is required. This study provides new insights into the role of structured laser fields in quantum dot systems, offering possibilities for their use in advanced nanophotonics and quantum information technologies.