Hole Spin Pumping and Re-pumping in a p-type {\delta}-doped InAs Quantum Dot

TL;DR

This paper demonstrates coherent hole spin pumping and re-pumping in p-type delta-doped InAs quantum dots using a single-laser scheme under high magnetic fields, supported by experimental and theoretical analysis.

Contribution

It introduces a novel single-laser method for coherent hole spin control in quantum dots, with detailed modeling and experimental validation.

Findings

Successful demonstration of hole spin pumping and re-pumping.

High-quality p-type delta-doped InAs quantum dots achieved.

Modeling shows strong agreement with experimental results.

Abstract

We have grown high quality p-type {\delta}-doped InAs quantum dots and have demonstrated coherent spin pumping and repumping of a hole spin in a positively charged quantum dot by means of a single-laser driving scheme under a high magnetic field in the Voigt configuration. Modeling of our system shows excellent qualitative agreement with the experimental findings and further explores the performance of the single-laser scheme for spin pumping and re-pumping.