Measurement of the g-factor tensor in a quantum dot and disentanglement of excition spins

Journal article (2011)

Authors

B.J. Witek QN/Quantum Transport

R.W. Heeres QN/Quantum Transport

U Perinetti QN/Quantum Transport

E.P.A.M. Bakkers QN/Quantum Transport

Leo P. Kouwenhoven QN/Quantum Transport

V.G. Zwiller QN/Quantum Transport

Research Group

QN/Quantum Transport

To reference this document use:

http://resolver.tudelft.nl/uuid:b0054bea-843a-467b-bad6-cabff745d9c1

More Info

expand_more

Published Date

2011

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Research Group

QN/Quantum Transport

Abstract

We perform polarization-resolved magneto-optical measurements on single InAsP quantum dots embedded
in an InP nanowire. In order to determine all elements of the electron and hole g-factor tensors, we measure
in magnetic fields with different orientations. The results of these measurements are in good agreement with
a model based on exchange terms and Zeeman interaction. In our experiment, polarization analysis delivers a
powerful tool that not only significantly increases the precision of the measurements, but also enables us to probe
the exciton spin-state evolution in magnetic fields. We propose a disentangling scheme of heavy-hole exciton
spins enabling a measurement of the electron spin T2-time.