% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@INPROCEEDINGS{Kleinjohann:874418,
author = {Kleinjohann, Iris and Fischer, Andreas and Jäschke,
Natalie and Anders, Frithjof B.},
title = {{O}ptical {P}umping of {E}lectron {S}pins in {Q}uantum
{D}ot {E}nsembles},
volume = {50},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2020-01428},
series = {Publication Series of the John von Neumann Institute for
Computing (NIC) NIC Series},
pages = {247 - 254},
year = {2020},
comment = {NIC Symposium 2020},
booktitle = {NIC Symposium 2020},
abstract = {We use the central spin model to analyse optical pumping of
singly charged quantum dots. An exact quantum mechanical
approach is employed to calculate the impact of several
million laser pulses. The periodical excitation imprints on
the system and the electron spin polarisation refocuses
directly before each pulse. Our calculations link the
non-monotonic behaviour of the revival amplitude as function
of the external magnetic field found in experiments to the
nuclear Larmor precession. Furthermore, we extend our model
to a cluster of coupled central spin models to investigate
long-range spin-spin interactions in quantum dot ensembles.
A semiclassical approach handles the large amount of spins.
By means of the cluster approach, we provide an
understanding of the electron spin dephasing at different
external magnetic fields and spectral widths of the optical
excitation. Our model reveals the counterbalancing effects
generating a constant dephasing time in dependence of the
spectral laser width in experiment.},
month = {Feb},
date = {2020-02-27},
organization = {NIC Symposium 2020, Jülich (Germany),
27 Feb 2020 - 28 Feb 2020},
cin = {NIC},
cid = {I:(DE-Juel1)NIC-20090406},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
url = {https://juser.fz-juelich.de/record/874418},
}