---
_id: '22003'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>The coherent electron spin dynamics
    of an ensemble of singly charged (In,Ga)As/GaAs quantum dots in a transverse magnetic
    field is driven by periodic optical excitation at 1 GHz repetition frequency.
    Despite the strong inhomogeneity of the electron <jats:italic>g</jats:italic>
    factor, the spectral spread of optical transitions, and the broad distribution
    of nuclear spin fluctuations, we are able to push the whole ensemble of excited
    spins into a single Larmor precession mode that is commensurate with the laser
    repetition frequency. Furthermore, we demonstrate that an optical detuning of
    the pump pulses from the probed optical transitions induces a directed dynamic
    nuclear polarization and leads to a discretization of the total magnetic field
    acting on the electron ensemble. Finally, we show that the highly periodic optical
    excitation can be used as universal tool for strongly reducing the nuclear spin
    fluctuations and preparation of a robust nuclear environment for subsequent manipulation
    of the electron spins, also at varying operation frequencies.</jats:p>
author:
- first_name: E.
  full_name: Evers, E.
  last_name: Evers
- first_name: N. E.
  full_name: Kopteva, N. E.
  last_name: Kopteva
- first_name: I. A.
  full_name: Yugova, I. A.
  last_name: Yugova
- first_name: D. R.
  full_name: Yakovlev, D. R.
  last_name: Yakovlev
- first_name: Dirk
  full_name: Reuter, Dirk
  id: '37763'
  last_name: Reuter
- first_name: A. D.
  full_name: Wieck, A. D.
  last_name: Wieck
- first_name: M.
  full_name: Bayer, M.
  last_name: Bayer
- first_name: A.
  full_name: Greilich, A.
  last_name: Greilich
citation:
  ama: Evers E, Kopteva NE, Yugova IA, et al. Suppression of nuclear spin fluctuations
    in an InGaAs quantum dot ensemble by GHz-pulsed optical excitation. <i>npj Quantum
    Information</i>. 2021. doi:<a href="https://doi.org/10.1038/s41534-021-00395-1">10.1038/s41534-021-00395-1</a>
  apa: Evers, E., Kopteva, N. E., Yugova, I. A., Yakovlev, D. R., Reuter, D., Wieck,
    A. D., … Greilich, A. (2021). Suppression of nuclear spin fluctuations in an InGaAs
    quantum dot ensemble by GHz-pulsed optical excitation. <i>Npj Quantum Information</i>.
    <a href="https://doi.org/10.1038/s41534-021-00395-1">https://doi.org/10.1038/s41534-021-00395-1</a>
  bibtex: '@article{Evers_Kopteva_Yugova_Yakovlev_Reuter_Wieck_Bayer_Greilich_2021,
    title={Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble
    by GHz-pulsed optical excitation}, DOI={<a href="https://doi.org/10.1038/s41534-021-00395-1">10.1038/s41534-021-00395-1</a>},
    journal={npj Quantum Information}, author={Evers, E. and Kopteva, N. E. and Yugova,
    I. A. and Yakovlev, D. R. and Reuter, Dirk and Wieck, A. D. and Bayer, M. and
    Greilich, A.}, year={2021} }'
  chicago: Evers, E., N. E. Kopteva, I. A. Yugova, D. R. Yakovlev, Dirk Reuter, A.
    D. Wieck, M. Bayer, and A. Greilich. “Suppression of Nuclear Spin Fluctuations
    in an InGaAs Quantum Dot Ensemble by GHz-Pulsed Optical Excitation.” <i>Npj Quantum
    Information</i>, 2021. <a href="https://doi.org/10.1038/s41534-021-00395-1">https://doi.org/10.1038/s41534-021-00395-1</a>.
  ieee: E. Evers <i>et al.</i>, “Suppression of nuclear spin fluctuations in an InGaAs
    quantum dot ensemble by GHz-pulsed optical excitation,” <i>npj Quantum Information</i>,
    2021.
  mla: Evers, E., et al. “Suppression of Nuclear Spin Fluctuations in an InGaAs Quantum
    Dot Ensemble by GHz-Pulsed Optical Excitation.” <i>Npj Quantum Information</i>,
    2021, doi:<a href="https://doi.org/10.1038/s41534-021-00395-1">10.1038/s41534-021-00395-1</a>.
  short: E. Evers, N.E. Kopteva, I.A. Yugova, D.R. Yakovlev, D. Reuter, A.D. Wieck,
    M. Bayer, A. Greilich, Npj Quantum Information (2021).
date_created: 2021-05-05T09:48:58Z
date_updated: 2022-01-06T06:55:22Z
department:
- _id: '15'
- _id: '230'
doi: 10.1038/s41534-021-00395-1
language:
- iso: eng
publication: npj Quantum Information
publication_identifier:
  issn:
  - 2056-6387
publication_status: published
status: public
title: Suppression of nuclear spin fluctuations in an InGaAs quantum dot ensemble
  by GHz-pulsed optical excitation
type: journal_article
user_id: '42514'
year: '2021'
...