---
_id: '20773'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>Semiconductor quantum dots are excellent
    candidates for ultrafast coherent manipulation of qubits by laser pulses on picosecond
    timescales or even faster. In inhomogeneous ensembles a macroscopic optical polarization
    decays rapidly due to dephasing, which, however, is reversible in photon echoes
    carrying complete information about the coherent ensemble dynamics. Control of
    the echo emission time is mandatory for applications. Here, we propose a concept
    to reach this goal. In a two-pulse photon echo sequence, we apply an additional
    resonant control pulse with multiple of 2<jats:italic>π</jats:italic> area. Depending
    on its arrival time, the control slows down dephasing or rephasing of the exciton
    ensemble during its action. We demonstrate for self-assembled (In,Ga)As quantum
    dots that the photon echo emission time can be retarded or advanced by up to 5
    ps relative to its nominal appearance time without control. This versatile protocol
    may be used to obtain significantly longer temporal shifts for suitably tailored
    control pulses.</jats:p>
article_number: '228'
author:
- first_name: Alexander N.
  full_name: Kosarev, Alexander N.
  last_name: Kosarev
- first_name: Hendrik
  full_name: Rose, Hendrik
  id: '55958'
  last_name: Rose
  orcid: 0000-0002-3079-5428
- first_name: Sergey V.
  full_name: Poltavtsev, Sergey V.
  last_name: Poltavtsev
- first_name: Matthias
  full_name: Reichelt, Matthias
  id: '138'
  last_name: Reichelt
- first_name: Christian
  full_name: Schneider, Christian
  last_name: Schneider
- first_name: Martin
  full_name: Kamp, Martin
  last_name: Kamp
- first_name: Sven
  full_name: Höfling, Sven
  last_name: Höfling
- first_name: Manfred
  full_name: Bayer, Manfred
  last_name: Bayer
- first_name: Torsten
  full_name: Meier, Torsten
  id: '344'
  last_name: Meier
  orcid: 0000-0001-8864-2072
- first_name: Ilya A.
  full_name: Akimov, Ilya A.
  last_name: Akimov
citation:
  ama: Kosarev AN, Rose H, Poltavtsev SV, et al. Accurate photon echo timing by optical
    freezing of exciton dephasing and rephasing in quantum dots. <i>Communications
    Physics</i>. 2020;3(1). doi:<a href="https://doi.org/10.1038/s42005-020-00491-2">10.1038/s42005-020-00491-2</a>
  apa: Kosarev, A. N., Rose, H., Poltavtsev, S. V., Reichelt, M., Schneider, C., Kamp,
    M., Höfling, S., Bayer, M., Meier, T., &#38; Akimov, I. A. (2020). Accurate photon
    echo timing by optical freezing of exciton dephasing and rephasing in quantum
    dots. <i>Communications Physics</i>, <i>3</i>(1), Article 228. <a href="https://doi.org/10.1038/s42005-020-00491-2">https://doi.org/10.1038/s42005-020-00491-2</a>
  bibtex: '@article{Kosarev_Rose_Poltavtsev_Reichelt_Schneider_Kamp_Höfling_Bayer_Meier_Akimov_2020,
    title={Accurate photon echo timing by optical freezing of exciton dephasing and
    rephasing in quantum dots}, volume={3}, DOI={<a href="https://doi.org/10.1038/s42005-020-00491-2">10.1038/s42005-020-00491-2</a>},
    number={1228}, journal={Communications Physics}, author={Kosarev, Alexander N.
    and Rose, Hendrik and Poltavtsev, Sergey V. and Reichelt, Matthias and Schneider,
    Christian and Kamp, Martin and Höfling, Sven and Bayer, Manfred and Meier, Torsten
    and Akimov, Ilya A.}, year={2020} }'
  chicago: Kosarev, Alexander N., Hendrik Rose, Sergey V. Poltavtsev, Matthias Reichelt,
    Christian Schneider, Martin Kamp, Sven Höfling, Manfred Bayer, Torsten Meier,
    and Ilya A. Akimov. “Accurate Photon Echo Timing by Optical Freezing of Exciton
    Dephasing and Rephasing in Quantum Dots.” <i>Communications Physics</i> 3, no.
    1 (2020). <a href="https://doi.org/10.1038/s42005-020-00491-2">https://doi.org/10.1038/s42005-020-00491-2</a>.
  ieee: 'A. N. Kosarev <i>et al.</i>, “Accurate photon echo timing by optical freezing
    of exciton dephasing and rephasing in quantum dots,” <i>Communications Physics</i>,
    vol. 3, no. 1, Art. no. 228, 2020, doi: <a href="https://doi.org/10.1038/s42005-020-00491-2">10.1038/s42005-020-00491-2</a>.'
  mla: Kosarev, Alexander N., et al. “Accurate Photon Echo Timing by Optical Freezing
    of Exciton Dephasing and Rephasing in Quantum Dots.” <i>Communications Physics</i>,
    vol. 3, no. 1, 228, 2020, doi:<a href="https://doi.org/10.1038/s42005-020-00491-2">10.1038/s42005-020-00491-2</a>.
  short: A.N. Kosarev, H. Rose, S.V. Poltavtsev, M. Reichelt, C. Schneider, M. Kamp,
    S. Höfling, M. Bayer, T. Meier, I.A. Akimov, Communications Physics 3 (2020).
date_created: 2020-12-16T14:30:57Z
date_updated: 2023-04-21T11:22:13Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '623'
- _id: '230'
- _id: '35'
doi: 10.1038/s42005-020-00491-2
intvolume: '         3'
issue: '1'
language:
- iso: eng
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '59'
  name: TRR 142 - Subproject A2
publication: Communications Physics
publication_identifier:
  issn:
  - 2399-3650
publication_status: published
status: public
title: Accurate photon echo timing by optical freezing of exciton dephasing and rephasing
  in quantum dots
type: journal_article
user_id: '16199'
volume: 3
year: '2020'
...