---
_id: '40438'
abstract:
- lang: eng
  text: <jats:p>Semiconductor microcavities are frequently studied in the context
    of semiconductor lasers and in application-oriented fundamental research on topics
    such as linear and nonlinear polariton systems, polariton lasers, polariton pattern
    formation, and polaritonic Bose–Einstein condensates. A commonly used approach
    to describe theoretical properties includes a phenomenological single-mode equation
    that complements the equation for the nonlinear optical response (interband polarization)
    of the semiconductor. Here, we show how to replace the single-mode equation by
    a fully predictive transfer function method that, in contrast to the single-mode
    equation, accounts for propagation, retardation, and pulse-filtering effects of
    the incident light field traversing the distributed Bragg reflector (DBR) mirrors,
    without substantially increasing the numerical complexity of the solution. As
    examples, we use cavities containing GaAs quantum wells and transition-metal dichalcogenides
    (TMDs).</jats:p>
article_number: G112
author:
- first_name: M.
  full_name: Carcamo, M.
  last_name: Carcamo
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: R.
  full_name: Binder, R.
  last_name: Binder
citation:
  ama: Carcamo M, Schumacher S, Binder R. Transfer function replacement of phenomenological
    single-mode equations in semiconductor microcavity modeling. <i>Applied Optics</i>.
    2020;59(22). doi:<a href="https://doi.org/10.1364/ao.392014">10.1364/ao.392014</a>
  apa: Carcamo, M., Schumacher, S., &#38; Binder, R. (2020). Transfer function replacement
    of phenomenological single-mode equations in semiconductor microcavity modeling.
    <i>Applied Optics</i>, <i>59</i>(22), Article G112. <a href="https://doi.org/10.1364/ao.392014">https://doi.org/10.1364/ao.392014</a>
  bibtex: '@article{Carcamo_Schumacher_Binder_2020, title={Transfer function replacement
    of phenomenological single-mode equations in semiconductor microcavity modeling},
    volume={59}, DOI={<a href="https://doi.org/10.1364/ao.392014">10.1364/ao.392014</a>},
    number={22G112}, journal={Applied Optics}, publisher={Optica Publishing Group},
    author={Carcamo, M. and Schumacher, Stefan and Binder, R.}, year={2020} }'
  chicago: Carcamo, M., Stefan Schumacher, and R. Binder. “Transfer Function Replacement
    of Phenomenological Single-Mode Equations in Semiconductor Microcavity Modeling.”
    <i>Applied Optics</i> 59, no. 22 (2020). <a href="https://doi.org/10.1364/ao.392014">https://doi.org/10.1364/ao.392014</a>.
  ieee: 'M. Carcamo, S. Schumacher, and R. Binder, “Transfer function replacement
    of phenomenological single-mode equations in semiconductor microcavity modeling,”
    <i>Applied Optics</i>, vol. 59, no. 22, Art. no. G112, 2020, doi: <a href="https://doi.org/10.1364/ao.392014">10.1364/ao.392014</a>.'
  mla: Carcamo, M., et al. “Transfer Function Replacement of Phenomenological Single-Mode
    Equations in Semiconductor Microcavity Modeling.” <i>Applied Optics</i>, vol.
    59, no. 22, G112, Optica Publishing Group, 2020, doi:<a href="https://doi.org/10.1364/ao.392014">10.1364/ao.392014</a>.
  short: M. Carcamo, S. Schumacher, R. Binder, Applied Optics 59 (2020).
date_created: 2023-01-26T16:04:00Z
date_updated: 2023-04-20T15:42:52Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '230'
- _id: '35'
doi: 10.1364/ao.392014
intvolume: '        59'
issue: '22'
keyword:
- Atomic and Molecular Physics
- and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
language:
- iso: eng
publication: Applied Optics
publication_identifier:
  issn:
  - 1559-128X
  - 2155-3165
publication_status: published
publisher: Optica Publishing Group
status: public
title: Transfer function replacement of phenomenological single-mode equations in
  semiconductor microcavity modeling
type: journal_article
user_id: '16199'
volume: 59
year: '2020'
...
---
_id: '43747'
abstract:
- lang: eng
  text: Vortices are topological objects representing the circular motion of a fluid.
    With their additional degree of freedom, the vorticity, they have been widely
    investigated in many physical systems and different materials for fundamental
    interest and for applications in data storage and information processing. Vortices
    have also been observed in non-equilibrium exciton-polariton condensates in planar
    semiconductor microcavities. There they appear spontaneously or can be created
    and pinned in space using ring-shaped optical excitation profiles. However, using
    the vortex state for information processing not only requires creation of a vortex
    but also efficient control over the vortex after its creation. Here we demonstrate
    a simple approach to control and switch a localized polariton vortex between opposite
    states. In our scheme, both the optical control of vorticity and its detection
    through the orbital angular momentum of the emitted light are implemented in a
    robust and practical manner.
author:
- first_name: Torsten
  full_name: Meier, Torsten
  id: '344'
  last_name: Meier
  orcid: 0000-0001-8864-2072
- first_name: Xuekai
  full_name: Ma, Xuekai
  last_name: Ma
- first_name: Bernd
  full_name: Berger, Bernd
  last_name: Berger
- first_name: Marc
  full_name: Aßmann, Marc
  last_name: Aßmann
- first_name: Rodislav
  full_name: Driben, Rodislav
  last_name: Driben
- first_name: Christian
  full_name: Schneider, Christian
  last_name: Schneider
- first_name: Sven
  full_name: Höfling, Sven
  last_name: Höfling
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Meier T, Ma X, Berger B, et al. Realization of all-optical vortex switching
    in exciton-polariton condensates. <i>Nature communications</i>. 2020;11(1):897.
    doi:<a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>
  apa: Meier, T., Ma, X., Berger, B., Aßmann, M., Driben, R., Schneider, C., Höfling,
    S., &#38; Schumacher, S. (2020). Realization of all-optical vortex switching in
    exciton-polariton condensates. <i>Nature Communications</i>, <i>11</i>(1), 897.
    <a href="https://doi.org/10.1038/s41467-020-14702-5">https://doi.org/10.1038/s41467-020-14702-5</a>
  bibtex: '@article{Meier_Ma_Berger_Aßmann_Driben_Schneider_Höfling_Schumacher_2020,
    title={Realization of all-optical vortex switching in exciton-polariton condensates},
    volume={11}, DOI={<a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>},
    number={1}, journal={Nature communications}, publisher={Nature Publishing Group
    UK}, author={Meier, Torsten and Ma, Xuekai and Berger, Bernd and Aßmann, Marc
    and Driben, Rodislav and Schneider, Christian and Höfling, Sven and Schumacher,
    Stefan}, year={2020}, pages={897} }'
  chicago: 'Meier, Torsten, Xuekai Ma, Bernd Berger, Marc Aßmann, Rodislav Driben,
    Christian Schneider, Sven Höfling, and Stefan Schumacher. “Realization of All-Optical
    Vortex Switching in Exciton-Polariton Condensates.” <i>Nature Communications</i>
    11, no. 1 (2020): 897. <a href="https://doi.org/10.1038/s41467-020-14702-5">https://doi.org/10.1038/s41467-020-14702-5</a>.'
  ieee: 'T. Meier <i>et al.</i>, “Realization of all-optical vortex switching in exciton-polariton
    condensates,” <i>Nature communications</i>, vol. 11, no. 1, p. 897, 2020, doi:
    <a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>.'
  mla: Meier, Torsten, et al. “Realization of All-Optical Vortex Switching in Exciton-Polariton
    Condensates.” <i>Nature Communications</i>, vol. 11, no. 1, Nature Publishing
    Group UK, 2020, p. 897, doi:<a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>.
  short: T. Meier, X. Ma, B. Berger, M. Aßmann, R. Driben, C. Schneider, S. Höfling,
    S. Schumacher, Nature Communications 11 (2020) 897.
date_created: 2023-04-16T01:50:29Z
date_updated: 2023-04-21T11:23:46Z
department:
- _id: '293'
- _id: '35'
- _id: '2'
- _id: '170'
- _id: '297'
- _id: '230'
doi: 10.1038/s41467-020-14702-5
intvolume: '        11'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.nature.com/articles/s41467-020-14702-5
oa: '1'
page: '897'
publication: Nature communications
publication_status: published
publisher: Nature Publishing Group UK
status: public
title: Realization of all-optical vortex switching in exciton-polariton condensates
type: journal_article
user_id: '16199'
volume: 11
year: '2020'
...
---
_id: '20580'
article_type: original
author:
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: B
  full_name: Berger, B
  last_name: Berger
- first_name: M
  full_name: Aßmann, M
  last_name: Aßmann
- first_name: R
  full_name: Driben, R
  last_name: Driben
- first_name: Torsten
  full_name: Meier, Torsten
  id: '344'
  last_name: Meier
  orcid: 0000-0001-8864-2072
- first_name: C
  full_name: Schneider, C
  last_name: Schneider
- first_name: S
  full_name: Höfling, S
  last_name: Höfling
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Ma X, Berger B, Aßmann M, et al. Realization of all-optical vortex switching
    in exciton-polariton condensates. <i>Nature Communications</i>. 2020;11(1):897.
    doi:<a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>
  apa: Ma, X., Berger, B., Aßmann, M., Driben, R., Meier, T., Schneider, C., Höfling,
    S., &#38; Schumacher, S. (2020). Realization of all-optical vortex switching in
    exciton-polariton condensates. <i>Nature Communications</i>, <i>11</i>(1), 897.
    <a href="https://doi.org/10.1038/s41467-020-14702-5">https://doi.org/10.1038/s41467-020-14702-5</a>
  bibtex: '@article{Ma_Berger_Aßmann_Driben_Meier_Schneider_Höfling_Schumacher_2020,
    title={Realization of all-optical vortex switching in exciton-polariton condensates},
    volume={11}, DOI={<a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>},
    number={1}, journal={Nature Communications}, author={Ma, Xuekai and Berger, B
    and Aßmann, M and Driben, R and Meier, Torsten and Schneider, C and Höfling, S
    and Schumacher, Stefan}, year={2020}, pages={897} }'
  chicago: 'Ma, Xuekai, B Berger, M Aßmann, R Driben, Torsten Meier, C Schneider,
    S Höfling, and Stefan Schumacher. “Realization of All-Optical Vortex Switching
    in Exciton-Polariton Condensates.” <i>Nature Communications</i> 11, no. 1 (2020):
    897. <a href="https://doi.org/10.1038/s41467-020-14702-5">https://doi.org/10.1038/s41467-020-14702-5</a>.'
  ieee: 'X. Ma <i>et al.</i>, “Realization of all-optical vortex switching in exciton-polariton
    condensates,” <i>Nature Communications</i>, vol. 11, no. 1, p. 897, 2020, doi:
    <a href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>.'
  mla: Ma, Xuekai, et al. “Realization of All-Optical Vortex Switching in Exciton-Polariton
    Condensates.” <i>Nature Communications</i>, vol. 11, no. 1, 2020, p. 897, doi:<a
    href="https://doi.org/10.1038/s41467-020-14702-5">10.1038/s41467-020-14702-5</a>.
  short: X. Ma, B. Berger, M. Aßmann, R. Driben, T. Meier, C. Schneider, S. Höfling,
    S. Schumacher, Nature Communications 11 (2020) 897.
date_created: 2020-12-02T09:05:02Z
date_updated: 2025-12-05T13:45:51Z
department:
- _id: '15'
- _id: '170'
- _id: '230'
- _id: '429'
- _id: '297'
- _id: '705'
- _id: '35'
- _id: '293'
doi: 10.1038/s41467-020-14702-5
external_id:
  pmid:
  - '32060289'
intvolume: '        11'
issue: '1'
language:
- iso: eng
page: '897'
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
status: public
title: Realization of all-optical vortex switching in exciton-polariton condensates
type: journal_article
user_id: '16199'
volume: 11
year: '2020'
...
---
_id: '20584'
article_type: letter_note
author:
- first_name: J
  full_name: Ren, J
  last_name: Ren
- first_name: Q
  full_name: Liao, Q
  last_name: Liao
- first_name: H
  full_name: Huang, H
  last_name: Huang
- first_name: Y
  full_name: Li, Y
  last_name: Li
- first_name: T
  full_name: Gao, T
  last_name: Gao
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: J
  full_name: Yao, J
  last_name: Yao
- first_name: S
  full_name: Bai, S
  last_name: Bai
- first_name: H
  full_name: Fu, H
  last_name: Fu
citation:
  ama: Ren J, Liao Q, Huang H, et al. Efficient Bosonic Condensation of Exciton Polaritons
    in an H-Aggregate Organic Single-Crystal Microcavity. <i>Nano Letters</i>. 2020;20(10):7550-7557.
    doi:<a href="https://doi.org/10.1021/acs.nanolett.0c03009">10.1021/acs.nanolett.0c03009</a>
  apa: Ren, J., Liao, Q., Huang, H., Li, Y., Gao, T., Ma, X., Schumacher, S., Yao,
    J., Bai, S., &#38; Fu, H. (2020). Efficient Bosonic Condensation of Exciton Polaritons
    in an H-Aggregate Organic Single-Crystal Microcavity. <i>Nano Letters</i>, <i>20</i>(10),
    7550–7557. <a href="https://doi.org/10.1021/acs.nanolett.0c03009">https://doi.org/10.1021/acs.nanolett.0c03009</a>
  bibtex: '@article{Ren_Liao_Huang_Li_Gao_Ma_Schumacher_Yao_Bai_Fu_2020, title={Efficient
    Bosonic Condensation of Exciton Polaritons in an H-Aggregate Organic Single-Crystal
    Microcavity.}, volume={20}, DOI={<a href="https://doi.org/10.1021/acs.nanolett.0c03009">10.1021/acs.nanolett.0c03009</a>},
    number={10}, journal={Nano Letters}, author={Ren, J and Liao, Q and Huang, H and
    Li, Y and Gao, T and Ma, Xuekai and Schumacher, Stefan and Yao, J and Bai, S and
    Fu, H}, year={2020}, pages={7550–7557} }'
  chicago: 'Ren, J, Q Liao, H Huang, Y Li, T Gao, Xuekai Ma, Stefan Schumacher, J
    Yao, S Bai, and H Fu. “Efficient Bosonic Condensation of Exciton Polaritons in
    an H-Aggregate Organic Single-Crystal Microcavity.” <i>Nano Letters</i> 20, no.
    10 (2020): 7550–57. <a href="https://doi.org/10.1021/acs.nanolett.0c03009">https://doi.org/10.1021/acs.nanolett.0c03009</a>.'
  ieee: 'J. Ren <i>et al.</i>, “Efficient Bosonic Condensation of Exciton Polaritons
    in an H-Aggregate Organic Single-Crystal Microcavity.,” <i>Nano Letters</i>, vol.
    20, no. 10, pp. 7550–7557, 2020, doi: <a href="https://doi.org/10.1021/acs.nanolett.0c03009">10.1021/acs.nanolett.0c03009</a>.'
  mla: Ren, J., et al. “Efficient Bosonic Condensation of Exciton Polaritons in an
    H-Aggregate Organic Single-Crystal Microcavity.” <i>Nano Letters</i>, vol. 20,
    no. 10, 2020, pp. 7550–57, doi:<a href="https://doi.org/10.1021/acs.nanolett.0c03009">10.1021/acs.nanolett.0c03009</a>.
  short: J. Ren, Q. Liao, H. Huang, Y. Li, T. Gao, X. Ma, S. Schumacher, J. Yao, S.
    Bai, H. Fu, Nano Letters 20 (2020) 7550–7557.
date_created: 2020-12-02T09:23:11Z
date_updated: 2025-12-05T13:49:17Z
department:
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '170'
- _id: '705'
- _id: '297'
- _id: '35'
doi: 10.1021/acs.nanolett.0c03009
external_id:
  pmid:
  - '32986448'
intvolume: '        20'
issue: '10'
language:
- iso: eng
page: 7550-7557
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Nano Letters
publication_identifier:
  issn:
  - 1530-6992
publication_status: published
status: public
title: Efficient Bosonic Condensation of Exciton Polaritons in an H-Aggregate Organic
  Single-Crystal Microcavity.
type: journal_article
user_id: '16199'
volume: 20
year: '2020'
...
---
_id: '20585'
article_type: letter_note
author:
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: YV
  full_name: Kartashov, YV
  last_name: Kartashov
- first_name: A
  full_name: Ferrando, A
  last_name: Ferrando
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Ma X, Kartashov Y, Ferrando A, Schumacher S. Topological edge states of nonequilibrium
    polaritons in hollow honeycomb arrays. <i>Optics Letters</i>. 2020;45(19):5311-5314.
    doi:<a href="https://doi.org/10.1364/ol.405844">10.1364/ol.405844</a>
  apa: Ma, X., Kartashov, Y., Ferrando, A., &#38; Schumacher, S. (2020). Topological
    edge states of nonequilibrium polaritons in hollow honeycomb arrays. <i>Optics
    Letters</i>, <i>45</i>(19), 5311–5314. <a href="https://doi.org/10.1364/ol.405844">https://doi.org/10.1364/ol.405844</a>
  bibtex: '@article{Ma_Kartashov_Ferrando_Schumacher_2020, title={Topological edge
    states of nonequilibrium polaritons in hollow honeycomb arrays.}, volume={45},
    DOI={<a href="https://doi.org/10.1364/ol.405844">10.1364/ol.405844</a>}, number={19},
    journal={Optics Letters}, author={Ma, Xuekai and Kartashov, YV and Ferrando, A
    and Schumacher, Stefan}, year={2020}, pages={5311–5314} }'
  chicago: 'Ma, Xuekai, YV Kartashov, A Ferrando, and Stefan Schumacher. “Topological
    Edge States of Nonequilibrium Polaritons in Hollow Honeycomb Arrays.” <i>Optics
    Letters</i> 45, no. 19 (2020): 5311–14. <a href="https://doi.org/10.1364/ol.405844">https://doi.org/10.1364/ol.405844</a>.'
  ieee: 'X. Ma, Y. Kartashov, A. Ferrando, and S. Schumacher, “Topological edge states
    of nonequilibrium polaritons in hollow honeycomb arrays.,” <i>Optics Letters</i>,
    vol. 45, no. 19, pp. 5311–5314, 2020, doi: <a href="https://doi.org/10.1364/ol.405844">10.1364/ol.405844</a>.'
  mla: Ma, Xuekai, et al. “Topological Edge States of Nonequilibrium Polaritons in
    Hollow Honeycomb Arrays.” <i>Optics Letters</i>, vol. 45, no. 19, 2020, pp. 5311–14,
    doi:<a href="https://doi.org/10.1364/ol.405844">10.1364/ol.405844</a>.
  short: X. Ma, Y. Kartashov, A. Ferrando, S. Schumacher, Optics Letters 45 (2020)
    5311–5314.
date_created: 2020-12-02T09:27:25Z
date_updated: 2025-12-05T13:48:35Z
department:
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '170'
- _id: '705'
- _id: '297'
- _id: '35'
doi: 10.1364/ol.405844
external_id:
  pmid:
  - '33001881'
intvolume: '        45'
issue: '19'
language:
- iso: eng
page: 5311-5314
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Optics Letters
publication_identifier:
  issn:
  - 0146-9592
  - 1539-4794
publication_status: published
status: public
title: Topological edge states of nonequilibrium polaritons in hollow honeycomb arrays.
type: journal_article
user_id: '16199'
volume: 45
year: '2020'
...
---
_id: '20587'
article_type: letter_note
author:
- first_name: F
  full_name: Barkhausen, F
  last_name: Barkhausen
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
citation:
  ama: Barkhausen F, Schumacher S, Ma X. Multistable circular currents of polariton
    condensates trapped in ring potentials. <i>Optics Letters</i>. 2020;45(5):1192-1195.
    doi:<a href="https://doi.org/10.1364/ol.386250">10.1364/ol.386250</a>
  apa: Barkhausen, F., Schumacher, S., &#38; Ma, X. (2020). Multistable circular currents
    of polariton condensates trapped in ring potentials. <i>Optics Letters</i>, <i>45</i>(5),
    1192–1195. <a href="https://doi.org/10.1364/ol.386250">https://doi.org/10.1364/ol.386250</a>
  bibtex: '@article{Barkhausen_Schumacher_Ma_2020, title={Multistable circular currents
    of polariton condensates trapped in ring potentials.}, volume={45}, DOI={<a href="https://doi.org/10.1364/ol.386250">10.1364/ol.386250</a>},
    number={5}, journal={Optics Letters}, author={Barkhausen, F and Schumacher, Stefan
    and Ma, Xuekai}, year={2020}, pages={1192–1195} }'
  chicago: 'Barkhausen, F, Stefan Schumacher, and Xuekai Ma. “Multistable Circular
    Currents of Polariton Condensates Trapped in Ring Potentials.” <i>Optics Letters</i>
    45, no. 5 (2020): 1192–95. <a href="https://doi.org/10.1364/ol.386250">https://doi.org/10.1364/ol.386250</a>.'
  ieee: 'F. Barkhausen, S. Schumacher, and X. Ma, “Multistable circular currents of
    polariton condensates trapped in ring potentials.,” <i>Optics Letters</i>, vol.
    45, no. 5, pp. 1192–1195, 2020, doi: <a href="https://doi.org/10.1364/ol.386250">10.1364/ol.386250</a>.'
  mla: Barkhausen, F., et al. “Multistable Circular Currents of Polariton Condensates
    Trapped in Ring Potentials.” <i>Optics Letters</i>, vol. 45, no. 5, 2020, pp.
    1192–95, doi:<a href="https://doi.org/10.1364/ol.386250">10.1364/ol.386250</a>.
  short: F. Barkhausen, S. Schumacher, X. Ma, Optics Letters 45 (2020) 1192–1195.
date_created: 2020-12-02T09:33:27Z
date_updated: 2025-12-05T13:48:17Z
department:
- _id: '230'
- _id: '429'
- _id: '297'
- _id: '15'
- _id: '170'
- _id: '705'
- _id: '35'
- _id: '429'
doi: 10.1364/ol.386250
external_id:
  pmid:
  - '32108803'
intvolume: '        45'
issue: '5'
language:
- iso: eng
page: 1192-1195
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Optics Letters
publication_identifier:
  issn:
  - 0146-9592
  - 1539-4794
publication_status: published
status: public
title: Multistable circular currents of polariton condensates trapped in ring potentials.
type: journal_article
user_id: '16199'
volume: 45
year: '2020'
...
---
_id: '20586'
article_type: letter_note
author:
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: YV
  full_name: Kartashov, YV
  last_name: Kartashov
- first_name: A
  full_name: Kavokin, A
  last_name: Kavokin
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Ma X, Kartashov Y, Kavokin A, Schumacher S. Chiral condensates in a polariton
    hexagonal ring. <i>Optics Letters</i>. 2020;45(20):5700-5703. doi:<a href="https://doi.org/10.1364/ol.405400">10.1364/ol.405400</a>
  apa: Ma, X., Kartashov, Y., Kavokin, A., &#38; Schumacher, S. (2020). Chiral condensates
    in a polariton hexagonal ring. <i>Optics Letters</i>, <i>45</i>(20), 5700–5703.
    <a href="https://doi.org/10.1364/ol.405400">https://doi.org/10.1364/ol.405400</a>
  bibtex: '@article{Ma_Kartashov_Kavokin_Schumacher_2020, title={Chiral condensates
    in a polariton hexagonal ring.}, volume={45}, DOI={<a href="https://doi.org/10.1364/ol.405400">10.1364/ol.405400</a>},
    number={20}, journal={Optics Letters}, author={Ma, Xuekai and Kartashov, YV and
    Kavokin, A and Schumacher, Stefan}, year={2020}, pages={5700–5703} }'
  chicago: 'Ma, Xuekai, YV Kartashov, A Kavokin, and Stefan Schumacher. “Chiral Condensates
    in a Polariton Hexagonal Ring.” <i>Optics Letters</i> 45, no. 20 (2020): 5700–5703.
    <a href="https://doi.org/10.1364/ol.405400">https://doi.org/10.1364/ol.405400</a>.'
  ieee: 'X. Ma, Y. Kartashov, A. Kavokin, and S. Schumacher, “Chiral condensates in
    a polariton hexagonal ring.,” <i>Optics Letters</i>, vol. 45, no. 20, pp. 5700–5703,
    2020, doi: <a href="https://doi.org/10.1364/ol.405400">10.1364/ol.405400</a>.'
  mla: Ma, Xuekai, et al. “Chiral Condensates in a Polariton Hexagonal Ring.” <i>Optics
    Letters</i>, vol. 45, no. 20, 2020, pp. 5700–03, doi:<a href="https://doi.org/10.1364/ol.405400">10.1364/ol.405400</a>.
  short: X. Ma, Y. Kartashov, A. Kavokin, S. Schumacher, Optics Letters 45 (2020)
    5700–5703.
date_created: 2020-12-02T09:29:56Z
date_updated: 2025-12-05T13:47:34Z
department:
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '170'
- _id: '705'
- _id: '297'
- _id: '35'
doi: 10.1364/ol.405400
external_id:
  pmid:
  - '33057263'
intvolume: '        45'
issue: '20'
language:
- iso: eng
page: 5700-5703
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Optics Letters
publication_identifier:
  issn:
  - 0146-9592
  - 1539-4794
publication_status: published
status: public
title: Chiral condensates in a polariton hexagonal ring.
type: journal_article
user_id: '16199'
volume: 45
year: '2020'
...
---
_id: '20581'
article_type: original
author:
- first_name: Matthias
  full_name: Pukrop, Matthias
  last_name: Pukrop
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
citation:
  ama: Pukrop M, Schumacher S, Ma X. Circular polarization reversal of half-vortex
    cores in polariton condensates. <i>Physical Review B</i>. 2020;101(20):205301.
    doi:<a href="https://doi.org/10.1103/PhysRevB.101.205301">10.1103/PhysRevB.101.205301</a>
  apa: Pukrop, M., Schumacher, S., &#38; Ma, X. (2020). Circular polarization reversal
    of half-vortex cores in polariton condensates. <i>Physical Review B</i>, <i>101</i>(20),
    205301. <a href="https://doi.org/10.1103/PhysRevB.101.205301">https://doi.org/10.1103/PhysRevB.101.205301</a>
  bibtex: '@article{Pukrop_Schumacher_Ma_2020, title={Circular polarization reversal
    of half-vortex cores in polariton condensates}, volume={101}, DOI={<a href="https://doi.org/10.1103/PhysRevB.101.205301">10.1103/PhysRevB.101.205301</a>},
    number={20}, journal={Physical Review B}, publisher={American Physical Society},
    author={Pukrop, Matthias and Schumacher, Stefan and Ma, Xuekai}, year={2020},
    pages={205301} }'
  chicago: 'Pukrop, Matthias, Stefan Schumacher, and Xuekai Ma. “Circular Polarization
    Reversal of Half-Vortex Cores in Polariton Condensates.” <i>Physical Review B</i>
    101, no. 20 (2020): 205301. <a href="https://doi.org/10.1103/PhysRevB.101.205301">https://doi.org/10.1103/PhysRevB.101.205301</a>.'
  ieee: 'M. Pukrop, S. Schumacher, and X. Ma, “Circular polarization reversal of half-vortex
    cores in polariton condensates,” <i>Physical Review B</i>, vol. 101, no. 20, p.
    205301, 2020, doi: <a href="https://doi.org/10.1103/PhysRevB.101.205301">10.1103/PhysRevB.101.205301</a>.'
  mla: Pukrop, Matthias, et al. “Circular Polarization Reversal of Half-Vortex Cores
    in Polariton Condensates.” <i>Physical Review B</i>, vol. 101, no. 20, American
    Physical Society, 2020, p. 205301, doi:<a href="https://doi.org/10.1103/PhysRevB.101.205301">10.1103/PhysRevB.101.205301</a>.
  short: M. Pukrop, S. Schumacher, X. Ma, Physical Review B 101 (2020) 205301.
date_created: 2020-12-02T09:08:29Z
date_updated: 2025-12-05T13:52:23Z
department:
- _id: '170'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '705'
- _id: '297'
- _id: '35'
doi: 10.1103/PhysRevB.101.205301
intvolume: '       101'
issue: '20'
language:
- iso: eng
page: '205301'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Physical Review B
publication_status: published
publisher: American Physical Society
status: public
title: Circular polarization reversal of half-vortex cores in polariton condensates
type: journal_article
user_id: '16199'
volume: 101
year: '2020'
...
---
_id: '20583'
article_type: original
author:
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: Yaroslav V.
  full_name: Kartashov, Yaroslav V.
  last_name: Kartashov
- first_name: Tingge
  full_name: Gao, Tingge
  last_name: Gao
- first_name: Lluis
  full_name: Torner, Lluis
  last_name: Torner
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Ma X, Kartashov YV, Gao T, Torner L, Schumacher S. Spiraling vortices in exciton-polariton
    condensates. <i>Physical Review B</i>. 2020;102(4):045309. doi:<a href="https://doi.org/10.1103/PhysRevB.102.045309">10.1103/PhysRevB.102.045309</a>
  apa: Ma, X., Kartashov, Y. V., Gao, T., Torner, L., &#38; Schumacher, S. (2020).
    Spiraling vortices in exciton-polariton condensates. <i>Physical Review B</i>,
    <i>102</i>(4), 045309. <a href="https://doi.org/10.1103/PhysRevB.102.045309">https://doi.org/10.1103/PhysRevB.102.045309</a>
  bibtex: '@article{Ma_Kartashov_Gao_Torner_Schumacher_2020, title={Spiraling vortices
    in exciton-polariton condensates}, volume={102}, DOI={<a href="https://doi.org/10.1103/PhysRevB.102.045309">10.1103/PhysRevB.102.045309</a>},
    number={4}, journal={Physical Review B}, publisher={American Physical Society},
    author={Ma, Xuekai and Kartashov, Yaroslav V. and Gao, Tingge and Torner, Lluis
    and Schumacher, Stefan}, year={2020}, pages={045309} }'
  chicago: 'Ma, Xuekai, Yaroslav V. Kartashov, Tingge Gao, Lluis Torner, and Stefan
    Schumacher. “Spiraling Vortices in Exciton-Polariton Condensates.” <i>Physical
    Review B</i> 102, no. 4 (2020): 045309. <a href="https://doi.org/10.1103/PhysRevB.102.045309">https://doi.org/10.1103/PhysRevB.102.045309</a>.'
  ieee: 'X. Ma, Y. V. Kartashov, T. Gao, L. Torner, and S. Schumacher, “Spiraling
    vortices in exciton-polariton condensates,” <i>Physical Review B</i>, vol. 102,
    no. 4, p. 045309, 2020, doi: <a href="https://doi.org/10.1103/PhysRevB.102.045309">10.1103/PhysRevB.102.045309</a>.'
  mla: Ma, Xuekai, et al. “Spiraling Vortices in Exciton-Polariton Condensates.” <i>Physical
    Review B</i>, vol. 102, no. 4, American Physical Society, 2020, p. 045309, doi:<a
    href="https://doi.org/10.1103/PhysRevB.102.045309">10.1103/PhysRevB.102.045309</a>.
  short: X. Ma, Y.V. Kartashov, T. Gao, L. Torner, S. Schumacher, Physical Review
    B 102 (2020) 045309.
date_created: 2020-12-02T09:15:30Z
date_updated: 2025-12-05T13:49:47Z
department:
- _id: '170'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '297'
- _id: '705'
- _id: '35'
doi: 10.1103/PhysRevB.102.045309
intvolume: '       102'
issue: '4'
language:
- iso: eng
page: '045309'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Physical Review B
publication_status: published
publisher: American Physical Society
status: public
title: Spiraling vortices in exciton-polariton condensates
type: journal_article
user_id: '16199'
volume: 102
year: '2020'
...
---
_id: '20578'
article_type: original
author:
- first_name: R
  full_name: Driben, R
  last_name: Driben
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: Torsten
  full_name: Meier, Torsten
  id: '344'
  last_name: Meier
  orcid: 0000-0001-8864-2072
citation:
  ama: Driben R, Ma X, Schumacher S, Meier T. Bloch oscillations of multidimensional
    dark soliton wave packets and light bullets. <i>Optics Letters</i>. 2019;44(6):1327-1330.
    doi:<a href="https://doi.org/10.1364/ol.44.001327">10.1364/ol.44.001327</a>
  apa: Driben, R., Ma, X., Schumacher, S., &#38; Meier, T. (2019). Bloch oscillations
    of multidimensional dark soliton wave packets and light bullets. <i>Optics Letters</i>,
    <i>44</i>(6), 1327–1330. <a href="https://doi.org/10.1364/ol.44.001327">https://doi.org/10.1364/ol.44.001327</a>
  bibtex: '@article{Driben_Ma_Schumacher_Meier_2019, title={Bloch oscillations of
    multidimensional dark soliton wave packets and light bullets}, volume={44}, DOI={<a
    href="https://doi.org/10.1364/ol.44.001327">10.1364/ol.44.001327</a>}, number={6},
    journal={Optics Letters}, author={Driben, R and Ma, Xuekai and Schumacher, Stefan
    and Meier, Torsten}, year={2019}, pages={1327–1330} }'
  chicago: 'Driben, R, Xuekai Ma, Stefan Schumacher, and Torsten Meier. “Bloch Oscillations
    of Multidimensional Dark Soliton Wave Packets and Light Bullets.” <i>Optics Letters</i>
    44, no. 6 (2019): 1327–30. <a href="https://doi.org/10.1364/ol.44.001327">https://doi.org/10.1364/ol.44.001327</a>.'
  ieee: 'R. Driben, X. Ma, S. Schumacher, and T. Meier, “Bloch oscillations of multidimensional
    dark soliton wave packets and light bullets,” <i>Optics Letters</i>, vol. 44,
    no. 6, pp. 1327–1330, 2019, doi: <a href="https://doi.org/10.1364/ol.44.001327">10.1364/ol.44.001327</a>.'
  mla: Driben, R., et al. “Bloch Oscillations of Multidimensional Dark Soliton Wave
    Packets and Light Bullets.” <i>Optics Letters</i>, vol. 44, no. 6, 2019, pp. 1327–30,
    doi:<a href="https://doi.org/10.1364/ol.44.001327">10.1364/ol.44.001327</a>.
  short: R. Driben, X. Ma, S. Schumacher, T. Meier, Optics Letters 44 (2019) 1327–1330.
date_created: 2020-12-02T08:58:21Z
date_updated: 2025-12-05T13:45:12Z
department:
- _id: '15'
- _id: '170'
- _id: '230'
- _id: '429'
- _id: '297'
- _id: '705'
- _id: '35'
- _id: '293'
doi: 10.1364/ol.44.001327
external_id:
  pmid:
  - '30874642'
intvolume: '        44'
issue: '6'
language:
- iso: eng
page: 1327-1330
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Optics Letters
publication_identifier:
  issn:
  - 0146-9592
  - 1539-4794
publication_status: published
status: public
title: Bloch oscillations of multidimensional dark soliton wave packets and light
  bullets
type: journal_article
user_id: '16199'
volume: 44
year: '2019'
...
---
_id: '15851'
article_number: '123008'
author:
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: Yaroslav Y
  full_name: Kartashov, Yaroslav Y
  last_name: Kartashov
- first_name: Tingge
  full_name: Gao, Tingge
  last_name: Gao
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Ma X, Kartashov YY, Gao T, Schumacher S. Controllable high-speed polariton
    waves in a PT-symmetric lattice. <i>New Journal of Physics</i>. 2019;21. doi:<a
    href="https://doi.org/10.1088/1367-2630/ab5a9b">10.1088/1367-2630/ab5a9b</a>
  apa: Ma, X., Kartashov, Y. Y., Gao, T., &#38; Schumacher, S. (2019). Controllable
    high-speed polariton waves in a PT-symmetric lattice. <i>New Journal of Physics</i>,
    <i>21</i>, Article 123008. <a href="https://doi.org/10.1088/1367-2630/ab5a9b">https://doi.org/10.1088/1367-2630/ab5a9b</a>
  bibtex: '@article{Ma_Kartashov_Gao_Schumacher_2019, title={Controllable high-speed
    polariton waves in a PT-symmetric lattice}, volume={21}, DOI={<a href="https://doi.org/10.1088/1367-2630/ab5a9b">10.1088/1367-2630/ab5a9b</a>},
    number={123008}, journal={New Journal of Physics}, author={Ma, Xuekai and Kartashov,
    Yaroslav Y and Gao, Tingge and Schumacher, Stefan}, year={2019} }'
  chicago: Ma, Xuekai, Yaroslav Y Kartashov, Tingge Gao, and Stefan Schumacher. “Controllable
    High-Speed Polariton Waves in a PT-Symmetric Lattice.” <i>New Journal of Physics</i>
    21 (2019). <a href="https://doi.org/10.1088/1367-2630/ab5a9b">https://doi.org/10.1088/1367-2630/ab5a9b</a>.
  ieee: 'X. Ma, Y. Y. Kartashov, T. Gao, and S. Schumacher, “Controllable high-speed
    polariton waves in a PT-symmetric lattice,” <i>New Journal of Physics</i>, vol.
    21, Art. no. 123008, 2019, doi: <a href="https://doi.org/10.1088/1367-2630/ab5a9b">10.1088/1367-2630/ab5a9b</a>.'
  mla: Ma, Xuekai, et al. “Controllable High-Speed Polariton Waves in a PT-Symmetric
    Lattice.” <i>New Journal of Physics</i>, vol. 21, 123008, 2019, doi:<a href="https://doi.org/10.1088/1367-2630/ab5a9b">10.1088/1367-2630/ab5a9b</a>.
  short: X. Ma, Y.Y. Kartashov, T. Gao, S. Schumacher, New Journal of Physics 21 (2019).
date_created: 2020-02-10T11:35:57Z
date_updated: 2025-12-05T13:53:04Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '35'
- _id: '27'
doi: 10.1088/1367-2630/ab5a9b
intvolume: '        21'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: New Journal of Physics
publication_identifier:
  issn:
  - 1367-2630
publication_status: published
status: public
title: Controllable high-speed polariton waves in a PT-symmetric lattice
type: journal_article
user_id: '16199'
volume: 21
year: '2019'
...
---
_id: '13340'
abstract:
- lang: eng
  text: "Spontaneous formation of transverse patterns is ubiquitous in nonlinear\r\ndynamical
    systems of all kinds. An aspect of particular interest is the active\r\ncontrol
    of such patterns. In nonlinear optical systems this can be used for\r\nall-optical
    switching with transistor-like performance, for example realized\r\nwith polaritons
    in a planar quantum-well semiconductor microcavity. Here we\r\nfocus on a specific
    configuration which takes advantage of the intricate\r\npolarization dependencies
    in the interacting optically driven polariton system.\r\nBesides detailed numerical
    simulations of the coupled light-field exciton\r\ndynamics, in the present paper
    we focus on the derivation of a simplified\r\npopulation competition model giving
    detailed insight into the underlying\r\nmechanisms from a nonlinear dynamical
    systems perspective. We show that such a\r\nmodel takes the form of a generalized
    Lotka-Volterra system for two competing\r\npopulations explicitly including a
    source term that enables external control.\r\nWe present a comprehensive analysis
    both of the existence and stability of\r\nstationary states in the parameter space
    spanned by spatial anisotropy and\r\nexternal control strength. We also construct
    phase boundaries in non-trivial\r\nregions and characterize emerging bifurcations.
    The population competition\r\nmodel reproduces all key features of the switching
    observed in full numerical\r\nsimulations of the rather complex semiconductor
    system and at the same time is\r\nsimple enough for a fully analytical understanding
    of the system dynamics."
author:
- first_name: Matthias
  full_name: Pukrop, Matthias
  last_name: Pukrop
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Pukrop M, Schumacher S. Externally Controlled Lotka-Volterra Dynamics in a
    Linearly Polarized  Polariton Fluid. <i>arXiv:190312534</i>. Published online
    2019.
  apa: Pukrop, M., &#38; Schumacher, S. (2019). Externally Controlled Lotka-Volterra
    Dynamics in a Linearly Polarized  Polariton Fluid. In <i>arXiv:1903.12534</i>.
  bibtex: '@article{Pukrop_Schumacher_2019, title={Externally Controlled Lotka-Volterra
    Dynamics in a Linearly Polarized  Polariton Fluid}, journal={arXiv:1903.12534},
    author={Pukrop, Matthias and Schumacher, Stefan}, year={2019} }'
  chicago: Pukrop, Matthias, and Stefan Schumacher. “Externally Controlled Lotka-Volterra
    Dynamics in a Linearly Polarized  Polariton Fluid.” <i>ArXiv:1903.12534</i>, 2019.
  ieee: M. Pukrop and S. Schumacher, “Externally Controlled Lotka-Volterra Dynamics
    in a Linearly Polarized  Polariton Fluid,” <i>arXiv:1903.12534</i>. 2019.
  mla: Pukrop, Matthias, and Stefan Schumacher. “Externally Controlled Lotka-Volterra
    Dynamics in a Linearly Polarized  Polariton Fluid.” <i>ArXiv:1903.12534</i>, 2019.
  short: M. Pukrop, S. Schumacher, ArXiv:1903.12534 (2019).
date_created: 2019-09-19T13:18:47Z
date_updated: 2025-12-05T14:30:36Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '230'
- _id: '35'
- _id: '27'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: arXiv:1903.12534
status: public
title: Externally Controlled Lotka-Volterra Dynamics in a Linearly Polarized  Polariton
  Fluid
type: preprint
user_id: '16199'
year: '2019'
...
---
_id: '13347'
abstract:
- lang: eng
  text: "<jats:p>&lt;div&gt;\r\n\t\t\t&lt;div&gt;\r\n\t\t\t\t&lt;div&gt;\r\n\t\t\t\t\t&lt;p&gt;Molecular
    doping in conjugated polymers is a crucial process for their application in organic\r\nphotovoltaics
    and optoelectronics. In the present work we theoretically investigate p-type molecu-\r\nlar
    doping in a series of (poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b”]dithiophene)-alt-\r\n4,7-(2,1,3-benzothiadiazole)]
    (PCPDT-BT) conjugated oligomers with different lengths and three\r\nwidely-used
    dopants with different electron affinities, namely F4TCNQ, F6TCNNQ, and CN6-CP.\r\nWe
    study in detail the molecular geometry of possible oligomer-dopant complexes and
    its influence\r\non the doping mechanisms and electronic system properties. We
    find that the mechanisms of dop-\r\ning and charge transfer observed sensitively
    depend on the specific geometry of the oligomer-dopant\r\ncomplexes. For a given
    complex different geometries may exist, some of which show transfer of\r\nan entire
    electron from the oligomer chain onto the dopant molecule resulting in an integer-charge\r\ntransfer
    complex, leaving the system in a ground state with broken spin symmetry. In other
    ge-\r\nometries merely hybridization of oligomer and dopant frontier orbitals
    occurs with partial charge\r\ntransfer but spin-symmetric ground state. Considering
    the resulting electronic density of states both\r\ncases may well contribute to
    an increased electrical conductivity of corresponding film samples while\r\nthe
    underlying physical mechanisms are entirely different.\r\n&lt;/p&gt;\r\n\t\t\t\t&lt;/div&gt;\r\n\t\t\t&lt;/div&gt;\r\n\t\t&lt;/div&gt;</jats:p>"
author:
- first_name: Chuan-Ding
  full_name: Dong, Chuan-Ding
  id: '67188'
  last_name: Dong
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: 'Dong C-D, Schumacher S. Molecular Doping of PCPDT-BT Copolymers: Comparison
    of Molecular Complexes with and Without Integer Charge Transfer. Published online
    2019.'
  apa: 'Dong, C.-D., &#38; Schumacher, S. (2019). <i>Molecular Doping of PCPDT-BT
    Copolymers: Comparison of Molecular Complexes with and Without Integer Charge
    Transfer</i>.'
  bibtex: '@article{Dong_Schumacher_2019, title={Molecular Doping of PCPDT-BT Copolymers:
    Comparison of Molecular Complexes with and Without Integer Charge Transfer}, author={Dong,
    Chuan-Ding and Schumacher, Stefan}, year={2019} }'
  chicago: 'Dong, Chuan-Ding, and Stefan Schumacher. “Molecular Doping of PCPDT-BT
    Copolymers: Comparison of Molecular Complexes with and Without Integer Charge
    Transfer,” 2019.'
  ieee: 'C.-D. Dong and S. Schumacher, “Molecular Doping of PCPDT-BT Copolymers: Comparison
    of Molecular Complexes with and Without Integer Charge Transfer.” 2019.'
  mla: 'Dong, Chuan-Ding, and Stefan Schumacher. <i>Molecular Doping of PCPDT-BT Copolymers:
    Comparison of Molecular Complexes with and Without Integer Charge Transfer</i>.
    2019.'
  short: C.-D. Dong, S. Schumacher, (2019).
date_created: 2019-09-19T13:44:34Z
date_updated: 2025-12-05T14:31:11Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '230'
- _id: '35'
- _id: '27'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication_status: published
status: public
title: 'Molecular Doping of PCPDT-BT Copolymers: Comparison of Molecular Complexes
  with and Without Integer Charge Transfer'
type: preprint
user_id: '16199'
year: '2019'
...
---
_id: '13343'
author:
- first_name: Joachim
  full_name: Vollbrecht, Joachim
  last_name: Vollbrecht
- first_name: Christian
  full_name: Wiebeler, Christian
  last_name: Wiebeler
- first_name: Harald
  full_name: Bock, Harald
  last_name: Bock
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: Heinz-Siegfried
  full_name: Kitzerow, Heinz-Siegfried
  id: '254'
  last_name: Kitzerow
citation:
  ama: 'Vollbrecht J, Wiebeler C, Bock H, Schumacher S, Kitzerow H-S. Curved Polar
    Dibenzocoronene Esters and Imides versus Their Planar Centrosymmetric Homologs:
    Photophysical and Optoelectronic Analysis. <i>The Journal of Physical Chemistry
    C</i>. 2019;123(7):4483-4492. doi:<a href="https://doi.org/10.1021/acs.jpcc.8b10730">10.1021/acs.jpcc.8b10730</a>'
  apa: 'Vollbrecht, J., Wiebeler, C., Bock, H., Schumacher, S., &#38; Kitzerow, H.-S.
    (2019). Curved Polar Dibenzocoronene Esters and Imides versus Their Planar Centrosymmetric
    Homologs: Photophysical and Optoelectronic Analysis. <i>The Journal of Physical
    Chemistry C</i>, <i>123</i>(7), 4483–4492. <a href="https://doi.org/10.1021/acs.jpcc.8b10730">https://doi.org/10.1021/acs.jpcc.8b10730</a>'
  bibtex: '@article{Vollbrecht_Wiebeler_Bock_Schumacher_Kitzerow_2019, title={Curved
    Polar Dibenzocoronene Esters and Imides versus Their Planar Centrosymmetric Homologs:
    Photophysical and Optoelectronic Analysis}, volume={123}, DOI={<a href="https://doi.org/10.1021/acs.jpcc.8b10730">10.1021/acs.jpcc.8b10730</a>},
    number={7}, journal={The Journal of Physical Chemistry C}, author={Vollbrecht,
    Joachim and Wiebeler, Christian and Bock, Harald and Schumacher, Stefan and Kitzerow,
    Heinz-Siegfried}, year={2019}, pages={4483–4492} }'
  chicago: 'Vollbrecht, Joachim, Christian Wiebeler, Harald Bock, Stefan Schumacher,
    and Heinz-Siegfried Kitzerow. “Curved Polar Dibenzocoronene Esters and Imides
    versus Their Planar Centrosymmetric Homologs: Photophysical and Optoelectronic
    Analysis.” <i>The Journal of Physical Chemistry C</i> 123, no. 7 (2019): 4483–92.
    <a href="https://doi.org/10.1021/acs.jpcc.8b10730">https://doi.org/10.1021/acs.jpcc.8b10730</a>.'
  ieee: 'J. Vollbrecht, C. Wiebeler, H. Bock, S. Schumacher, and H.-S. Kitzerow, “Curved
    Polar Dibenzocoronene Esters and Imides versus Their Planar Centrosymmetric Homologs:
    Photophysical and Optoelectronic Analysis,” <i>The Journal of Physical Chemistry
    C</i>, vol. 123, no. 7, pp. 4483–4492, 2019, doi: <a href="https://doi.org/10.1021/acs.jpcc.8b10730">10.1021/acs.jpcc.8b10730</a>.'
  mla: 'Vollbrecht, Joachim, et al. “Curved Polar Dibenzocoronene Esters and Imides
    versus Their Planar Centrosymmetric Homologs: Photophysical and Optoelectronic
    Analysis.” <i>The Journal of Physical Chemistry C</i>, vol. 123, no. 7, 2019,
    pp. 4483–92, doi:<a href="https://doi.org/10.1021/acs.jpcc.8b10730">10.1021/acs.jpcc.8b10730</a>.'
  short: J. Vollbrecht, C. Wiebeler, H. Bock, S. Schumacher, H.-S. Kitzerow, The Journal
    of Physical Chemistry C 123 (2019) 4483–4492.
date_created: 2019-09-19T13:36:01Z
date_updated: 2025-12-05T14:29:56Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '313'
- _id: '230'
- _id: '35'
- _id: '27'
- _id: '2'
doi: 10.1021/acs.jpcc.8b10730
intvolume: '       123'
issue: '7'
language:
- iso: eng
page: 4483-4492
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: The Journal of Physical Chemistry C
publication_identifier:
  issn:
  - 1932-7447
  - 1932-7455
publication_status: published
status: public
title: 'Curved Polar Dibenzocoronene Esters and Imides versus Their Planar Centrosymmetric
  Homologs: Photophysical and Optoelectronic Analysis'
type: journal_article
user_id: '16199'
volume: 123
year: '2019'
...
---
_id: '20576'
article_number: '227404'
article_type: original
author:
- first_name: Xuekai
  full_name: Ma, Xuekai
  id: '59416'
  last_name: Ma
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Ma X, Schumacher S. Vortex Multistability and Bessel Vortices in Polariton
    Condensates. <i>Physical Review Letters</i>. 2018;121(22). doi:<a href="https://doi.org/10.1103/physrevlett.121.227404">10.1103/physrevlett.121.227404</a>
  apa: Ma, X., &#38; Schumacher, S. (2018). Vortex Multistability and Bessel Vortices
    in Polariton Condensates. <i>Physical Review Letters</i>, <i>121</i>(22), Article
    227404. <a href="https://doi.org/10.1103/physrevlett.121.227404">https://doi.org/10.1103/physrevlett.121.227404</a>
  bibtex: '@article{Ma_Schumacher_2018, title={Vortex Multistability and Bessel Vortices
    in Polariton Condensates.}, volume={121}, DOI={<a href="https://doi.org/10.1103/physrevlett.121.227404">10.1103/physrevlett.121.227404</a>},
    number={22227404}, journal={Physical Review Letters}, publisher={APS}, author={Ma,
    Xuekai and Schumacher, Stefan}, year={2018} }'
  chicago: Ma, Xuekai, and Stefan Schumacher. “Vortex Multistability and Bessel Vortices
    in Polariton Condensates.” <i>Physical Review Letters</i> 121, no. 22 (2018).
    <a href="https://doi.org/10.1103/physrevlett.121.227404">https://doi.org/10.1103/physrevlett.121.227404</a>.
  ieee: 'X. Ma and S. Schumacher, “Vortex Multistability and Bessel Vortices in Polariton
    Condensates.,” <i>Physical Review Letters</i>, vol. 121, no. 22, Art. no. 227404,
    2018, doi: <a href="https://doi.org/10.1103/physrevlett.121.227404">10.1103/physrevlett.121.227404</a>.'
  mla: Ma, Xuekai, and Stefan Schumacher. “Vortex Multistability and Bessel Vortices
    in Polariton Condensates.” <i>Physical Review Letters</i>, vol. 121, no. 22, 227404,
    APS, 2018, doi:<a href="https://doi.org/10.1103/physrevlett.121.227404">10.1103/physrevlett.121.227404</a>.
  short: X. Ma, S. Schumacher, Physical Review Letters 121 (2018).
date_created: 2020-12-02T08:46:13Z
date_updated: 2025-12-05T14:33:05Z
department:
- _id: '15'
- _id: '230'
- _id: '429'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '35'
doi: 10.1103/physrevlett.121.227404
external_id:
  pmid:
  - '30547643'
intvolume: '       121'
issue: '22'
language:
- iso: eng
pmid: '1'
project:
- _id: '53'
  name: TRR 142
- _id: '54'
  name: TRR 142 - Project Area A
- _id: '61'
  name: TRR 142 - Subproject A4
- _id: '53'
  name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
    zu funktionellen Strukturen'
publication: Physical Review Letters
publication_identifier:
  issn:
  - 0031-9007
  - 1079-7114
publication_status: published
publisher: APS
status: public
title: Vortex Multistability and Bessel Vortices in Polariton Condensates.
type: journal_article
user_id: '16199'
volume: 121
year: '2018'
...
---
_id: '13348'
article_number: '146'
author:
- first_name: Samuel M. H.
  full_name: Luk, Samuel M. H.
  last_name: Luk
- first_name: P.
  full_name: Lewandowski, P.
  last_name: Lewandowski
- first_name: N. H.
  full_name: Kwong, N. H.
  last_name: Kwong
- first_name: E.
  full_name: Baudin, E.
  last_name: Baudin
- first_name: O.
  full_name: Lafont, O.
  last_name: Lafont
- first_name: J.
  full_name: Tignon, J.
  last_name: Tignon
- first_name: P. T.
  full_name: Leung, P. T.
  last_name: Leung
- first_name: Ch. K. P.
  full_name: Chan, Ch. K. P.
  last_name: Chan
- first_name: M.
  full_name: Babilon, M.
  last_name: Babilon
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: R.
  full_name: Binder, R.
  last_name: Binder
citation:
  ama: Luk SMH, Lewandowski P, Kwong NH, et al. Theory of optically controlled anisotropic
    polariton transport in semiconductor double microcavities. <i>Journal of the Optical
    Society of America B</i>. 2018;35(1). doi:<a href="https://doi.org/10.1364/josab.35.000146">10.1364/josab.35.000146</a>
  apa: Luk, S. M. H., Lewandowski, P., Kwong, N. H., Baudin, E., Lafont, O., Tignon,
    J., Leung, P. T., Chan, Ch. K. P., Babilon, M., Schumacher, S., &#38; Binder,
    R. (2018). Theory of optically controlled anisotropic polariton transport in semiconductor
    double microcavities. <i>Journal of the Optical Society of America B</i>, <i>35</i>(1),
    Article 146. <a href="https://doi.org/10.1364/josab.35.000146">https://doi.org/10.1364/josab.35.000146</a>
  bibtex: '@article{Luk_Lewandowski_Kwong_Baudin_Lafont_Tignon_Leung_Chan_Babilon_Schumacher_et
    al._2018, title={Theory of optically controlled anisotropic polariton transport
    in semiconductor double microcavities}, volume={35}, DOI={<a href="https://doi.org/10.1364/josab.35.000146">10.1364/josab.35.000146</a>},
    number={1146}, journal={Journal of the Optical Society of America B}, author={Luk,
    Samuel M. H. and Lewandowski, P. and Kwong, N. H. and Baudin, E. and Lafont, O.
    and Tignon, J. and Leung, P. T. and Chan, Ch. K. P. and Babilon, M. and Schumacher,
    Stefan and et al.}, year={2018} }'
  chicago: Luk, Samuel M. H., P. Lewandowski, N. H. Kwong, E. Baudin, O. Lafont, J.
    Tignon, P. T. Leung, et al. “Theory of Optically Controlled Anisotropic Polariton
    Transport in Semiconductor Double Microcavities.” <i>Journal of the Optical Society
    of America B</i> 35, no. 1 (2018). <a href="https://doi.org/10.1364/josab.35.000146">https://doi.org/10.1364/josab.35.000146</a>.
  ieee: 'S. M. H. Luk <i>et al.</i>, “Theory of optically controlled anisotropic polariton
    transport in semiconductor double microcavities,” <i>Journal of the Optical Society
    of America B</i>, vol. 35, no. 1, Art. no. 146, 2018, doi: <a href="https://doi.org/10.1364/josab.35.000146">10.1364/josab.35.000146</a>.'
  mla: Luk, Samuel M. H., et al. “Theory of Optically Controlled Anisotropic Polariton
    Transport in Semiconductor Double Microcavities.” <i>Journal of the Optical Society
    of America B</i>, vol. 35, no. 1, 146, 2018, doi:<a href="https://doi.org/10.1364/josab.35.000146">10.1364/josab.35.000146</a>.
  short: S.M.H. Luk, P. Lewandowski, N.H. Kwong, E. Baudin, O. Lafont, J. Tignon,
    P.T. Leung, Ch.K.P. Chan, M. Babilon, S. Schumacher, R. Binder, Journal of the
    Optical Society of America B 35 (2018).
date_created: 2019-09-19T13:50:06Z
date_updated: 2025-12-05T14:33:42Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '230'
- _id: '429'
- _id: '27'
- _id: '35'
doi: 10.1364/josab.35.000146
intvolume: '        35'
issue: '1'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
  name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Journal of the Optical Society of America B
publication_identifier:
  issn:
  - 0740-3224
  - 1520-8540
publication_status: published
status: public
title: Theory of optically controlled anisotropic polariton transport in semiconductor
  double microcavities
type: journal_article
user_id: '16199'
volume: 35
year: '2018'
...
---
_id: '13351'
author:
- first_name: Dominik
  full_name: Breddermann, Dominik
  last_name: Breddermann
- first_name: Tom
  full_name: Praschan, Tom
  last_name: Praschan
- first_name: Dirk Florian
  full_name: Heinze, Dirk Florian
  id: '10904'
  last_name: Heinze
- first_name: Rolf
  full_name: Binder, Rolf
  last_name: Binder
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Breddermann D, Praschan T, Heinze DF, Binder R, Schumacher S. Microscopic theory
    of cavity-enhanced single-photon emission from optical two-photon Raman processes.
    <i>Physical Review B</i>. 2018;97(12). doi:<a href="https://doi.org/10.1103/physrevb.97.125303">10.1103/physrevb.97.125303</a>
  apa: Breddermann, D., Praschan, T., Heinze, D. F., Binder, R., &#38; Schumacher,
    S. (2018). Microscopic theory of cavity-enhanced single-photon emission from optical
    two-photon Raman processes. <i>Physical Review B</i>, <i>97</i>(12). <a href="https://doi.org/10.1103/physrevb.97.125303">https://doi.org/10.1103/physrevb.97.125303</a>
  bibtex: '@article{Breddermann_Praschan_Heinze_Binder_Schumacher_2018, title={Microscopic
    theory of cavity-enhanced single-photon emission from optical two-photon Raman
    processes}, volume={97}, DOI={<a href="https://doi.org/10.1103/physrevb.97.125303">10.1103/physrevb.97.125303</a>},
    number={12}, journal={Physical Review B}, author={Breddermann, Dominik and Praschan,
    Tom and Heinze, Dirk Florian and Binder, Rolf and Schumacher, Stefan}, year={2018}
    }'
  chicago: Breddermann, Dominik, Tom Praschan, Dirk Florian Heinze, Rolf Binder, and
    Stefan Schumacher. “Microscopic Theory of Cavity-Enhanced Single-Photon Emission
    from Optical Two-Photon Raman Processes.” <i>Physical Review B</i> 97, no. 12
    (2018). <a href="https://doi.org/10.1103/physrevb.97.125303">https://doi.org/10.1103/physrevb.97.125303</a>.
  ieee: 'D. Breddermann, T. Praschan, D. F. Heinze, R. Binder, and S. Schumacher,
    “Microscopic theory of cavity-enhanced single-photon emission from optical two-photon
    Raman processes,” <i>Physical Review B</i>, vol. 97, no. 12, 2018, doi: <a href="https://doi.org/10.1103/physrevb.97.125303">10.1103/physrevb.97.125303</a>.'
  mla: Breddermann, Dominik, et al. “Microscopic Theory of Cavity-Enhanced Single-Photon
    Emission from Optical Two-Photon Raman Processes.” <i>Physical Review B</i>, vol.
    97, no. 12, 2018, doi:<a href="https://doi.org/10.1103/physrevb.97.125303">10.1103/physrevb.97.125303</a>.
  short: D. Breddermann, T. Praschan, D.F. Heinze, R. Binder, S. Schumacher, Physical
    Review B 97 (2018).
date_created: 2019-09-19T13:57:23Z
date_updated: 2025-12-05T14:34:12Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '27'
doi: 10.1103/physrevb.97.125303
funded_apc: '1'
intvolume: '        97'
issue: '12'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '53'
  name: 'TRR 142: TRR 142'
- _id: '54'
  name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '60'
  name: 'TRR 142 - A03: TRR 142 - Subproject A03'
publication: Physical Review B
publication_identifier:
  issn:
  - 2469-9950
  - 2469-9969
publication_status: published
status: public
title: Microscopic theory of cavity-enhanced single-photon emission from optical two-photon
  Raman processes
type: journal_article
user_id: '16199'
volume: 97
year: '2018'
...
---
_id: '13353'
article_number: '31056'
author:
- first_name: Przemyslaw
  full_name: Lewandowski, Przemyslaw
  last_name: Lewandowski
- first_name: Samuel M. H.
  full_name: Luk, Samuel M. H.
  last_name: Luk
- first_name: Chris K. P.
  full_name: Chan, Chris K. P.
  last_name: Chan
- first_name: P. T.
  full_name: Leung, P. T.
  last_name: Leung
- first_name: N. H.
  full_name: Kwong, N. H.
  last_name: Kwong
- first_name: Rolf
  full_name: Binder, Rolf
  last_name: Binder
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
citation:
  ama: Lewandowski P, Luk SMH, Chan CKP, et al. Directional optical switching and
    transistor functionality using optical parametric oscillation in a spinor polariton
    fluid. <i>Optics Express</i>. 2017;25(25). doi:<a href="https://doi.org/10.1364/oe.25.031056">10.1364/oe.25.031056</a>
  apa: Lewandowski, P., Luk, S. M. H., Chan, C. K. P., Leung, P. T., Kwong, N. H.,
    Binder, R., &#38; Schumacher, S. (2017). Directional optical switching and transistor
    functionality using optical parametric oscillation in a spinor polariton fluid.
    <i>Optics Express</i>, <i>25</i>(25), Article 31056. <a href="https://doi.org/10.1364/oe.25.031056">https://doi.org/10.1364/oe.25.031056</a>
  bibtex: '@article{Lewandowski_Luk_Chan_Leung_Kwong_Binder_Schumacher_2017, title={Directional
    optical switching and transistor functionality using optical parametric oscillation
    in a spinor polariton fluid}, volume={25}, DOI={<a href="https://doi.org/10.1364/oe.25.031056">10.1364/oe.25.031056</a>},
    number={2531056}, journal={Optics Express}, author={Lewandowski, Przemyslaw and
    Luk, Samuel M. H. and Chan, Chris K. P. and Leung, P. T. and Kwong, N. H. and
    Binder, Rolf and Schumacher, Stefan}, year={2017} }'
  chicago: Lewandowski, Przemyslaw, Samuel M. H. Luk, Chris K. P. Chan, P. T. Leung,
    N. H. Kwong, Rolf Binder, and Stefan Schumacher. “Directional Optical Switching
    and Transistor Functionality Using Optical Parametric Oscillation in a Spinor
    Polariton Fluid.” <i>Optics Express</i> 25, no. 25 (2017). <a href="https://doi.org/10.1364/oe.25.031056">https://doi.org/10.1364/oe.25.031056</a>.
  ieee: 'P. Lewandowski <i>et al.</i>, “Directional optical switching and transistor
    functionality using optical parametric oscillation in a spinor polariton fluid,”
    <i>Optics Express</i>, vol. 25, no. 25, Art. no. 31056, 2017, doi: <a href="https://doi.org/10.1364/oe.25.031056">10.1364/oe.25.031056</a>.'
  mla: Lewandowski, Przemyslaw, et al. “Directional Optical Switching and Transistor
    Functionality Using Optical Parametric Oscillation in a Spinor Polariton Fluid.”
    <i>Optics Express</i>, vol. 25, no. 25, 31056, 2017, doi:<a href="https://doi.org/10.1364/oe.25.031056">10.1364/oe.25.031056</a>.
  short: P. Lewandowski, S.M.H. Luk, C.K.P. Chan, P.T. Leung, N.H. Kwong, R. Binder,
    S. Schumacher, Optics Express 25 (2017).
date_created: 2019-09-19T13:58:49Z
date_updated: 2025-12-05T10:03:13Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '35'
- _id: '230'
- _id: '27'
doi: 10.1364/oe.25.031056
intvolume: '        25'
issue: '25'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Optics Express
publication_identifier:
  issn:
  - 1094-4087
publication_status: published
status: public
title: Directional optical switching and transistor functionality using optical parametric
  oscillation in a spinor polariton fluid
type: journal_article
user_id: '16199'
volume: 25
year: '2017'
...
---
_id: '13354'
author:
- first_name: S. M. H.
  full_name: Luk, S. M. H.
  last_name: Luk
- first_name: N. H.
  full_name: Kwong, N. H.
  last_name: Kwong
- first_name: P.
  full_name: Lewandowski, P.
  last_name: Lewandowski
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: R.
  full_name: Binder, R.
  last_name: Binder
citation:
  ama: Luk SMH, Kwong NH, Lewandowski P, Schumacher S, Binder R. Optically Controlled
    Orbital Angular Momentum Generation in a Polaritonic Quantum Fluid. <i>Physical
    Review Letters</i>. 2017;119(11). doi:<a href="https://doi.org/10.1103/physrevlett.119.113903">10.1103/physrevlett.119.113903</a>
  apa: Luk, S. M. H., Kwong, N. H., Lewandowski, P., Schumacher, S., &#38; Binder,
    R. (2017). Optically Controlled Orbital Angular Momentum Generation in a Polaritonic
    Quantum Fluid. <i>Physical Review Letters</i>, <i>119</i>(11). <a href="https://doi.org/10.1103/physrevlett.119.113903">https://doi.org/10.1103/physrevlett.119.113903</a>
  bibtex: '@article{Luk_Kwong_Lewandowski_Schumacher_Binder_2017, title={Optically
    Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum Fluid},
    volume={119}, DOI={<a href="https://doi.org/10.1103/physrevlett.119.113903">10.1103/physrevlett.119.113903</a>},
    number={11}, journal={Physical Review Letters}, author={Luk, S. M. H. and Kwong,
    N. H. and Lewandowski, P. and Schumacher, Stefan and Binder, R.}, year={2017}
    }'
  chicago: Luk, S. M. H., N. H. Kwong, P. Lewandowski, Stefan Schumacher, and R. Binder.
    “Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum
    Fluid.” <i>Physical Review Letters</i> 119, no. 11 (2017). <a href="https://doi.org/10.1103/physrevlett.119.113903">https://doi.org/10.1103/physrevlett.119.113903</a>.
  ieee: 'S. M. H. Luk, N. H. Kwong, P. Lewandowski, S. Schumacher, and R. Binder,
    “Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum
    Fluid,” <i>Physical Review Letters</i>, vol. 119, no. 11, 2017, doi: <a href="https://doi.org/10.1103/physrevlett.119.113903">10.1103/physrevlett.119.113903</a>.'
  mla: Luk, S. M. H., et al. “Optically Controlled Orbital Angular Momentum Generation
    in a Polaritonic Quantum Fluid.” <i>Physical Review Letters</i>, vol. 119, no.
    11, 2017, doi:<a href="https://doi.org/10.1103/physrevlett.119.113903">10.1103/physrevlett.119.113903</a>.
  short: S.M.H. Luk, N.H. Kwong, P. Lewandowski, S. Schumacher, R. Binder, Physical
    Review Letters 119 (2017).
date_created: 2019-09-19T13:59:49Z
date_updated: 2025-12-05T10:02:42Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '35'
- _id: '230'
- _id: '27'
doi: 10.1103/physrevlett.119.113903
intvolume: '       119'
issue: '11'
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Physical Review Letters
publication_identifier:
  issn:
  - 0031-9007
  - 1079-7114
publication_status: published
status: public
title: Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum
  Fluid
type: journal_article
user_id: '16199'
volume: 119
year: '2017'
...
---
_id: '13364'
article_number: '034006'
author:
- first_name: N H
  full_name: Kwong, N H
  last_name: Kwong
- first_name: C Y
  full_name: Tsang, C Y
  last_name: Tsang
- first_name: Samuel M H
  full_name: Luk, Samuel M H
  last_name: Luk
- first_name: Y C
  full_name: Tse, Y C
  last_name: Tse
- first_name: Chris K P
  full_name: Chan, Chris K P
  last_name: Chan
- first_name: P
  full_name: Lewandowski, P
  last_name: Lewandowski
- first_name: P T
  full_name: Leung, P T
  last_name: Leung
- first_name: Stefan
  full_name: Schumacher, Stefan
  id: '27271'
  last_name: Schumacher
  orcid: 0000-0003-4042-4951
- first_name: R
  full_name: Binder, R
  last_name: Binder
citation:
  ama: Kwong NH, Tsang CY, Luk SMH, et al. Optical switching of polariton density
    patterns in a semiconductor microcavity. <i>Physica Scripta</i>. Published online
    2017. doi:<a href="https://doi.org/10.1088/1402-4896/aa58f6">10.1088/1402-4896/aa58f6</a>
  apa: Kwong, N. H., Tsang, C. Y., Luk, S. M. H., Tse, Y. C., Chan, C. K. P., Lewandowski,
    P., Leung, P. T., Schumacher, S., &#38; Binder, R. (2017). Optical switching of
    polariton density patterns in a semiconductor microcavity. <i>Physica Scripta</i>,
    Article 034006. <a href="https://doi.org/10.1088/1402-4896/aa58f6">https://doi.org/10.1088/1402-4896/aa58f6</a>
  bibtex: '@article{Kwong_Tsang_Luk_Tse_Chan_Lewandowski_Leung_Schumacher_Binder_2017,
    title={Optical switching of polariton density patterns in a semiconductor microcavity},
    DOI={<a href="https://doi.org/10.1088/1402-4896/aa58f6">10.1088/1402-4896/aa58f6</a>},
    number={034006}, journal={Physica Scripta}, author={Kwong, N H and Tsang, C Y
    and Luk, Samuel M H and Tse, Y C and Chan, Chris K P and Lewandowski, P and Leung,
    P T and Schumacher, Stefan and Binder, R}, year={2017} }'
  chicago: Kwong, N H, C Y Tsang, Samuel M H Luk, Y C Tse, Chris K P Chan, P Lewandowski,
    P T Leung, Stefan Schumacher, and R Binder. “Optical Switching of Polariton Density
    Patterns in a Semiconductor Microcavity.” <i>Physica Scripta</i>, 2017. <a href="https://doi.org/10.1088/1402-4896/aa58f6">https://doi.org/10.1088/1402-4896/aa58f6</a>.
  ieee: 'N. H. Kwong <i>et al.</i>, “Optical switching of polariton density patterns
    in a semiconductor microcavity,” <i>Physica Scripta</i>, Art. no. 034006, 2017,
    doi: <a href="https://doi.org/10.1088/1402-4896/aa58f6">10.1088/1402-4896/aa58f6</a>.'
  mla: Kwong, N. H., et al. “Optical Switching of Polariton Density Patterns in a
    Semiconductor Microcavity.” <i>Physica Scripta</i>, 034006, 2017, doi:<a href="https://doi.org/10.1088/1402-4896/aa58f6">10.1088/1402-4896/aa58f6</a>.
  short: N.H. Kwong, C.Y. Tsang, S.M.H. Luk, Y.C. Tse, C.K.P. Chan, P. Lewandowski,
    P.T. Leung, S. Schumacher, R. Binder, Physica Scripta (2017).
date_created: 2019-09-19T14:29:54Z
date_updated: 2025-12-05T10:01:39Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '35'
- _id: '27'
doi: 10.1088/1402-4896/aa58f6
language:
- iso: eng
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Physica Scripta
publication_identifier:
  issn:
  - 0031-8949
  - 1402-4896
publication_status: published
status: public
title: Optical switching of polariton density patterns in a semiconductor microcavity
type: journal_article
user_id: '16199'
year: '2017'
...
