---
_id: '61253'
abstract:
- lang: eng
text: "In the SUPER scheme (Swing-UP of the quantum EmitteR population),
excitation of a quantum emitter is achieved with two off-resonant, red-detuned
laser pulses. This allows the generation of high-quality single photons without
the need of complex laser stray light suppression or careful spectral filtering.
In the present work, we extend this promising method to quantum emitters, specifically
semiconductor quantum dots, inside a resonant optical cavity. A significant advantage
of the SUPER scheme is identified in that it eliminates re-excitation of the quantum
emitter by suppressing photon emission during the excitation cycle. This, in turn,
leads to almost ideal single-photon purity, overcoming a major factor typically
limiting the quality of photons generated with quantum emitters in high-quality
cavities. We further find that for cavity-mediated biexciton emission of degenerate
photon pairs, the SUPER scheme leads to near-perfect biexciton initialization
with very high values of polarization entanglement of emitted photon pairs.\r\n
\ \r\n \r\n \r\n
\ \r\n Published
by the American Physical Society\r\n 2024\r\n
\ \r\n \r\n
\ "
article_number: L012017
author:
- first_name: Nils
full_name: Heinisch, Nils
id: '90283'
last_name: Heinisch
orcid: 0009-0006-0984-2097
- first_name: Nikolas
full_name: Köcher, Nikolas
id: '79191'
last_name: Köcher
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: 'Heinisch N, Köcher N, Bauch D, Schumacher S. Swing-up dynamics in quantum
emitter cavity systems: Near ideal single photons and entangled photon pairs.
Physical Review Research. 2024;6(1). doi:10.1103/physrevresearch.6.l012017'
apa: 'Heinisch, N., Köcher, N., Bauch, D., & Schumacher, S. (2024). Swing-up
dynamics in quantum emitter cavity systems: Near ideal single photons and entangled
photon pairs. Physical Review Research, 6(1), Article L012017. https://doi.org/10.1103/physrevresearch.6.l012017'
bibtex: '@article{Heinisch_Köcher_Bauch_Schumacher_2024, title={Swing-up dynamics
in quantum emitter cavity systems: Near ideal single photons and entangled photon
pairs}, volume={6}, DOI={10.1103/physrevresearch.6.l012017},
number={1L012017}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Heinisch, Nils and Köcher, Nikolas and Bauch, David and
Schumacher, Stefan}, year={2024} }'
chicago: 'Heinisch, Nils, Nikolas Köcher, David Bauch, and Stefan Schumacher. “Swing-up
Dynamics in Quantum Emitter Cavity Systems: Near Ideal Single Photons and Entangled
Photon Pairs.” Physical Review Research 6, no. 1 (2024). https://doi.org/10.1103/physrevresearch.6.l012017.'
ieee: 'N. Heinisch, N. Köcher, D. Bauch, and S. Schumacher, “Swing-up dynamics in
quantum emitter cavity systems: Near ideal single photons and entangled photon
pairs,” Physical Review Research, vol. 6, no. 1, Art. no. L012017, 2024,
doi: 10.1103/physrevresearch.6.l012017.'
mla: 'Heinisch, Nils, et al. “Swing-up Dynamics in Quantum Emitter Cavity Systems:
Near Ideal Single Photons and Entangled Photon Pairs.” Physical Review Research,
vol. 6, no. 1, L012017, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.l012017.'
short: N. Heinisch, N. Köcher, D. Bauch, S. Schumacher, Physical Review Research
6 (2024).
date_created: 2025-09-12T11:16:31Z
date_updated: 2025-09-12T11:18:05Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '35'
- _id: '230'
- _id: '429'
- _id: '27'
doi: 10.1103/physrevresearch.6.l012017
intvolume: ' 6'
issue: '1'
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '56'
name: TRR 142 - Project Area C
- _id: '173'
name: 'TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch
bei Telekom Wellenlängen'
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons
and entangled photon pairs'
type: journal_article
user_id: '16199'
volume: 6
year: '2024'
...
---
_id: '61255'
abstract:
- lang: eng
text: "Abstract\r\n Topological states
have been widely investigated in different types of systems and lattices. In the
present work, we report on topological edge states in double-wave (DW) chains,
which can be described by a generalized Aubry-André-Harper (AAH) model. For the
specific system of a driven-dissipative exciton polariton system we show that
in such potential chains, different types of edge states can form. For resonant
optical excitation, we further find that the optical nonlinearity leads to a multistability
of different edge states. This includes topologically protected edge states evolved
directly from individual linear eigenstates as well as additional edge states
that originate from nonlinearity-induced localization of bulk states. Extending
the system into two dimensions (2D) by stacking horizontal DW chains in the vertical
direction, we also create 2D multi-wave lattices. In such 2D lattices multiple
Su–Schrieffer–Heeger (SSH) chains appear along the vertical direction. The combination
of DW chains in the horizonal and SSH chains in the vertical direction then results
in the formation of higher-order topological insulator corner states. Multistable
corner states emerge in the nonlinear regime."
author:
- first_name: Tobias
full_name: Schneider, Tobias
last_name: Schneider
- first_name: Wenlong
full_name: Gao, Wenlong
id: '78853'
last_name: Gao
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- 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: Schneider T, Gao W, Zentgraf T, Schumacher S, Ma X. Topological edge and corner
states in coupled wave lattices in nonlinear polariton condensates. Nanophotonics.
2024;13(4):509-518. doi:10.1515/nanoph-2023-0556
apa: Schneider, T., Gao, W., Zentgraf, T., Schumacher, S., & Ma, X. (2024).
Topological edge and corner states in coupled wave lattices in nonlinear polariton
condensates. Nanophotonics, 13(4), 509–518. https://doi.org/10.1515/nanoph-2023-0556
bibtex: '@article{Schneider_Gao_Zentgraf_Schumacher_Ma_2024, title={Topological
edge and corner states in coupled wave lattices in nonlinear polariton condensates},
volume={13}, DOI={10.1515/nanoph-2023-0556},
number={4}, journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Schneider,
Tobias and Gao, Wenlong and Zentgraf, Thomas and Schumacher, Stefan and Ma, Xuekai},
year={2024}, pages={509–518} }'
chicago: 'Schneider, Tobias, Wenlong Gao, Thomas Zentgraf, Stefan Schumacher, and
Xuekai Ma. “Topological Edge and Corner States in Coupled Wave Lattices in Nonlinear
Polariton Condensates.” Nanophotonics 13, no. 4 (2024): 509–18. https://doi.org/10.1515/nanoph-2023-0556.'
ieee: 'T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, and X. Ma, “Topological
edge and corner states in coupled wave lattices in nonlinear polariton condensates,”
Nanophotonics, vol. 13, no. 4, pp. 509–518, 2024, doi: 10.1515/nanoph-2023-0556.'
mla: Schneider, Tobias, et al. “Topological Edge and Corner States in Coupled Wave
Lattices in Nonlinear Polariton Condensates.” Nanophotonics, vol. 13, no.
4, Walter de Gruyter GmbH, 2024, pp. 509–18, doi:10.1515/nanoph-2023-0556.
short: T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, X. Ma, Nanophotonics 13
(2024) 509–518.
date_created: 2025-09-12T11:19:22Z
date_updated: 2025-09-12T11:22:41Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '35'
- _id: '230'
- _id: '429'
- _id: '27'
doi: 10.1515/nanoph-2023-0556
intvolume: ' 13'
issue: '4'
language:
- iso: eng
page: 509-518
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '54'
name: TRR 142 - Project Area A
- _id: '55'
name: TRR 142 - Project Area B
- _id: '61'
name: 'TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit
Polaritonen in Mikrokavitäten'
- _id: '170'
name: 'TRR 142; TP B09: Effiziente Erzeugung mit maßgeschneiderter optischer Phaselage
der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen'
publication: Nanophotonics
publication_identifier:
issn:
- 2192-8614
publication_status: published
publisher: Walter de Gruyter GmbH
status: public
title: Topological edge and corner states in coupled wave lattices in nonlinear polariton
condensates
type: journal_article
user_id: '16199'
volume: 13
year: '2024'
...
---
_id: '61257'
abstract:
- lang: eng
text: "Exceptional points (EPs), with their intriguing spectral topology,
have attracted considerable attention in a broad range of physical systems, with
potential sensing applications driving much of the present research in this field.
Here, we investigate spectral topology and EPs in systems with significant nonlinearity,
exemplified by a nonequilibrium exciton-polariton condensate. With the possibility
to control loss and gain and nonlinearity by optical means, this system allows
for a comprehensive analysis of the interplay of nonlinearities (Kerr type and
saturable gain) and non-Hermiticity. Not only do we find that EPs can be intentionally
shifted in parameter space by the saturable gain, but we also observe intriguing
rotations and intersections of Riemann surfaces and find nonlinearity-enhanced
sensing capabilities. With this, our results illustrate the potential of tailoring
spectral topology and related phenomena in non-Hermitian systems by nonlinearity.\r\n
\ \r\n \r\n \r\n
\ \r\n Published
by the American Physical Society\r\n 2024\r\n
\ \r\n \r\n
\ "
article_number: '013148'
author:
- first_name: Jan
full_name: Wingenbach, Jan
id: '69187'
last_name: Wingenbach
- 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: Wingenbach J, Schumacher S, Ma X. Manipulating spectral topology and exceptional
points by nonlinearity in non-Hermitian polariton systems. Physical Review
Research. 2024;6(1). doi:10.1103/physrevresearch.6.013148
apa: Wingenbach, J., Schumacher, S., & Ma, X. (2024). Manipulating spectral
topology and exceptional points by nonlinearity in non-Hermitian polariton systems.
Physical Review Research, 6(1), Article 013148. https://doi.org/10.1103/physrevresearch.6.013148
bibtex: '@article{Wingenbach_Schumacher_Ma_2024, title={Manipulating spectral topology
and exceptional points by nonlinearity in non-Hermitian polariton systems}, volume={6},
DOI={10.1103/physrevresearch.6.013148},
number={1013148}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Wingenbach, Jan and Schumacher, Stefan and Ma, Xuekai},
year={2024} }'
chicago: Wingenbach, Jan, Stefan Schumacher, and Xuekai Ma. “Manipulating Spectral
Topology and Exceptional Points by Nonlinearity in Non-Hermitian Polariton Systems.”
Physical Review Research 6, no. 1 (2024). https://doi.org/10.1103/physrevresearch.6.013148.
ieee: 'J. Wingenbach, S. Schumacher, and X. Ma, “Manipulating spectral topology
and exceptional points by nonlinearity in non-Hermitian polariton systems,” Physical
Review Research, vol. 6, no. 1, Art. no. 013148, 2024, doi: 10.1103/physrevresearch.6.013148.'
mla: Wingenbach, Jan, et al. “Manipulating Spectral Topology and Exceptional Points
by Nonlinearity in Non-Hermitian Polariton Systems.” Physical Review Research,
vol. 6, no. 1, 013148, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.013148.
short: J. Wingenbach, S. Schumacher, X. Ma, Physical Review Research 6 (2024).
date_created: 2025-09-12T11:23:33Z
date_updated: 2025-09-12T11:24:59Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '35'
- _id: '230'
- _id: '27'
- _id: '429'
doi: 10.1103/physrevresearch.6.013148
intvolume: ' 6'
issue: '1'
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '54'
name: TRR 142 - Project Area A
- _id: '61'
name: 'TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit
Polaritonen in Mikrokavitäten'
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian
polariton systems
type: journal_article
user_id: '16199'
volume: 6
year: '2024'
...
---
_id: '61259'
author:
- first_name: Fabian
full_name: Bauch, Fabian
last_name: Bauch
- first_name: Chuan-Ding
full_name: Dong, Chuan-Ding
last_name: Dong
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch F, Dong C-D, Schumacher S. Dynamics of Electron–Hole Coulomb Attractive
Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers. The Journal
of Physical Chemistry C. 2024;128(8):3525-3532. doi:10.1021/acs.jpcc.3c07513
apa: Bauch, F., Dong, C.-D., & Schumacher, S. (2024). Dynamics of Electron–Hole
Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor
Polymers. The Journal of Physical Chemistry C, 128(8), 3525–3532.
https://doi.org/10.1021/acs.jpcc.3c07513
bibtex: '@article{Bauch_Dong_Schumacher_2024, title={Dynamics of Electron–Hole Coulomb
Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers},
volume={128}, DOI={10.1021/acs.jpcc.3c07513},
number={8}, journal={The Journal of Physical Chemistry C}, publisher={American
Chemical Society (ACS)}, author={Bauch, Fabian and Dong, Chuan-Ding and Schumacher,
Stefan}, year={2024}, pages={3525–3532} }'
chicago: 'Bauch, Fabian, Chuan-Ding Dong, and Stefan Schumacher. “Dynamics of Electron–Hole
Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor
Polymers.” The Journal of Physical Chemistry C 128, no. 8 (2024): 3525–32.
https://doi.org/10.1021/acs.jpcc.3c07513.'
ieee: 'F. Bauch, C.-D. Dong, and S. Schumacher, “Dynamics of Electron–Hole Coulomb
Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers,”
The Journal of Physical Chemistry C, vol. 128, no. 8, pp. 3525–3532, 2024,
doi: 10.1021/acs.jpcc.3c07513.'
mla: Bauch, Fabian, et al. “Dynamics of Electron–Hole Coulomb Attractive Energy
and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers.” The Journal
of Physical Chemistry C, vol. 128, no. 8, American Chemical Society (ACS),
2024, pp. 3525–32, doi:10.1021/acs.jpcc.3c07513.
short: F. Bauch, C.-D. Dong, S. Schumacher, The Journal of Physical Chemistry C
128 (2024) 3525–3532.
date_created: 2025-09-12T11:26:49Z
date_updated: 2025-09-12T11:27:57Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '35'
- _id: '230'
- _id: '27'
doi: 10.1021/acs.jpcc.3c07513
intvolume: ' 128'
issue: '8'
language:
- iso: eng
page: 3525-3532
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
publisher: American Chemical Society (ACS)
status: public
title: Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot
Excitons in Donor–Acceptor Polymers
type: journal_article
user_id: '16199'
volume: 128
year: '2024'
...
---
_id: '61263'
abstract:
- lang: eng
text: Charge transfer mechanism in the deprotonation-induced n-type doping
of PCBM.
author:
- first_name: Chuan-Ding
full_name: Dong, Chuan-Ding
last_name: Dong
- first_name: Fabian
full_name: Bauch, Fabian
id: '61389'
last_name: Bauch
orcid: 0009-0008-6279-077X
- first_name: Yuanyuan
full_name: Hu, Yuanyuan
last_name: Hu
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Dong C-D, Bauch F, Hu Y, Schumacher S. Charge transfer in superbase n-type
doping of PCBM induced by deprotonation. Physical Chemistry Chemical Physics.
2024;26(5):4194-4199. doi:10.1039/d3cp05105f
apa: Dong, C.-D., Bauch, F., Hu, Y., & Schumacher, S. (2024). Charge transfer
in superbase n-type doping of PCBM induced by deprotonation. Physical Chemistry
Chemical Physics, 26(5), 4194–4199. https://doi.org/10.1039/d3cp05105f
bibtex: '@article{Dong_Bauch_Hu_Schumacher_2024, title={Charge transfer in superbase
n-type doping of PCBM induced by deprotonation}, volume={26}, DOI={10.1039/d3cp05105f},
number={5}, journal={Physical Chemistry Chemical Physics}, publisher={Royal Society
of Chemistry (RSC)}, author={Dong, Chuan-Ding and Bauch, Fabian and Hu, Yuanyuan
and Schumacher, Stefan}, year={2024}, pages={4194–4199} }'
chicago: 'Dong, Chuan-Ding, Fabian Bauch, Yuanyuan Hu, and Stefan Schumacher. “Charge
Transfer in Superbase N-Type Doping of PCBM Induced by Deprotonation.” Physical
Chemistry Chemical Physics 26, no. 5 (2024): 4194–99. https://doi.org/10.1039/d3cp05105f.'
ieee: 'C.-D. Dong, F. Bauch, Y. Hu, and S. Schumacher, “Charge transfer in superbase
n-type doping of PCBM induced by deprotonation,” Physical Chemistry Chemical
Physics, vol. 26, no. 5, pp. 4194–4199, 2024, doi: 10.1039/d3cp05105f.'
mla: Dong, Chuan-Ding, et al. “Charge Transfer in Superbase N-Type Doping of PCBM
Induced by Deprotonation.” Physical Chemistry Chemical Physics, vol. 26,
no. 5, Royal Society of Chemistry (RSC), 2024, pp. 4194–99, doi:10.1039/d3cp05105f.
short: C.-D. Dong, F. Bauch, Y. Hu, S. Schumacher, Physical Chemistry Chemical Physics
26 (2024) 4194–4199.
date_created: 2025-09-12T11:29:33Z
date_updated: 2025-09-12T11:30:40Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '230'
- _id: '27'
doi: 10.1039/d3cp05105f
intvolume: ' 26'
issue: '5'
language:
- iso: eng
page: 4194-4199
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Physical Chemistry Chemical Physics
publication_identifier:
issn:
- 1463-9076
- 1463-9084
publication_status: published
publisher: Royal Society of Chemistry (RSC)
status: public
title: Charge transfer in superbase n-type doping of PCBM induced by deprotonation
type: journal_article
user_id: '16199'
volume: 26
year: '2024'
...
---
_id: '61357'
author:
- first_name: Marvin
full_name: Krenz, Marvin
last_name: Krenz
- first_name: Simone
full_name: Sanna, Simone
last_name: Sanna
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Krenz M, Sanna S, Gerstmann U, Schmidt WG. Understanding and Improving Triplet
Exciton Transfer in Sensitized Silicon Solar Cells. The Journal of Physical
Chemistry C. 2024;128(41):17774-17778. doi:10.1021/acs.jpcc.4c05446
apa: Krenz, M., Sanna, S., Gerstmann, U., & Schmidt, W. G. (2024). Understanding
and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells. The
Journal of Physical Chemistry C, 128(41), 17774–17778. https://doi.org/10.1021/acs.jpcc.4c05446
bibtex: '@article{Krenz_Sanna_Gerstmann_Schmidt_2024, title={Understanding and Improving
Triplet Exciton Transfer in Sensitized Silicon Solar Cells}, volume={128}, DOI={10.1021/acs.jpcc.4c05446},
number={41}, journal={The Journal of Physical Chemistry C}, publisher={American
Chemical Society (ACS)}, author={Krenz, Marvin and Sanna, Simone and Gerstmann,
Uwe and Schmidt, Wolf Gero}, year={2024}, pages={17774–17778} }'
chicago: 'Krenz, Marvin, Simone Sanna, Uwe Gerstmann, and Wolf Gero Schmidt. “Understanding
and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells.” The
Journal of Physical Chemistry C 128, no. 41 (2024): 17774–78. https://doi.org/10.1021/acs.jpcc.4c05446.'
ieee: 'M. Krenz, S. Sanna, U. Gerstmann, and W. G. Schmidt, “Understanding and Improving
Triplet Exciton Transfer in Sensitized Silicon Solar Cells,” The Journal of
Physical Chemistry C, vol. 128, no. 41, pp. 17774–17778, 2024, doi: 10.1021/acs.jpcc.4c05446.'
mla: Krenz, Marvin, et al. “Understanding and Improving Triplet Exciton Transfer
in Sensitized Silicon Solar Cells.” The Journal of Physical Chemistry C,
vol. 128, no. 41, American Chemical Society (ACS), 2024, pp. 17774–78, doi:10.1021/acs.jpcc.4c05446.
short: M. Krenz, S. Sanna, U. Gerstmann, W.G. Schmidt, The Journal of Physical Chemistry
C 128 (2024) 17774–17778.
date_created: 2025-09-18T11:32:33Z
date_updated: 2025-09-18T11:34:21Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '790'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '27'
doi: 10.1021/acs.jpcc.4c05446
intvolume: ' 128'
issue: '41'
language:
- iso: eng
page: 17774-17778
project:
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '54'
name: TRR 142 - Project Area A
- _id: '55'
name: TRR 142 - Project Area B
- _id: '166'
name: TRR 142 - Subproject A11
- _id: '168'
name: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat
(B07*)
- _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
publisher: American Chemical Society (ACS)
status: public
title: Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon
Solar Cells
type: journal_article
user_id: '16199'
volume: 128
year: '2024'
...
---
_id: '62067'
abstract:
- lang: eng
text: Most FPGA boards in the HPC domain are well-suited for parallel scaling because
of the direct integration of versatile and high-throughput network ports. However,
the utilization of their network capabilities is often challenging and error-prone
because the whole network stack and communication patterns have to be implemented
and managed on the FPGAs. Also, this approach conceptually involves a trade-off
between the performance potential of improved communication and the impact of
resource consumption for communication infrastructure, since the utilized resources
on the FPGAs could otherwise be used for computations. In this work, we investigate
this trade-off, firstly, by using synthetic benchmarks to evaluate the different
configuration options of the communication framework ACCL and their impact on
communication latency and throughput. Finally, we use our findings to implement
a shallow water simulation whose scalability heavily depends on low-latency communication.
With a suitable configuration of ACCL, good scaling behavior can be shown to all
48 FPGAs installed in the system. Overall, the results show that the availability
of inter-FPGA communication frameworks as well as the configurability of framework and
network stack are crucial to achieve the best application performance with low
latency communication.
author:
- first_name: Marius
full_name: Meyer, Marius
id: '40778'
last_name: Meyer
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
- first_name: Lucian
full_name: Petrica, Lucian
last_name: Petrica
- first_name: Kenneth
full_name: O’Brien, Kenneth
last_name: O’Brien
- first_name: Michaela
full_name: Blott, Michaela
last_name: Blott
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
citation:
ama: 'Meyer M, Kenter T, Petrica L, O’Brien K, Blott M, Plessl C. Optimizing Communication
for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL. In: Lecture
Notes in Computer Science. Springer Nature Switzerland; 2024. doi:10.1007/978-3-031-69766-1_9'
apa: Meyer, M., Kenter, T., Petrica, L., O’Brien, K., Blott, M., & Plessl, C.
(2024). Optimizing Communication for Latency Sensitive HPC Applications on up
to 48 FPGAs Using ACCL. In Lecture Notes in Computer Science. Springer
Nature Switzerland. https://doi.org/10.1007/978-3-031-69766-1_9
bibtex: '@inbook{Meyer_Kenter_Petrica_O’Brien_Blott_Plessl_2024, place={Cham}, title={Optimizing
Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL},
DOI={10.1007/978-3-031-69766-1_9},
booktitle={Lecture Notes in Computer Science}, publisher={Springer Nature Switzerland},
author={Meyer, Marius and Kenter, Tobias and Petrica, Lucian and O’Brien, Kenneth
and Blott, Michaela and Plessl, Christian}, year={2024} }'
chicago: 'Meyer, Marius, Tobias Kenter, Lucian Petrica, Kenneth O’Brien, Michaela
Blott, and Christian Plessl. “Optimizing Communication for Latency Sensitive HPC
Applications on up to 48 FPGAs Using ACCL.” In Lecture Notes in Computer Science.
Cham: Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-69766-1_9.'
ieee: 'M. Meyer, T. Kenter, L. Petrica, K. O’Brien, M. Blott, and C. Plessl, “Optimizing
Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL,”
in Lecture Notes in Computer Science, Cham: Springer Nature Switzerland,
2024.'
mla: Meyer, Marius, et al. “Optimizing Communication for Latency Sensitive HPC Applications
on up to 48 FPGAs Using ACCL.” Lecture Notes in Computer Science, Springer
Nature Switzerland, 2024, doi:10.1007/978-3-031-69766-1_9.
short: 'M. Meyer, T. Kenter, L. Petrica, K. O’Brien, M. Blott, C. Plessl, in: Lecture
Notes in Computer Science, Springer Nature Switzerland, Cham, 2024.'
date_created: 2025-11-04T09:50:24Z
date_updated: 2025-11-04T09:51:22Z
department:
- _id: '27'
- _id: '518'
doi: 10.1007/978-3-031-69766-1_9
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
place: Cham
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Lecture Notes in Computer Science
publication_identifier:
isbn:
- '9783031697654'
- '9783031697661'
issn:
- 0302-9743
- 1611-3349
publication_status: published
publisher: Springer Nature Switzerland
quality_controlled: '1'
status: public
title: Optimizing Communication for Latency Sensitive HPC Applications on up to 48
FPGAs Using ACCL
type: book_chapter
user_id: '3145'
year: '2024'
...
---
_id: '56604'
abstract:
- lang: eng
text: This manuscript makes the claim of having computed the 9th Dedekind number,
D(9). This was done by accelerating the core operation of the process with an
efficient FPGA design that outperforms an optimized 64-core CPU reference by 95x.
The FPGA execution was parallelized on the Noctua 2 supercomputer at Paderborn
University. The resulting value for D(9) is 286386577668298411128469151667598498812366.
This value can be verified in two steps. We have made the data file containing
the 490 M results available, each of which can be verified separately on CPU,
and the whole file sums to our proposed value. The paper explains the mathematical
approach in the first part, before putting the focus on a deep dive into the FPGA
accelerator implementation followed by a performance analysis. The FPGA implementation
was done in Register-Transfer Level using a dual-clock architecture and shows
how we achieved an impressive FMax of 450 MHz on the targeted Stratix 10 GX 2,800
FPGAs. The total compute time used was 47,000 FPGA hours.
author:
- first_name: Lennart
full_name: Van Hirtum, Lennart
id: '100210'
last_name: Van Hirtum
- first_name: Patrick
full_name: De Causmaecker, Patrick
last_name: De Causmaecker
- first_name: Jens
full_name: Goemaere, Jens
last_name: Goemaere
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
- first_name: Heinrich
full_name: Riebler, Heinrich
id: '8961'
last_name: Riebler
- first_name: Michael
full_name: Lass, Michael
id: '24135'
last_name: Lass
orcid: 0000-0002-5708-7632
- first_name: Christian
full_name: Plessl, Christian
id: '16153'
last_name: Plessl
orcid: 0000-0001-5728-9982
citation:
ama: Van Hirtum L, De Causmaecker P, Goemaere J, et al. A Computation of the Ninth
Dedekind Number Using FPGA Supercomputing. ACM Transactions on Reconfigurable
Technology and Systems. 2024;17(3):1-28. doi:10.1145/3674147
apa: Van Hirtum, L., De Causmaecker, P., Goemaere, J., Kenter, T., Riebler, H.,
Lass, M., & Plessl, C. (2024). A Computation of the Ninth Dedekind Number
Using FPGA Supercomputing. ACM Transactions on Reconfigurable Technology and
Systems, 17(3), 1–28. https://doi.org/10.1145/3674147
bibtex: '@article{Van Hirtum_De Causmaecker_Goemaere_Kenter_Riebler_Lass_Plessl_2024,
title={A Computation of the Ninth Dedekind Number Using FPGA Supercomputing},
volume={17}, DOI={10.1145/3674147},
number={3}, journal={ACM Transactions on Reconfigurable Technology and Systems},
publisher={Association for Computing Machinery (ACM)}, author={Van Hirtum, Lennart
and De Causmaecker, Patrick and Goemaere, Jens and Kenter, Tobias and Riebler,
Heinrich and Lass, Michael and Plessl, Christian}, year={2024}, pages={1–28} }'
chicago: 'Van Hirtum, Lennart, Patrick De Causmaecker, Jens Goemaere, Tobias Kenter,
Heinrich Riebler, Michael Lass, and Christian Plessl. “A Computation of the Ninth
Dedekind Number Using FPGA Supercomputing.” ACM Transactions on Reconfigurable
Technology and Systems 17, no. 3 (2024): 1–28. https://doi.org/10.1145/3674147.'
ieee: 'L. Van Hirtum et al., “A Computation of the Ninth Dedekind Number
Using FPGA Supercomputing,” ACM Transactions on Reconfigurable Technology and
Systems, vol. 17, no. 3, pp. 1–28, 2024, doi: 10.1145/3674147.'
mla: Van Hirtum, Lennart, et al. “A Computation of the Ninth Dedekind Number Using
FPGA Supercomputing.” ACM Transactions on Reconfigurable Technology and Systems,
vol. 17, no. 3, Association for Computing Machinery (ACM), 2024, pp. 1–28, doi:10.1145/3674147.
short: L. Van Hirtum, P. De Causmaecker, J. Goemaere, T. Kenter, H. Riebler, M.
Lass, C. Plessl, ACM Transactions on Reconfigurable Technology and Systems 17
(2024) 1–28.
date_created: 2024-10-14T07:38:29Z
date_updated: 2025-11-04T09:53:26Z
department:
- _id: '27'
- _id: '518'
doi: 10.1145/3674147
intvolume: ' 17'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 1-28
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: ACM Transactions on Reconfigurable Technology and Systems
publication_identifier:
issn:
- 1936-7406
- 1936-7414
publication_status: published
publisher: Association for Computing Machinery (ACM)
quality_controlled: '1'
status: public
title: A Computation of the Ninth Dedekind Number Using FPGA Supercomputing
type: journal_article
user_id: '3145'
volume: 17
year: '2024'
...
---
_id: '53503'
author:
- first_name: Kaan
full_name: Olgu, Kaan
last_name: Olgu
- first_name: Tobias
full_name: Kenter, Tobias
id: '3145'
last_name: Kenter
- first_name: Jose
full_name: Nunez-Yanez, Jose
last_name: Nunez-Yanez
- first_name: Simon
full_name: Mcintosh-Smith, Simon
last_name: Mcintosh-Smith
citation:
ama: 'Olgu K, Kenter T, Nunez-Yanez J, Mcintosh-Smith S. Optimisation and Evaluation
of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing Algorithms
to Describing Architectures. In: Proceedings of the 12th International Workshop
on OpenCL and SYCL. ACM; 2024. doi:10.1145/3648115.3648134'
apa: 'Olgu, K., Kenter, T., Nunez-Yanez, J., & Mcintosh-Smith, S. (2024). Optimisation
and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing
Algorithms to Describing Architectures. Proceedings of the 12th International
Workshop on OpenCL and SYCL. https://doi.org/10.1145/3648115.3648134'
bibtex: '@inproceedings{Olgu_Kenter_Nunez-Yanez_Mcintosh-Smith_2024, title={Optimisation
and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing
Algorithms to Describing Architectures}, DOI={10.1145/3648115.3648134},
booktitle={Proceedings of the 12th International Workshop on OpenCL and SYCL},
publisher={ACM}, author={Olgu, Kaan and Kenter, Tobias and Nunez-Yanez, Jose and
Mcintosh-Smith, Simon}, year={2024} }'
chicago: 'Olgu, Kaan, Tobias Kenter, Jose Nunez-Yanez, and Simon Mcintosh-Smith.
“Optimisation and Evaluation of Breadth First Search with OneAPI/SYCL on Intel
FPGAs: From Describing Algorithms to Describing Architectures.” In Proceedings
of the 12th International Workshop on OpenCL and SYCL. ACM, 2024. https://doi.org/10.1145/3648115.3648134.'
ieee: 'K. Olgu, T. Kenter, J. Nunez-Yanez, and S. Mcintosh-Smith, “Optimisation
and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing
Algorithms to Describing Architectures,” 2024, doi: 10.1145/3648115.3648134.'
mla: 'Olgu, Kaan, et al. “Optimisation and Evaluation of Breadth First Search with
OneAPI/SYCL on Intel FPGAs: From Describing Algorithms to Describing Architectures.”
Proceedings of the 12th International Workshop on OpenCL and SYCL, ACM,
2024, doi:10.1145/3648115.3648134.'
short: 'K. Olgu, T. Kenter, J. Nunez-Yanez, S. Mcintosh-Smith, in: Proceedings of
the 12th International Workshop on OpenCL and SYCL, ACM, 2024.'
date_created: 2024-04-15T07:41:21Z
date_updated: 2025-11-04T09:53:59Z
department:
- _id: '27'
- _id: '518'
doi: 10.1145/3648115.3648134
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Proceedings of the 12th International Workshop on OpenCL and SYCL
publication_status: published
publisher: ACM
quality_controlled: '1'
status: public
title: 'Optimisation and Evaluation of Breadth First Search with oneAPI/SYCL on Intel
FPGAs: from Describing Algorithms to Describing Architectures'
type: conference
user_id: '3145'
year: '2024'
...
---
_id: '62916'
author:
- first_name: Hongdan
full_name: Zhang, Hongdan
last_name: Zhang
- first_name: Ruixin
full_name: Zuo, Ruixin
last_name: Zuo
- first_name: Shidong
full_name: Yang, Shidong
last_name: Yang
- first_name: Alexander
full_name: Trautmann, Alexander
last_name: Trautmann
- first_name: Xiaohong
full_name: Song, Xiaohong
last_name: Song
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Weifeng
full_name: Yang, Weifeng
last_name: Yang
citation:
ama: 'Zhang H, Zuo R, Yang S, et al. Analyzing High-Order Harmonic Generation in
Solids Based on Semi-Classical Recollision Models. In: High-Order Harmonic
Generation in Solids. WORLD SCIENTIFIC; 2024. doi:10.1142/9789811279560_0006'
apa: Zhang, H., Zuo, R., Yang, S., Trautmann, A., Song, X., Meier, T., & Yang,
W. (2024). Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical
Recollision Models. In High-Order Harmonic Generation in Solids. WORLD
SCIENTIFIC. https://doi.org/10.1142/9789811279560_0006
bibtex: '@inbook{Zhang_Zuo_Yang_Trautmann_Song_Meier_Yang_2024, title={Analyzing
High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models},
DOI={10.1142/9789811279560_0006},
booktitle={High-Order Harmonic Generation in Solids}, publisher={WORLD SCIENTIFIC},
author={Zhang, Hongdan and Zuo, Ruixin and Yang, Shidong and Trautmann, Alexander
and Song, Xiaohong and Meier, Torsten and Yang, Weifeng}, year={2024} }'
chicago: Zhang, Hongdan, Ruixin Zuo, Shidong Yang, Alexander Trautmann, Xiaohong
Song, Torsten Meier, and Weifeng Yang. “Analyzing High-Order Harmonic Generation
in Solids Based on Semi-Classical Recollision Models.” In High-Order Harmonic
Generation in Solids. WORLD SCIENTIFIC, 2024. https://doi.org/10.1142/9789811279560_0006.
ieee: H. Zhang et al., “Analyzing High-Order Harmonic Generation in Solids
Based on Semi-Classical Recollision Models,” in High-Order Harmonic Generation
in Solids, WORLD SCIENTIFIC, 2024.
mla: Zhang, Hongdan, et al. “Analyzing High-Order Harmonic Generation in Solids
Based on Semi-Classical Recollision Models.” High-Order Harmonic Generation
in Solids, WORLD SCIENTIFIC, 2024, doi:10.1142/9789811279560_0006.
short: 'H. Zhang, R. Zuo, S. Yang, A. Trautmann, X. Song, T. Meier, W. Yang, in:
High-Order Harmonic Generation in Solids, WORLD SCIENTIFIC, 2024.'
date_created: 2025-12-05T09:42:23Z
date_updated: 2025-12-05T09:43:37Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '35'
- _id: '429'
- _id: '27'
doi: 10.1142/9789811279560_0006
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '56'
name: TRR 142 - Project Area C
- _id: '174'
name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen
Systemen: Eine theoretische Analyse'
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: High-Order Harmonic Generation in Solids
publication_identifier:
isbn:
- '9789811279553'
- '9789811279560'
publication_status: published
publisher: WORLD SCIENTIFIC
status: public
title: Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical
Recollision Models
type: book_chapter
user_id: '16199'
year: '2024'
...
---
_id: '62917'
author:
- first_name: Matthias
full_name: Reichelt, Matthias
id: '138'
last_name: Reichelt
- first_name: Ruixin
full_name: Zuo, Ruixin
last_name: Zuo
- first_name: Xiaohong
full_name: Song, Xiaohong
last_name: Song
- first_name: Weifeng
full_name: Yang, Weifeng
last_name: Yang
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: 'Reichelt M, Zuo R, Song X, Yang W, Meier T. High-Order Harmonic Generation
in Semiconductors with Excitonic Effects. In: High-Order Harmonic Generation
in Solids. WORLD SCIENTIFIC; 2024. doi:10.1142/9789811279560_0009'
apa: Reichelt, M., Zuo, R., Song, X., Yang, W., & Meier, T. (2024). High-Order
Harmonic Generation in Semiconductors with Excitonic Effects. In High-Order
Harmonic Generation in Solids. WORLD SCIENTIFIC. https://doi.org/10.1142/9789811279560_0009
bibtex: '@inbook{Reichelt_Zuo_Song_Yang_Meier_2024, title={High-Order Harmonic Generation
in Semiconductors with Excitonic Effects}, DOI={10.1142/9789811279560_0009},
booktitle={High-Order Harmonic Generation in Solids}, publisher={WORLD SCIENTIFIC},
author={Reichelt, Matthias and Zuo, Ruixin and Song, Xiaohong and Yang, Weifeng
and Meier, Torsten}, year={2024} }'
chicago: Reichelt, Matthias, Ruixin Zuo, Xiaohong Song, Weifeng Yang, and Torsten
Meier. “High-Order Harmonic Generation in Semiconductors with Excitonic Effects.”
In High-Order Harmonic Generation in Solids. WORLD SCIENTIFIC, 2024. https://doi.org/10.1142/9789811279560_0009.
ieee: M. Reichelt, R. Zuo, X. Song, W. Yang, and T. Meier, “High-Order Harmonic
Generation in Semiconductors with Excitonic Effects,” in High-Order Harmonic
Generation in Solids, WORLD SCIENTIFIC, 2024.
mla: Reichelt, Matthias, et al. “High-Order Harmonic Generation in Semiconductors
with Excitonic Effects.” High-Order Harmonic Generation in Solids, WORLD
SCIENTIFIC, 2024, doi:10.1142/9789811279560_0009.
short: 'M. Reichelt, R. Zuo, X. Song, W. Yang, T. Meier, in: High-Order Harmonic
Generation in Solids, WORLD SCIENTIFIC, 2024.'
date_created: 2025-12-05T09:44:20Z
date_updated: 2025-12-05T09:45:31Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '35'
- _id: '230'
- _id: '429'
- _id: '27'
doi: 10.1142/9789811279560_0009
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '56'
name: TRR 142 - Project Area C
- _id: '174'
name: 'TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen
Systemen: Eine theoretische Analyse'
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: High-Order Harmonic Generation in Solids
publication_identifier:
isbn:
- '9789811279553'
- '9789811279560'
publication_status: published
publisher: WORLD SCIENTIFIC
status: public
title: High-Order Harmonic Generation in Semiconductors with Excitonic Effects
type: book_chapter
user_id: '16199'
year: '2024'
...
---
_id: '62915'
author:
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Usman
full_name: Ali, Usman
last_name: Ali
- first_name: Martin
full_name: Holthaus, Martin
last_name: Holthaus
citation:
ama: Meier T, Ali U, Holthaus M. Floquet Dynamics of Ultracold Atoms in Optical
Lattices with a Parametrically Modulated Trapping Potential. LibreCat University;
2024. doi:10.5281/ZENODO.11935146
apa: Meier, T., Ali, U., & Holthaus, M. (2024). Floquet dynamics of ultracold
atoms in optical lattices with a parametrically modulated trapping potential.
LibreCat University. https://doi.org/10.5281/ZENODO.11935146
bibtex: '@book{Meier_Ali_Holthaus_2024, title={Floquet dynamics of ultracold atoms
in optical lattices with a parametrically modulated trapping potential}, DOI={10.5281/ZENODO.11935146}, publisher={LibreCat
University}, author={Meier, Torsten and Ali, Usman and Holthaus, Martin}, year={2024}
}'
chicago: Meier, Torsten, Usman Ali, and Martin Holthaus. Floquet Dynamics of
Ultracold Atoms in Optical Lattices with a Parametrically Modulated Trapping Potential.
LibreCat University, 2024. https://doi.org/10.5281/ZENODO.11935146.
ieee: T. Meier, U. Ali, and M. Holthaus, Floquet dynamics of ultracold atoms
in optical lattices with a parametrically modulated trapping potential. LibreCat
University, 2024.
mla: Meier, Torsten, et al. Floquet Dynamics of Ultracold Atoms in Optical Lattices
with a Parametrically Modulated Trapping Potential. LibreCat University, 2024,
doi:10.5281/ZENODO.11935146.
short: T. Meier, U. Ali, M. Holthaus, Floquet Dynamics of Ultracold Atoms in Optical
Lattices with a Parametrically Modulated Trapping Potential, LibreCat University,
2024.
date_created: 2025-12-05T09:41:14Z
date_updated: 2025-12-05T09:42:11Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
- _id: '35'
- _id: '27'
doi: 10.5281/ZENODO.11935146
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publisher: LibreCat University
status: public
title: Floquet dynamics of ultracold atoms in optical lattices with a parametrically
modulated trapping potential
type: research_data
user_id: '16199'
year: '2024'
...
---
_id: '54868'
abstract:
- lang: eng
text: AbstractMost properties of solid materials
are defined by their internal electric field and charge density distributions
which so far are difficult to measure with high spatial resolution. Especially
for 2D materials, the atomic electric fields influence the optoelectronic properties.
In this study, the atomic‐scale electric field and charge density distribution
of WSe2 bi‐ and trilayers are revealed using an emerging
microscopy technique, differential phase contrast (DPC) imaging in scanning transmission
electron microscopy (STEM). For pristine material, a higher positive charge density
located at the selenium atomic columns compared to the tungsten atomic columns
is obtained and tentatively explained by a coherent scattering effect. Furthermore,
the change in the electric field distribution induced by a missing selenium atomic
column is investigated. A characteristic electric field distribution in the vicinity
of the defect with locally reduced magnitudes compared to the pristine lattice
is observed. This effect is accompanied by a considerable inward relaxation of
the surrounding lattice, which according to first principles DFT calculation is
fully compatible with a missing column of Se atoms. This shows that DPC imaging,
as an electric field sensitive technique, provides additional and remarkable information
to the otherwise only structural analysis obtained with conventional STEM imaging.
article_type: original
author:
- first_name: Maja
full_name: Groll, Maja
last_name: Groll
- first_name: Julius
full_name: Bürger, Julius
id: '46952'
last_name: Bürger
- first_name: Ioannis
full_name: Caltzidis, Ioannis
id: '87911'
last_name: Caltzidis
- first_name: Klaus D.
full_name: Jöns, Klaus D.
id: '85353'
last_name: Jöns
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Jörg K. N.
full_name: Lindner, Jörg K. N.
id: '20797'
last_name: Lindner
citation:
ama: Groll M, Bürger J, Caltzidis I, et al. DFT‐Assisted Investigation of the Electric
Field and Charge Density Distribution of Pristine and Defective 2D WSe2
by Differential Phase Contrast Imaging. Small. Published online 2024. doi:10.1002/smll.202311635
apa: Groll, M., Bürger, J., Caltzidis, I., Jöns, K. D., Schmidt, W. G., Gerstmann,
U., & Lindner, J. K. N. (2024). DFT‐Assisted Investigation of the Electric
Field and Charge Density Distribution of Pristine and Defective 2D WSe2
by Differential Phase Contrast Imaging. Small. https://doi.org/10.1002/smll.202311635
bibtex: '@article{Groll_Bürger_Caltzidis_Jöns_Schmidt_Gerstmann_Lindner_2024, title={DFT‐Assisted
Investigation of the Electric Field and Charge Density Distribution of Pristine
and Defective 2D WSe2 by Differential Phase Contrast Imaging}, DOI={10.1002/smll.202311635}, journal={Small},
publisher={Wiley}, author={Groll, Maja and Bürger, Julius and Caltzidis, Ioannis
and Jöns, Klaus D. and Schmidt, Wolf Gero and Gerstmann, Uwe and Lindner, Jörg
K. N.}, year={2024} }'
chicago: Groll, Maja, Julius Bürger, Ioannis Caltzidis, Klaus D. Jöns, Wolf Gero
Schmidt, Uwe Gerstmann, and Jörg K. N. Lindner. “DFT‐Assisted Investigation of
the Electric Field and Charge Density Distribution of Pristine and Defective 2D
WSe2 by Differential Phase Contrast Imaging.” Small, 2024. https://doi.org/10.1002/smll.202311635.
ieee: 'M. Groll et al., “DFT‐Assisted Investigation of the Electric Field
and Charge Density Distribution of Pristine and Defective 2D WSe2 by
Differential Phase Contrast Imaging,” Small, 2024, doi: 10.1002/smll.202311635.'
mla: Groll, Maja, et al. “DFT‐Assisted Investigation of the Electric Field and Charge
Density Distribution of Pristine and Defective 2D WSe2 by Differential
Phase Contrast Imaging.” Small, Wiley, 2024, doi:10.1002/smll.202311635.
short: M. Groll, J. Bürger, I. Caltzidis, K.D. Jöns, W.G. Schmidt, U. Gerstmann,
J.K.N. Lindner, Small (2024).
date_created: 2024-06-24T09:46:25Z
date_updated: 2025-12-05T13:39:01Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '790'
- _id: '642'
- _id: '286'
- _id: '429'
- _id: '230'
- _id: '27'
- _id: '35'
- _id: '169'
doi: 10.1002/smll.202311635
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Small
publication_identifier:
issn:
- 1613-6810
- 1613-6829
publication_status: published
publisher: Wiley
status: public
title: DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution
of Pristine and Defective 2D WSe2 by Differential Phase Contrast Imaging
type: journal_article
user_id: '16199'
year: '2024'
...
---
_id: '54856'
abstract:
- lang: eng
text: "Abstract\r\n Theoretical spectroscopy
based on double perturbation theory is typically challenged by systems with large
orbital hyperfine splitting. Therefore, we here derive a rigorous, non-perturbative
scheme starting from Dirac’s equation which allows to calculate the contribution
of the orbital HFI for complex structures including heavy atoms with strong spin-orbit
coupling (SOC). Using the PAW formalism, the method has been implemented in the
software package Quantum ESPRESSO. We show that the ‘orbital part’ actually scales
with SOC strength if orbital quenching is hindered by low local symmetry, i.e.
in case of dimers or atoms at surfaces. This holds true in particular when the
unpaired electron is localized in quasi-atomic p-like
orbitals. Here, the orbital part is by far not negligible, but becomes dominant
by surpassing the dipolar contribution by a factor of five."
article_number: '012094'
author:
- first_name: Katharina
full_name: Franzke, Katharina
last_name: Franzke
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
citation:
ama: 'Franzke K, Schmidt WG, Gerstmann U. Relativistic calculation of the orbital
hyperfine splitting in complex microscopic structures. Journal of Physics:
Conference Series. 2024;2701(1). doi:10.1088/1742-6596/2701/1/012094'
apa: 'Franzke, K., Schmidt, W. G., & Gerstmann, U. (2024). Relativistic calculation
of the orbital hyperfine splitting in complex microscopic structures. Journal
of Physics: Conference Series, 2701(1), Article 012094. https://doi.org/10.1088/1742-6596/2701/1/012094'
bibtex: '@article{Franzke_Schmidt_Gerstmann_2024, title={Relativistic calculation
of the orbital hyperfine splitting in complex microscopic structures}, volume={2701},
DOI={10.1088/1742-6596/2701/1/012094},
number={1012094}, journal={Journal of Physics: Conference Series}, publisher={IOP
Publishing}, author={Franzke, Katharina and Schmidt, Wolf Gero and Gerstmann,
Uwe}, year={2024} }'
chicago: 'Franzke, Katharina, Wolf Gero Schmidt, and Uwe Gerstmann. “Relativistic
Calculation of the Orbital Hyperfine Splitting in Complex Microscopic Structures.”
Journal of Physics: Conference Series 2701, no. 1 (2024). https://doi.org/10.1088/1742-6596/2701/1/012094.'
ieee: 'K. Franzke, W. G. Schmidt, and U. Gerstmann, “Relativistic calculation of
the orbital hyperfine splitting in complex microscopic structures,” Journal
of Physics: Conference Series, vol. 2701, no. 1, Art. no. 012094, 2024, doi:
10.1088/1742-6596/2701/1/012094.'
mla: 'Franzke, Katharina, et al. “Relativistic Calculation of the Orbital Hyperfine
Splitting in Complex Microscopic Structures.” Journal of Physics: Conference
Series, vol. 2701, no. 1, 012094, IOP Publishing, 2024, doi:10.1088/1742-6596/2701/1/012094.'
short: 'K. Franzke, W.G. Schmidt, U. Gerstmann, Journal of Physics: Conference Series
2701 (2024).'
date_created: 2024-06-24T06:26:02Z
date_updated: 2025-12-05T13:36:01Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '790'
- _id: '230'
- _id: '429'
- _id: '27'
- _id: '35'
doi: 10.1088/1742-6596/2701/1/012094
intvolume: ' 2701'
issue: '1'
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: 'Journal of Physics: Conference Series'
publication_identifier:
issn:
- 1742-6588
- 1742-6596
publication_status: published
publisher: IOP Publishing
status: public
title: Relativistic calculation of the orbital hyperfine splitting in complex microscopic
structures
type: journal_article
user_id: '16199'
volume: 2701
year: '2024'
...
---
_id: '54866'
author:
- first_name: Jonathan
full_name: Diederich, Jonathan
last_name: Diederich
- first_name: Jennifer
full_name: Velasquez Rojas, Jennifer
last_name: Velasquez Rojas
- first_name: Mohammad Amin
full_name: Zare Pour, Mohammad Amin
last_name: Zare Pour
- first_name: Isaac Azahel
full_name: Ruiz Alvarado, Isaac Azahel
id: '79462'
last_name: Ruiz Alvarado
orcid: 0000-0002-4710-1170
- first_name: Agnieszka
full_name: Paszuk, Agnieszka
last_name: Paszuk
- first_name: Rachele
full_name: Sciotto, Rachele
last_name: Sciotto
- first_name: Christian
full_name: Höhn, Christian
last_name: Höhn
- first_name: Klaus
full_name: Schwarzburg, Klaus
last_name: Schwarzburg
- first_name: David
full_name: Ostheimer, David
last_name: Ostheimer
- first_name: Rainer
full_name: Eichberger, Rainer
last_name: Eichberger
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Thomas
full_name: Hannappel, Thomas
last_name: Hannappel
- first_name: Roel
full_name: van de Krol, Roel
last_name: van de Krol
- first_name: Dennis
full_name: Friedrich, Dennis
last_name: Friedrich
citation:
ama: 'Diederich J, Velasquez Rojas J, Zare Pour MA, et al. Unraveling Electron Dynamics
in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study.
Journal of the American Chemical Society. 2024;146(13):8949-8960. doi:10.1021/jacs.3c12487'
apa: 'Diederich, J., Velasquez Rojas, J., Zare Pour, M. A., Ruiz Alvarado, I. A.,
Paszuk, A., Sciotto, R., Höhn, C., Schwarzburg, K., Ostheimer, D., Eichberger,
R., Schmidt, W. G., Hannappel, T., van de Krol, R., & Friedrich, D. (2024).
Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved
Two-Photon Photoemission Study. Journal of the American Chemical Society,
146(13), 8949–8960. https://doi.org/10.1021/jacs.3c12487'
bibtex: '@article{Diederich_Velasquez Rojas_Zare Pour_Ruiz Alvarado_Paszuk_Sciotto_Höhn_Schwarzburg_Ostheimer_Eichberger_et
al._2024, title={Unraveling Electron Dynamics in p-type Indium Phosphide (100):
A Time-Resolved Two-Photon Photoemission Study}, volume={146}, DOI={10.1021/jacs.3c12487},
number={13}, journal={Journal of the American Chemical Society}, publisher={American
Chemical Society (ACS)}, author={Diederich, Jonathan and Velasquez Rojas, Jennifer
and Zare Pour, Mohammad Amin and Ruiz Alvarado, Isaac Azahel and Paszuk, Agnieszka
and Sciotto, Rachele and Höhn, Christian and Schwarzburg, Klaus and Ostheimer,
David and Eichberger, Rainer and et al.}, year={2024}, pages={8949–8960} }'
chicago: 'Diederich, Jonathan, Jennifer Velasquez Rojas, Mohammad Amin Zare Pour,
Isaac Azahel Ruiz Alvarado, Agnieszka Paszuk, Rachele Sciotto, Christian Höhn,
et al. “Unraveling Electron Dynamics in P-Type Indium Phosphide (100): A Time-Resolved
Two-Photon Photoemission Study.” Journal of the American Chemical Society
146, no. 13 (2024): 8949–60. https://doi.org/10.1021/jacs.3c12487.'
ieee: 'J. Diederich et al., “Unraveling Electron Dynamics in p-type Indium
Phosphide (100): A Time-Resolved Two-Photon Photoemission Study,” Journal of
the American Chemical Society, vol. 146, no. 13, pp. 8949–8960, 2024, doi:
10.1021/jacs.3c12487.'
mla: 'Diederich, Jonathan, et al. “Unraveling Electron Dynamics in P-Type Indium
Phosphide (100): A Time-Resolved Two-Photon Photoemission Study.” Journal of
the American Chemical Society, vol. 146, no. 13, American Chemical Society
(ACS), 2024, pp. 8949–60, doi:10.1021/jacs.3c12487.'
short: J. Diederich, J. Velasquez Rojas, M.A. Zare Pour, I.A. Ruiz Alvarado, A.
Paszuk, R. Sciotto, C. Höhn, K. Schwarzburg, D. Ostheimer, R. Eichberger, W.G.
Schmidt, T. Hannappel, R. van de Krol, D. Friedrich, Journal of the American Chemical
Society 146 (2024) 8949–8960.
date_created: 2024-06-24T09:42:46Z
date_updated: 2025-12-05T13:37:59Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '27'
- _id: '35'
doi: 10.1021/jacs.3c12487
intvolume: ' 146'
issue: '13'
language:
- iso: eng
page: 8949-8960
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Journal of the American Chemical Society
publication_identifier:
issn:
- 0002-7863
- 1520-5126
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: 'Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved
Two-Photon Photoemission Study'
type: journal_article
user_id: '16199'
volume: 146
year: '2024'
...
---
_id: '54855'
abstract:
- lang: eng
text: Density-functional theory calculations on P-rich InP(001):H surfaces
are presented. Depending on temperature, pressure and substrate doping, hydrogen
desorption or adsorption will occur and influence the surface electronic properties.
For p-doped samples, the charge transition levels of the P dangling bond defects
resulting from H desorption will lead to Fermi level pinning in the lower half
of the band gap. This explains recent experimental data. For n-doped substrates,
H-deficient surfaces are the ground-state structure. This will lead to Fermi level
pinning below the bulk conduction band minimum. Surface defects resulting from
the adsorption of additional hydrogen can be expected as well, but affect the
surface electronic properties less than H desorption.
author:
- first_name: Rachele
full_name: Sciotto, Rachele
last_name: Sciotto
- first_name: Isaac Azahel
full_name: Ruiz Alvarado, Isaac Azahel
id: '79462'
last_name: Ruiz Alvarado
orcid: 0000-0002-4710-1170
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Sciotto R, Ruiz Alvarado IA, Schmidt WG. Substrate Doping and Defect Influence
on P-Rich InP(001):H Surface Properties. Surfaces. 2024;7(1):79-87. doi:10.3390/surfaces7010006
apa: Sciotto, R., Ruiz Alvarado, I. A., & Schmidt, W. G. (2024). Substrate Doping
and Defect Influence on P-Rich InP(001):H Surface Properties. Surfaces,
7(1), 79–87. https://doi.org/10.3390/surfaces7010006
bibtex: '@article{Sciotto_Ruiz Alvarado_Schmidt_2024, title={Substrate Doping and
Defect Influence on P-Rich InP(001):H Surface Properties}, volume={7}, DOI={10.3390/surfaces7010006}, number={1},
journal={Surfaces}, publisher={MDPI AG}, author={Sciotto, Rachele and Ruiz Alvarado,
Isaac Azahel and Schmidt, Wolf Gero}, year={2024}, pages={79–87} }'
chicago: 'Sciotto, Rachele, Isaac Azahel Ruiz Alvarado, and Wolf Gero Schmidt. “Substrate
Doping and Defect Influence on P-Rich InP(001):H Surface Properties.” Surfaces
7, no. 1 (2024): 79–87. https://doi.org/10.3390/surfaces7010006.'
ieee: 'R. Sciotto, I. A. Ruiz Alvarado, and W. G. Schmidt, “Substrate Doping and
Defect Influence on P-Rich InP(001):H Surface Properties,” Surfaces, vol.
7, no. 1, pp. 79–87, 2024, doi: 10.3390/surfaces7010006.'
mla: Sciotto, Rachele, et al. “Substrate Doping and Defect Influence on P-Rich InP(001):H
Surface Properties.” Surfaces, vol. 7, no. 1, MDPI AG, 2024, pp. 79–87,
doi:10.3390/surfaces7010006.
short: R. Sciotto, I.A. Ruiz Alvarado, W.G. Schmidt, Surfaces 7 (2024) 79–87.
date_created: 2024-06-24T06:24:26Z
date_updated: 2025-12-05T13:36:19Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '27'
- _id: '35'
doi: 10.3390/surfaces7010006
intvolume: ' 7'
issue: '1'
language:
- iso: eng
page: 79-87
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Surfaces
publication_identifier:
issn:
- 2571-9637
publication_status: published
publisher: MDPI AG
status: public
title: Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties
type: journal_article
user_id: '16199'
volume: 7
year: '2024'
...
---
_id: '54869'
article_number: '100629'
author:
- first_name: H.
full_name: Pfnür, H.
last_name: Pfnür
- first_name: C.
full_name: Tegenkamp, C.
last_name: Tegenkamp
- first_name: S.
full_name: Sanna, S.
last_name: Sanna
- first_name: E.
full_name: Jeckelmann, E.
last_name: Jeckelmann
- first_name: M.
full_name: Horn-von Hoegen, M.
last_name: Horn-von Hoegen
- first_name: U.
full_name: Bovensiepen, U.
last_name: Bovensiepen
- first_name: N.
full_name: Esser, N.
last_name: Esser
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: M.
full_name: Dähne, M.
last_name: Dähne
- first_name: S.
full_name: Wippermann, S.
last_name: Wippermann
- first_name: F.
full_name: Bechstedt, F.
last_name: Bechstedt
- first_name: M.
full_name: Bode, M.
last_name: Bode
- first_name: R.
full_name: Claessen, R.
last_name: Claessen
- first_name: R.
full_name: Ernstorfer, R.
last_name: Ernstorfer
- first_name: C.
full_name: Hogan, C.
last_name: Hogan
- first_name: M.
full_name: Ligges, M.
last_name: Ligges
- first_name: A.
full_name: Pucci, A.
last_name: Pucci
- first_name: J.
full_name: Schäfer, J.
last_name: Schäfer
- first_name: E.
full_name: Speiser, E.
last_name: Speiser
- first_name: M.
full_name: Wolf, M.
last_name: Wolf
- first_name: J.
full_name: Wollschläger, J.
last_name: Wollschläger
citation:
ama: 'Pfnür H, Tegenkamp C, Sanna S, et al. Atomic wires on substrates: Physics
between one and two dimensions. Surface Science Reports. 2024;79(2). doi:10.1016/j.surfrep.2024.100629'
apa: 'Pfnür, H., Tegenkamp, C., Sanna, S., Jeckelmann, E., Horn-von Hoegen, M.,
Bovensiepen, U., Esser, N., Schmidt, W. G., Dähne, M., Wippermann, S., Bechstedt,
F., Bode, M., Claessen, R., Ernstorfer, R., Hogan, C., Ligges, M., Pucci, A.,
Schäfer, J., Speiser, E., … Wollschläger, J. (2024). Atomic wires on substrates:
Physics between one and two dimensions. Surface Science Reports, 79(2),
Article 100629. https://doi.org/10.1016/j.surfrep.2024.100629'
bibtex: '@article{Pfnür_Tegenkamp_Sanna_Jeckelmann_Horn-von Hoegen_Bovensiepen_Esser_Schmidt_Dähne_Wippermann_et
al._2024, title={Atomic wires on substrates: Physics between one and two dimensions},
volume={79}, DOI={10.1016/j.surfrep.2024.100629},
number={2100629}, journal={Surface Science Reports}, publisher={Elsevier BV},
author={Pfnür, H. and Tegenkamp, C. and Sanna, S. and Jeckelmann, E. and Horn-von
Hoegen, M. and Bovensiepen, U. and Esser, N. and Schmidt, Wolf Gero and Dähne,
M. and Wippermann, S. and et al.}, year={2024} }'
chicago: 'Pfnür, H., C. Tegenkamp, S. Sanna, E. Jeckelmann, M. Horn-von Hoegen,
U. Bovensiepen, N. Esser, et al. “Atomic Wires on Substrates: Physics between
One and Two Dimensions.” Surface Science Reports 79, no. 2 (2024). https://doi.org/10.1016/j.surfrep.2024.100629.'
ieee: 'H. Pfnür et al., “Atomic wires on substrates: Physics between one
and two dimensions,” Surface Science Reports, vol. 79, no. 2, Art. no.
100629, 2024, doi: 10.1016/j.surfrep.2024.100629.'
mla: 'Pfnür, H., et al. “Atomic Wires on Substrates: Physics between One and Two
Dimensions.” Surface Science Reports, vol. 79, no. 2, 100629, Elsevier
BV, 2024, doi:10.1016/j.surfrep.2024.100629.'
short: H. Pfnür, C. Tegenkamp, S. Sanna, E. Jeckelmann, M. Horn-von Hoegen, U. Bovensiepen,
N. Esser, W.G. Schmidt, M. Dähne, S. Wippermann, F. Bechstedt, M. Bode, R. Claessen,
R. Ernstorfer, C. Hogan, M. Ligges, A. Pucci, J. Schäfer, E. Speiser, M. Wolf,
J. Wollschläger, Surface Science Reports 79 (2024).
date_created: 2024-06-24T09:50:37Z
date_updated: 2025-12-05T13:36:47Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '27'
- _id: '35'
doi: 10.1016/j.surfrep.2024.100629
intvolume: ' 79'
issue: '2'
language:
- iso: eng
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Surface Science Reports
publication_identifier:
issn:
- 0167-5729
publication_status: published
publisher: Elsevier BV
status: public
title: 'Atomic wires on substrates: Physics between one and two dimensions'
type: journal_article
user_id: '16199'
volume: 79
year: '2024'
...
---
_id: '54865'
article_number: '076201'
author:
- first_name: Marvin
full_name: Krenz, Marvin
id: '52309'
last_name: Krenz
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: Krenz M, Gerstmann U, Schmidt WG. Defect-Assisted Exciton Transfer across the
Tetracene-Si(111):H Interface. Physical Review Letters. 2024;132(7). doi:10.1103/physrevlett.132.076201
apa: Krenz, M., Gerstmann, U., & Schmidt, W. G. (2024). Defect-Assisted Exciton
Transfer across the Tetracene-Si(111):H Interface. Physical Review Letters,
132(7), Article 076201. https://doi.org/10.1103/physrevlett.132.076201
bibtex: '@article{Krenz_Gerstmann_Schmidt_2024, title={Defect-Assisted Exciton Transfer
across the Tetracene-Si(111):H Interface}, volume={132}, DOI={10.1103/physrevlett.132.076201},
number={7076201}, journal={Physical Review Letters}, publisher={American Physical
Society (APS)}, author={Krenz, Marvin and Gerstmann, Uwe and Schmidt, Wolf Gero},
year={2024} }'
chicago: Krenz, Marvin, Uwe Gerstmann, and Wolf Gero Schmidt. “Defect-Assisted Exciton
Transfer across the Tetracene-Si(111):H Interface.” Physical Review Letters
132, no. 7 (2024). https://doi.org/10.1103/physrevlett.132.076201.
ieee: 'M. Krenz, U. Gerstmann, and W. G. Schmidt, “Defect-Assisted Exciton Transfer
across the Tetracene-Si(111):H Interface,” Physical Review Letters, vol.
132, no. 7, Art. no. 076201, 2024, doi: 10.1103/physrevlett.132.076201.'
mla: Krenz, Marvin, et al. “Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H
Interface.” Physical Review Letters, vol. 132, no. 7, 076201, American
Physical Society (APS), 2024, doi:10.1103/physrevlett.132.076201.
short: M. Krenz, U. Gerstmann, W.G. Schmidt, Physical Review Letters 132 (2024).
date_created: 2024-06-24T09:39:42Z
date_updated: 2025-12-05T13:38:22Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '790'
- _id: '429'
- _id: '27'
- _id: '230'
- _id: '35'
doi: 10.1103/physrevlett.132.076201
intvolume: ' 132'
issue: '7'
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Physical Review Letters
publication_identifier:
issn:
- 0031-9007
- 1079-7114
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Defect-Assisted Exciton Transfer across the Tetracene-Si(111):H Interface
type: journal_article
user_id: '16199'
volume: 132
year: '2024'
...
---
_id: '62868'
abstract:
- lang: eng
text: We theoretically investigate strategies for the deterministic creation
of trains of time-bin entangled photons using an individual quantum emitter described
by a Λ-type electronic system. We explicitly demonstrate the theoretical generation
of linear cluster states with substantial numbers of entangled photonic qubits
in full microscopic numerical simulations. The underlying scheme is based on the
manipulation of ground state coherences through precise optical driving. One important
finding is that the most easily accessible quality metrics, the achievable rotation
fidelities, fall short in assessing the actual quantum correlations of the emitted
photons in the face of losses. To address this, we explicitly calculate stabilizer
generator expectation values as a superior gauge for the quantum properties of
the generated many-photon state. With widespread applicability in other emitter
and excitation–emission schemes also, our work lays the conceptual foundations
for an in-depth practical analysis of time-bin entanglement based on full numerical
simulations with predictive capabilities for realistic systems and setups, including
losses and imperfections. The specific results shown in the present work illustrate
that with controlled minimization of losses and realistic system parameters for
quantum-dot type systems, useful linear cluster states of significant lengths
can be generated in the calculations, discussing the possibility of scalability
for quantum information processing endeavors.
article_number: '036110'
author:
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Nikolas
full_name: Köcher, Nikolas
id: '79191'
last_name: Köcher
- first_name: Nils
full_name: Heinisch, Nils
id: '90283'
last_name: Heinisch
orcid: 0009-0006-0984-2097
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch D, Köcher N, Heinisch N, Schumacher S. Time-bin entanglement in the deterministic
generation of linear photonic cluster states. APL Quantum. 2024;1(3). doi:10.1063/5.0214197
apa: Bauch, D., Köcher, N., Heinisch, N., & Schumacher, S. (2024). Time-bin
entanglement in the deterministic generation of linear photonic cluster states.
APL Quantum, 1(3), Article 036110. https://doi.org/10.1063/5.0214197
bibtex: '@article{Bauch_Köcher_Heinisch_Schumacher_2024, title={Time-bin entanglement
in the deterministic generation of linear photonic cluster states}, volume={1},
DOI={10.1063/5.0214197}, number={3036110},
journal={APL Quantum}, publisher={AIP Publishing}, author={Bauch, David and Köcher,
Nikolas and Heinisch, Nils and Schumacher, Stefan}, year={2024} }'
chicago: Bauch, David, Nikolas Köcher, Nils Heinisch, and Stefan Schumacher. “Time-Bin
Entanglement in the Deterministic Generation of Linear Photonic Cluster States.”
APL Quantum 1, no. 3 (2024). https://doi.org/10.1063/5.0214197.
ieee: 'D. Bauch, N. Köcher, N. Heinisch, and S. Schumacher, “Time-bin entanglement
in the deterministic generation of linear photonic cluster states,” APL Quantum,
vol. 1, no. 3, Art. no. 036110, 2024, doi: 10.1063/5.0214197.'
mla: Bauch, David, et al. “Time-Bin Entanglement in the Deterministic Generation
of Linear Photonic Cluster States.” APL Quantum, vol. 1, no. 3, 036110,
AIP Publishing, 2024, doi:10.1063/5.0214197.
short: D. Bauch, N. Köcher, N. Heinisch, S. Schumacher, APL Quantum 1 (2024).
date_created: 2025-12-04T12:35:53Z
date_updated: 2025-12-05T13:55:00Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '35'
- _id: '27'
- _id: '429'
- _id: '230'
- _id: '623'
doi: 10.1063/5.0214197
intvolume: ' 1'
issue: '3'
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '173'
name: 'TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch
bei Telekom Wellenlängen'
- _id: '266'
name: 'PhoQC: Photonisches Quantencomputing'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '56'
name: TRR 142 - Project Area C
publication: APL Quantum
publication_identifier:
issn:
- 2835-0103
publication_status: published
publisher: AIP Publishing
status: public
title: Time-bin entanglement in the deterministic generation of linear photonic cluster
states
type: journal_article
user_id: '16199'
volume: 1
year: '2024'
...
---
_id: '62942'
abstract:
- lang: eng
text: AbstractNanostructured bilayer thin films
with superhydrophobic and superhydrophilic surfaces were prepared using Ti6Al4V
alloy substrates which allowed for the comparative analysis of polyvinyl acetate
(PVAc) particle adsorption as a function of the interface structure. The PVAc
particles were obtained from emulsion polymerization of vinyl acetate. A superhydrophilic
TiO2 nanofiber-based 3D network was created on the Ti6Al4V
alloy substrate by application of a hydrothermal method. Subsequent UV-grafting
of ultra-thin polydimethylsiloxane (PDMS) layers resulted in a superhydrophobic
surface. The modification steps were followed via Diffuse Reflectance Infrared
Fourier Transform Spectroscopy, X-ray Photoelectron Spectroscopy, Field Emission-Scanning
Electron Microscopy, contact angle and Electrochemical Impedance Spectroscopy.
A mechanism for the adsorption of PVAc at the two electrolyte/substrate interfaces
could be revealed.
article_number: '294'
author:
- first_name: Vanessa
full_name: Neßlinger, Vanessa
id: '54649'
last_name: Neßlinger
orcid: 0000-0001-9416-1646
- first_name: Jan
full_name: Atlanov, Jan
last_name: Atlanov
- first_name: Guido
full_name: Grundmeier, Guido
id: '194'
last_name: Grundmeier
citation:
ama: Neßlinger V, Atlanov J, Grundmeier G. Interactions of polyvinyl acetate dispersions
with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces.
Discover Applied Sciences. 2024;6(6). doi:10.1007/s42452-024-05916-z
apa: Neßlinger, V., Atlanov, J., & Grundmeier, G. (2024). Interactions of polyvinyl
acetate dispersions with nanostructured superhydrophilic and superhydrophobic
Ti6Al4V alloy surfaces. Discover Applied Sciences, 6(6), Article
294. https://doi.org/10.1007/s42452-024-05916-z
bibtex: '@article{Neßlinger_Atlanov_Grundmeier_2024, title={Interactions of polyvinyl
acetate dispersions with nanostructured superhydrophilic and superhydrophobic
Ti6Al4V alloy surfaces}, volume={6}, DOI={10.1007/s42452-024-05916-z},
number={6294}, journal={Discover Applied Sciences}, publisher={Springer Science
and Business Media LLC}, author={Neßlinger, Vanessa and Atlanov, Jan and Grundmeier,
Guido}, year={2024} }'
chicago: Neßlinger, Vanessa, Jan Atlanov, and Guido Grundmeier. “Interactions of
Polyvinyl Acetate Dispersions with Nanostructured Superhydrophilic and Superhydrophobic
Ti6Al4V Alloy Surfaces.” Discover Applied Sciences 6, no. 6 (2024). https://doi.org/10.1007/s42452-024-05916-z.
ieee: 'V. Neßlinger, J. Atlanov, and G. Grundmeier, “Interactions of polyvinyl acetate
dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V
alloy surfaces,” Discover Applied Sciences, vol. 6, no. 6, Art. no. 294,
2024, doi: 10.1007/s42452-024-05916-z.'
mla: Neßlinger, Vanessa, et al. “Interactions of Polyvinyl Acetate Dispersions with
Nanostructured Superhydrophilic and Superhydrophobic Ti6Al4V Alloy Surfaces.”
Discover Applied Sciences, vol. 6, no. 6, 294, Springer Science and Business
Media LLC, 2024, doi:10.1007/s42452-024-05916-z.
short: V. Neßlinger, J. Atlanov, G. Grundmeier, Discover Applied Sciences 6 (2024).
date_created: 2025-12-08T08:32:26Z
date_updated: 2025-12-08T08:33:00Z
department:
- _id: '302'
doi: 10.1007/s42452-024-05916-z
intvolume: ' 6'
issue: '6'
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Discover Applied Sciences
publication_identifier:
issn:
- 3004-9261
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic
and superhydrophobic Ti6Al4V alloy surfaces
type: journal_article
user_id: '54649'
volume: 6
year: '2024'
...