---
_id: '61359'
abstract:
- lang: eng
text: AbstractThe current efficiency records for
generating green hydrogen via solar water splitting are held by indium phosphide
(InP)‐based photo‐absorbers, protected by TiO2 layers grown
through atomic layer deposition (ALD). InP is also a leading material for photonic
integrated circuits and computing, where ultrafast near‐surface behavior is key.
A previous study described electronic pathways at the phosphorus‐rich (P‐rich)
surface of p‐doped InP(100) using time‐resolved two‐photon photoemission (tr‐2PPE)
spectroscopy. Here, the intricate electron pathways of the P‐rich InP surface
modified with ALD‐deposited TiO2 are explored. Photoexcited
bulk InP electrons migrate through a bulk‐to‐surface transition cluster of states
and surface states and inject into the TiO2 conduction band
(CB). Energy levels and occupation dynamics of CB states in P‐rich InP and TiO2
adlayers are observed, with discrete states preserved up to 10 nm TiO2
deposition. Thermalization lifetimes of excited electrons > 0.8 eV above the
InP conduction band minimum (CBM) are preserved for layer thicknesses up to 2.5 nm.
Annealing at 300 °C to achieve crystalline TiO2 reconstructions
destroys interfacial states, affecting charge transfer. These observations enable
innovative engineering of the P‐rich InP/TiO2 heterointerface,
opening new possibilities for studying hot‐carrier extraction, adsorbate effects,
surface plasmons, and improving photovoltaic and PEC water‐splitting devices.
article_number: '2409455'
author:
- first_name: Jonathan
full_name: Diederich, Jonathan
last_name: Diederich
- first_name: Jennifer Velazquez
full_name: Rojas, Jennifer Velazquez
last_name: Rojas
- first_name: Agnieszka
full_name: Paszuk, Agnieszka
last_name: Paszuk
- first_name: Mohammad Amin Zare
full_name: Pour, Mohammad Amin Zare
last_name: Pour
- first_name: Christian
full_name: Höhn, Christian
last_name: Höhn
- first_name: Isaac Azahel Ruiz
full_name: Alvarado, Isaac Azahel Ruiz
last_name: Alvarado
- 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, Rojas JV, Paszuk A, et al. Ultrafast Electron Dynamics at the
P‐rich Indium Phosphide/TiO2 Interface. Advanced Functional Materials.
2024;34(49). doi:10.1002/adfm.202409455
apa: Diederich, J., Rojas, J. V., Paszuk, A., Pour, M. A. Z., Höhn, C., Alvarado,
I. A. R., Schwarzburg, K., Ostheimer, D., Eichberger, R., Schmidt, W. G., Hannappel,
T., van de Krol, R., & Friedrich, D. (2024). Ultrafast Electron Dynamics at
the P‐rich Indium Phosphide/TiO2 Interface. Advanced Functional
Materials, 34(49), Article 2409455. https://doi.org/10.1002/adfm.202409455
bibtex: '@article{Diederich_Rojas_Paszuk_Pour_Höhn_Alvarado_Schwarzburg_Ostheimer_Eichberger_Schmidt_et
al._2024, title={Ultrafast Electron Dynamics at the P‐rich Indium Phosphide/TiO2
Interface}, volume={34}, DOI={10.1002/adfm.202409455},
number={492409455}, journal={Advanced Functional Materials}, publisher={Wiley},
author={Diederich, Jonathan and Rojas, Jennifer Velazquez and Paszuk, Agnieszka
and Pour, Mohammad Amin Zare and Höhn, Christian and Alvarado, Isaac Azahel Ruiz
and Schwarzburg, Klaus and Ostheimer, David and Eichberger, Rainer and Schmidt,
Wolf Gero and et al.}, year={2024} }'
chicago: Diederich, Jonathan, Jennifer Velazquez Rojas, Agnieszka Paszuk, Mohammad
Amin Zare Pour, Christian Höhn, Isaac Azahel Ruiz Alvarado, Klaus Schwarzburg,
et al. “Ultrafast Electron Dynamics at the P‐rich Indium Phosphide/TiO2
Interface.” Advanced Functional Materials 34, no. 49 (2024). https://doi.org/10.1002/adfm.202409455.
ieee: 'J. Diederich et al., “Ultrafast Electron Dynamics at the P‐rich Indium
Phosphide/TiO2 Interface,” Advanced Functional Materials, vol.
34, no. 49, Art. no. 2409455, 2024, doi: 10.1002/adfm.202409455.'
mla: Diederich, Jonathan, et al. “Ultrafast Electron Dynamics at the P‐rich Indium
Phosphide/TiO2 Interface.” Advanced Functional Materials, vol.
34, no. 49, 2409455, Wiley, 2024, doi:10.1002/adfm.202409455.
short: J. Diederich, J.V. Rojas, A. Paszuk, M.A.Z. Pour, C. Höhn, I.A.R. Alvarado,
K. Schwarzburg, D. Ostheimer, R. Eichberger, W.G. Schmidt, T. Hannappel, R. van
de Krol, D. Friedrich, Advanced Functional Materials 34 (2024).
date_created: 2025-09-18T11:37:51Z
date_updated: 2025-12-05T13:35:09Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '35'
- _id: '230'
doi: 10.1002/adfm.202409455
intvolume: ' 34'
issue: '49'
language:
- iso: eng
publication: Advanced Functional Materials
publication_identifier:
issn:
- 1616-301X
- 1616-3028
publication_status: published
publisher: Wiley
status: public
title: Ultrafast Electron Dynamics at the P‐rich Indium Phosphide/TiO2
Interface
type: journal_article
user_id: '16199'
volume: 34
year: '2024'
...
---
_id: '60581'
abstract:
- lang: eng
text: "Abstract\r\n The natural band
alignments between indium phosphide and the main dioxides of titanium, i.e. rutile,
anatase, and brookite as well as amorphous titania are calculated from the branch-point
energies of the respective materials. Irrespective of the titania polymorph considered,
type-I band alignment is predicted. This may change, however, in dependence on
the microscopic interface structure: supercell calculations for amorphous titania
grown on P-rich InP(001) surfaces result in a titania conduction band that nearly
aligns with that of InP. Depending on the interface specifics, both type-I band
and type-II band alignments are observed in the simulations. This agrees with
recent experimental findings."
article_number: '075001'
author:
- first_name: Isaac Azahel
full_name: Ruiz Alvarado, Isaac Azahel
id: '79462'
last_name: Ruiz Alvarado
orcid: 0000-0002-4710-1170
- first_name: Christian
full_name: Dreßler, Christian
last_name: Dreßler
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: 'Ruiz Alvarado IA, Dreßler C, Schmidt WG. Band alignment at InP/TiO2
interfaces from density-functional theory. Journal of Physics: Condensed Matter.
2024;37(7). doi:10.1088/1361-648x/ad9725'
apa: 'Ruiz Alvarado, I. A., Dreßler, C., & Schmidt, W. G. (2024). Band alignment
at InP/TiO2 interfaces from density-functional theory. Journal of
Physics: Condensed Matter, 37(7), Article 075001. https://doi.org/10.1088/1361-648x/ad9725'
bibtex: '@article{Ruiz Alvarado_Dreßler_Schmidt_2024, title={Band alignment at InP/TiO2
interfaces from density-functional theory}, volume={37}, DOI={10.1088/1361-648x/ad9725},
number={7075001}, journal={Journal of Physics: Condensed Matter}, publisher={IOP
Publishing}, author={Ruiz Alvarado, Isaac Azahel and Dreßler, Christian and Schmidt,
Wolf Gero}, year={2024} }'
chicago: 'Ruiz Alvarado, Isaac Azahel, Christian Dreßler, and Wolf Gero Schmidt.
“Band Alignment at InP/TiO2 Interfaces from Density-Functional Theory.”
Journal of Physics: Condensed Matter 37, no. 7 (2024). https://doi.org/10.1088/1361-648x/ad9725.'
ieee: 'I. A. Ruiz Alvarado, C. Dreßler, and W. G. Schmidt, “Band alignment at InP/TiO2
interfaces from density-functional theory,” Journal of Physics: Condensed Matter,
vol. 37, no. 7, Art. no. 075001, 2024, doi: 10.1088/1361-648x/ad9725.'
mla: 'Ruiz Alvarado, Isaac Azahel, et al. “Band Alignment at InP/TiO2
Interfaces from Density-Functional Theory.” Journal of Physics: Condensed Matter,
vol. 37, no. 7, 075001, IOP Publishing, 2024, doi:10.1088/1361-648x/ad9725.'
short: 'I.A. Ruiz Alvarado, C. Dreßler, W.G. Schmidt, Journal of Physics: Condensed
Matter 37 (2024).'
date_created: 2025-07-09T13:40:51Z
date_updated: 2025-12-05T13:35:44Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '27'
- _id: '35'
doi: 10.1088/1361-648x/ad9725
intvolume: ' 37'
issue: '7'
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
- _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*)'
publication: 'Journal of Physics: Condensed Matter'
publication_identifier:
issn:
- 0953-8984
- 1361-648X
publication_status: published
publisher: IOP Publishing
status: public
title: Band alignment at InP/TiO2 interfaces from density-functional theory
type: journal_article
user_id: '16199'
volume: 37
year: '2024'
...
---
_id: '54867'
abstract:
- lang: eng
text: "\r\nArtificial leaves could be the breakthrough technology to overcome
the limitations of storage and mobility through the synthesis of chemical fuels
from sunlight, which will be an essential component of a sustainable future energy
system. However, the realization of efficient solar‐driven artificial leaf structures
requires integrated specialized materials such as semiconductor absorbers, catalysts,
interfacial passivation, and contact layers. To date, no competitive system has
emerged due to a lack of scientific understanding, knowledge‐based design rules,
and scalable engineering strategies. Herein, competitive artificial leaf devices
for water splitting, focusing on multiabsorber structures to achieve solar‐to‐hydrogen
conversion efficiencies exceeding 15%, are discussed. A key challenge is integrating
photovoltaic and electrochemical functionalities in a single device. Additionally,
optimal electrocatalysts for intermittent operation at photocurrent densities
of 10–20 mA cm−2 must be immobilized on the absorbers with
specifically designed interfacial passivation and contact layers, so‐called buried
junctions. This minimizes voltage and current losses and prevents corrosive side
reactions. Key challenges include understanding elementary steps, identifying
suitable materials, and developing synthesis and processing techniques for all
integrated components. This is crucial for efficient, robust, and scalable devices.
Herein, corresponding research efforts to produce green hydrogen with unassisted
solar‐driven (photo‐)electrochemical devices are discussed and reported."
author:
- first_name: Thomas
full_name: Hannappel, Thomas
last_name: Hannappel
- first_name: Sahar
full_name: Shekarabi, Sahar
last_name: Shekarabi
- first_name: Wolfram
full_name: Jaegermann, Wolfram
last_name: Jaegermann
- first_name: Erich
full_name: Runge, Erich
last_name: Runge
- first_name: Jan Philipp
full_name: Hofmann, Jan Philipp
last_name: Hofmann
- first_name: Roel
full_name: van de Krol, Roel
last_name: van de Krol
- first_name: Matthias M.
full_name: May, Matthias M.
last_name: May
- first_name: Agnieszka
full_name: Paszuk, Agnieszka
last_name: Paszuk
- first_name: Franziska
full_name: Hess, Franziska
last_name: Hess
- first_name: Arno
full_name: Bergmann, Arno
last_name: Bergmann
- first_name: Andreas
full_name: Bund, Andreas
last_name: Bund
- first_name: Christian
full_name: Cierpka, Christian
last_name: Cierpka
- first_name: Christian
full_name: Dreßler, Christian
last_name: Dreßler
- first_name: Fabio
full_name: Dionigi, Fabio
last_name: Dionigi
- first_name: Dennis
full_name: Friedrich, Dennis
last_name: Friedrich
- first_name: Marco
full_name: Favaro, Marco
last_name: Favaro
- first_name: Stefan
full_name: Krischok, Stefan
last_name: Krischok
- first_name: Mario
full_name: Kurniawan, Mario
last_name: Kurniawan
- first_name: Kathy
full_name: Lüdge, Kathy
last_name: Lüdge
- first_name: Yong
full_name: Lei, Yong
last_name: Lei
- first_name: Beatriz
full_name: Roldán Cuenya, Beatriz
last_name: Roldán Cuenya
- first_name: Peter
full_name: Schaaf, Peter
last_name: Schaaf
- first_name: Rüdiger
full_name: Schmidt‐Grund, Rüdiger
last_name: Schmidt‐Grund
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Peter
full_name: Strasser, Peter
last_name: Strasser
- first_name: Eva
full_name: Unger, Eva
last_name: Unger
- first_name: Manuel F.
full_name: Vasquez Montoya, Manuel F.
last_name: Vasquez Montoya
- first_name: Dong
full_name: Wang, Dong
last_name: Wang
- first_name: Hongbin
full_name: Zhang, Hongbin
last_name: Zhang
citation:
ama: 'Hannappel T, Shekarabi S, Jaegermann W, et al. Integration of Multijunction
Absorbers and Catalysts for Efficient Solar‐Driven Artificial Leaf Structures:
A Physical and Materials Science Perspective. Solar RRL. 2024;8(11). doi:10.1002/solr.202301047'
apa: 'Hannappel, T., Shekarabi, S., Jaegermann, W., Runge, E., Hofmann, J. P., van
de Krol, R., May, M. M., Paszuk, A., Hess, F., Bergmann, A., Bund, A., Cierpka,
C., Dreßler, C., Dionigi, F., Friedrich, D., Favaro, M., Krischok, S., Kurniawan,
M., Lüdge, K., … Zhang, H. (2024). Integration of Multijunction Absorbers and
Catalysts for Efficient Solar‐Driven Artificial Leaf Structures: A Physical and
Materials Science Perspective. Solar RRL, 8(11). https://doi.org/10.1002/solr.202301047'
bibtex: '@article{Hannappel_Shekarabi_Jaegermann_Runge_Hofmann_van de Krol_May_Paszuk_Hess_Bergmann_et
al._2024, title={Integration of Multijunction Absorbers and Catalysts for Efficient
Solar‐Driven Artificial Leaf Structures: A Physical and Materials Science Perspective},
volume={8}, DOI={10.1002/solr.202301047},
number={11}, journal={Solar RRL}, publisher={Wiley}, author={Hannappel, Thomas
and Shekarabi, Sahar and Jaegermann, Wolfram and Runge, Erich and Hofmann, Jan
Philipp and van de Krol, Roel and May, Matthias M. and Paszuk, Agnieszka and Hess,
Franziska and Bergmann, Arno and et al.}, year={2024} }'
chicago: 'Hannappel, Thomas, Sahar Shekarabi, Wolfram Jaegermann, Erich Runge, Jan
Philipp Hofmann, Roel van de Krol, Matthias M. May, et al. “Integration of Multijunction
Absorbers and Catalysts for Efficient Solar‐Driven Artificial Leaf Structures:
A Physical and Materials Science Perspective.” Solar RRL 8, no. 11 (2024).
https://doi.org/10.1002/solr.202301047.'
ieee: 'T. Hannappel et al., “Integration of Multijunction Absorbers and Catalysts
for Efficient Solar‐Driven Artificial Leaf Structures: A Physical and Materials
Science Perspective,” Solar RRL, vol. 8, no. 11, 2024, doi: 10.1002/solr.202301047.'
mla: 'Hannappel, Thomas, et al. “Integration of Multijunction Absorbers and Catalysts
for Efficient Solar‐Driven Artificial Leaf Structures: A Physical and Materials
Science Perspective.” Solar RRL, vol. 8, no. 11, Wiley, 2024, doi:10.1002/solr.202301047.'
short: T. Hannappel, S. Shekarabi, W. Jaegermann, E. Runge, J.P. Hofmann, R. van
de Krol, M.M. May, A. Paszuk, F. Hess, A. Bergmann, A. Bund, C. Cierpka, C. Dreßler,
F. Dionigi, D. Friedrich, M. Favaro, S. Krischok, M. Kurniawan, K. Lüdge, Y. Lei,
B. Roldán Cuenya, P. Schaaf, R. Schmidt‐Grund, W.G. Schmidt, P. Strasser, E. Unger,
M.F. Vasquez Montoya, D. Wang, H. Zhang, Solar RRL 8 (2024).
date_created: 2024-06-24T09:44:41Z
date_updated: 2025-12-05T13:37:24Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '35'
doi: 10.1002/solr.202301047
intvolume: ' 8'
issue: '11'
language:
- iso: eng
publication: Solar RRL
publication_identifier:
issn:
- 2367-198X
- 2367-198X
publication_status: published
publisher: Wiley
status: public
title: 'Integration of Multijunction Absorbers and Catalysts for Efficient Solar‐Driven
Artificial Leaf Structures: A Physical and Materials Science Perspective'
type: journal_article
user_id: '16199'
volume: 8
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: '60582'
abstract:
- lang: eng
text: AbstractThe current efficiency records for
generating green hydrogen via solar water splitting are held by indium phosphide
(InP)‐based photo‐absorbers, protected by TiO2 layers grown
through atomic layer deposition (ALD). InP is also a leading material for photonic
integrated circuits and computing, where ultrafast near‐surface behavior is key.
A previous study described electronic pathways at the phosphorus‐rich (P‐rich)
surface of p‐doped InP(100) using time‐resolved two‐photon photoemission (tr‐2PPE)
spectroscopy. Here, the intricate electron pathways of the P‐rich InP surface
modified with ALD‐deposited TiO2 are explored. Photoexcited
bulk InP electrons migrate through a bulk‐to‐surface transition cluster of states
and surface states and inject into the TiO2 conduction band
(CB). Energy levels and occupation dynamics of CB states in P‐rich InP and TiO2
adlayers are observed, with discrete states preserved up to 10 nm TiO2
deposition. Thermalization lifetimes of excited electrons > 0.8 eV above the
InP conduction band minimum (CBM) are preserved for layer thicknesses up to 2.5 nm.
Annealing at 300 °C to achieve crystalline TiO2 reconstructions
destroys interfacial states, affecting charge transfer. These observations enable
innovative engineering of the P‐rich InP/TiO2 heterointerface,
opening new possibilities for studying hot‐carrier extraction, adsorbate effects,
surface plasmons, and improving photovoltaic and PEC water‐splitting devices.
article_type: original
author:
- first_name: Jonathan
full_name: Diederich, Jonathan
last_name: Diederich
- first_name: Jennifer Velazquez
full_name: Rojas, Jennifer Velazquez
last_name: Rojas
- first_name: Agnieszka
full_name: Paszuk, Agnieszka
last_name: Paszuk
- first_name: Mohammad Amin Zare
full_name: Pour, Mohammad Amin Zare
last_name: Pour
- first_name: Christian
full_name: Höhn, Christian
last_name: Höhn
- first_name: Isaac Azahel
full_name: Ruiz Alvarado, Isaac Azahel
id: '79462'
last_name: Ruiz Alvarado
orcid: 0000-0002-4710-1170
- 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, Rojas JV, Paszuk A, et al. Ultrafast Electron Dynamics at the
P‐rich Indium Phosphide/TiO2 Interface. Advanced Functional Materials.
2024;34(49). doi:10.1002/adfm.202409455
apa: Diederich, J., Rojas, J. V., Paszuk, A., Pour, M. A. Z., Höhn, C., Ruiz Alvarado,
I. A., Schwarzburg, K., Ostheimer, D., Eichberger, R., Schmidt, W. G., Hannappel,
T., van de Krol, R., & Friedrich, D. (2024). Ultrafast Electron Dynamics at
the P‐rich Indium Phosphide/TiO2 Interface. Advanced Functional
Materials, 34(49). https://doi.org/10.1002/adfm.202409455
bibtex: '@article{Diederich_Rojas_Paszuk_Pour_Höhn_Ruiz Alvarado_Schwarzburg_Ostheimer_Eichberger_Schmidt_et
al._2024, title={Ultrafast Electron Dynamics at the P‐rich Indium Phosphide/TiO2
Interface}, volume={34}, DOI={10.1002/adfm.202409455},
number={49}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Diederich,
Jonathan and Rojas, Jennifer Velazquez and Paszuk, Agnieszka and Pour, Mohammad
Amin Zare and Höhn, Christian and Ruiz Alvarado, Isaac Azahel and Schwarzburg,
Klaus and Ostheimer, David and Eichberger, Rainer and Schmidt, Wolf Gero and et
al.}, year={2024} }'
chicago: Diederich, Jonathan, Jennifer Velazquez Rojas, Agnieszka Paszuk, Mohammad
Amin Zare Pour, Christian Höhn, Isaac Azahel Ruiz Alvarado, Klaus Schwarzburg,
et al. “Ultrafast Electron Dynamics at the P‐rich Indium Phosphide/TiO2
Interface.” Advanced Functional Materials 34, no. 49 (2024). https://doi.org/10.1002/adfm.202409455.
ieee: 'J. Diederich et al., “Ultrafast Electron Dynamics at the P‐rich Indium
Phosphide/TiO2 Interface,” Advanced Functional Materials, vol.
34, no. 49, 2024, doi: 10.1002/adfm.202409455.'
mla: Diederich, Jonathan, et al. “Ultrafast Electron Dynamics at the P‐rich Indium
Phosphide/TiO2 Interface.” Advanced Functional Materials, vol.
34, no. 49, Wiley, 2024, doi:10.1002/adfm.202409455.
short: J. Diederich, J.V. Rojas, A. Paszuk, M.A.Z. Pour, C. Höhn, I.A. Ruiz Alvarado,
K. Schwarzburg, D. Ostheimer, R. Eichberger, W.G. Schmidt, T. Hannappel, R. van
de Krol, D. Friedrich, Advanced Functional Materials 34 (2024).
date_created: 2025-07-09T13:47:37Z
date_updated: 2025-12-05T13:39:54Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '27'
- _id: '35'
doi: 10.1002/adfm.202409455
intvolume: ' 34'
issue: '49'
language:
- iso: eng
publication: Advanced Functional Materials
publication_identifier:
issn:
- 1616-301X
- 1616-3028
publication_status: published
publisher: Wiley
status: public
title: Ultrafast Electron Dynamics at the P‐rich Indium Phosphide/TiO2
Interface
type: journal_article
user_id: '16199'
volume: 34
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: '62853'
abstract:
- lang: eng
text: "Abstract\r\n Developing
coherent excitation methods for quantum emitters ensuring high brightness, optimal
single‐photon purity and indistinguishability of the emitted photons has been
a key challenge in the past years. While various methods have been proposed and
explored, they all have specific advantages and disadvantages. This study investigates
the dynamics of the recent swing‐up scheme as an excitation method for a two‐level
system and its performance in single‐photon generation. By applying two far red‐detuned
laser pulses, the two‐level system can be prepared in the excited state with near‐unity
fidelity. The successful operation and coherent character of this technique are
demonstrated using a semiconductor quantum dot (QD). Moreover, the multi‐dimensional
parameter space of the two laser pulses is explored to analyze its impact on excitation
fidelity. Finally, the performance of the scheme as an excitation method for generating
high‐quality single photons is analyzed. The swing‐up scheme itself proves effective,
exhibiting nearly perfect single‐photon purity, while the observed indistinguishability
in the studied sample is limited by the influence of the inevitable high excitation
powers on the semiconductor environment of the quantum dot."
article_number: '2300359'
author:
- first_name: Katarina
full_name: Boos, Katarina
last_name: Boos
- first_name: Friedrich
full_name: Sbresny, Friedrich
last_name: Sbresny
- first_name: Sang Kyu
full_name: Kim, Sang Kyu
last_name: Kim
- first_name: Malte
full_name: Kremser, Malte
last_name: Kremser
- first_name: Hubert
full_name: Riedl, Hubert
last_name: Riedl
- first_name: Frederik W.
full_name: Bopp, Frederik W.
last_name: Bopp
- first_name: William
full_name: Rauhaus, William
last_name: Rauhaus
- first_name: Bianca
full_name: Scaparra, Bianca
last_name: Scaparra
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Jonathan J.
full_name: Finley, Jonathan J.
last_name: Finley
- first_name: Kai
full_name: Müller, Kai
last_name: Müller
- first_name: Lukas
full_name: Hanschke, Lukas
last_name: Hanschke
citation:
ama: Boos K, Sbresny F, Kim SK, et al. Coherent Swing‐Up Excitation for Semiconductor
Quantum Dots. Advanced Quantum Technologies. 2024;7(4). doi:10.1002/qute.202300359
apa: Boos, K., Sbresny, F., Kim, S. K., Kremser, M., Riedl, H., Bopp, F. W., Rauhaus,
W., Scaparra, B., Jöns, K., Finley, J. J., Müller, K., & Hanschke, L. (2024).
Coherent Swing‐Up Excitation for Semiconductor Quantum Dots. Advanced Quantum
Technologies, 7(4), Article 2300359. https://doi.org/10.1002/qute.202300359
bibtex: '@article{Boos_Sbresny_Kim_Kremser_Riedl_Bopp_Rauhaus_Scaparra_Jöns_Finley_et
al._2024, title={Coherent Swing‐Up Excitation for Semiconductor Quantum Dots},
volume={7}, DOI={10.1002/qute.202300359},
number={42300359}, journal={Advanced Quantum Technologies}, publisher={Wiley},
author={Boos, Katarina and Sbresny, Friedrich and Kim, Sang Kyu and Kremser, Malte
and Riedl, Hubert and Bopp, Frederik W. and Rauhaus, William and Scaparra, Bianca
and Jöns, Klaus and Finley, Jonathan J. and et al.}, year={2024} }'
chicago: Boos, Katarina, Friedrich Sbresny, Sang Kyu Kim, Malte Kremser, Hubert
Riedl, Frederik W. Bopp, William Rauhaus, et al. “Coherent Swing‐Up Excitation
for Semiconductor Quantum Dots.” Advanced Quantum Technologies 7, no. 4
(2024). https://doi.org/10.1002/qute.202300359.
ieee: 'K. Boos et al., “Coherent Swing‐Up Excitation for Semiconductor Quantum
Dots,” Advanced Quantum Technologies, vol. 7, no. 4, Art. no. 2300359,
2024, doi: 10.1002/qute.202300359.'
mla: Boos, Katarina, et al. “Coherent Swing‐Up Excitation for Semiconductor Quantum
Dots.” Advanced Quantum Technologies, vol. 7, no. 4, 2300359, Wiley, 2024,
doi:10.1002/qute.202300359.
short: K. Boos, F. Sbresny, S.K. Kim, M. Kremser, H. Riedl, F.W. Bopp, W. Rauhaus,
B. Scaparra, K. Jöns, J.J. Finley, K. Müller, L. Hanschke, Advanced Quantum Technologies
7 (2024).
date_created: 2025-12-04T12:08:46Z
date_updated: 2025-12-11T13:00:06Z
department:
- _id: '623'
- _id: '15'
- _id: '429'
- _id: '642'
doi: 10.1002/qute.202300359
intvolume: ' 7'
issue: '4'
language:
- iso: eng
publication: Advanced Quantum Technologies
publication_identifier:
issn:
- 2511-9044
- 2511-9044
publication_status: published
publisher: Wiley
status: public
title: Coherent Swing‐Up Excitation for Semiconductor Quantum Dots
type: journal_article
user_id: '48188'
volume: 7
year: '2024'
...
---
_id: '62858'
abstract:
- lang: eng
text: Phonons in solid-state quantum emitters play a crucial role in their performance
as photon sources in quantum technology. For resonant driving, phonons dampen
the Rabi oscillations resulting in reduced preparation fidelities. The phonon
spectral density, which quantifies the strength of the carrier-phonon interaction,
is non-monotonous as a function of energy. As one of the most prominent consequences,
this leads to the reappearance of Rabi rotations for increasing pulse power, which
was theoretically predicted in Phys. Rev. Lett. 98, 227403 (2007). In this paper
we present the experimental demonstration of the reappearance of Rabi rotations.
author:
- first_name: L.
full_name: Hanschke, L.
last_name: Hanschke
- first_name: T. K.
full_name: Bracht, T. K.
last_name: Bracht
- first_name: E.
full_name: Schöll, E.
last_name: Schöll
- first_name: David
full_name: Bauch, David
id: '44172'
last_name: Bauch
- first_name: Eva
full_name: Berger, Eva
last_name: Berger
- first_name: Patricia
full_name: Kallert, Patricia
last_name: Kallert
- first_name: M.
full_name: Peter, M.
last_name: Peter
- first_name: A. J.
full_name: Garcia, A. J.
last_name: Garcia
- first_name: S. F. Covre da
full_name: Silva, S. F. Covre da
last_name: Silva
- first_name: S.
full_name: Manna, S.
last_name: Manna
- first_name: A.
full_name: Rastelli, A.
last_name: Rastelli
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: D. E.
full_name: Reiter, D. E.
last_name: Reiter
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
citation:
ama: Hanschke L, Bracht TK, Schöll E, et al. Experimental measurement of the reappearance
of Rabi rotations in semiconductor quantum dots. arXiv:240919167. Published
online 2024.
apa: Hanschke, L., Bracht, T. K., Schöll, E., Bauch, D., Berger, E., Kallert, P.,
Peter, M., Garcia, A. J., Silva, S. F. C. da, Manna, S., Rastelli, A., Schumacher,
S., Reiter, D. E., & Jöns, K. (2024). Experimental measurement of the reappearance
of Rabi rotations in semiconductor quantum dots. In arXiv:2409.19167.
bibtex: '@article{Hanschke_Bracht_Schöll_Bauch_Berger_Kallert_Peter_Garcia_Silva_Manna_et
al._2024, title={Experimental measurement of the reappearance of Rabi rotations
in semiconductor quantum dots}, journal={arXiv:2409.19167}, author={Hanschke,
L. and Bracht, T. K. and Schöll, E. and Bauch, David and Berger, Eva and Kallert,
Patricia and Peter, M. and Garcia, A. J. and Silva, S. F. Covre da and Manna,
S. and et al.}, year={2024} }'
chicago: Hanschke, L., T. K. Bracht, E. Schöll, David Bauch, Eva Berger, Patricia
Kallert, M. Peter, et al. “Experimental Measurement of the Reappearance of Rabi
Rotations in Semiconductor Quantum Dots.” ArXiv:2409.19167, 2024.
ieee: L. Hanschke et al., “Experimental measurement of the reappearance of
Rabi rotations in semiconductor quantum dots,” arXiv:2409.19167. 2024.
mla: Hanschke, L., et al. “Experimental Measurement of the Reappearance of Rabi
Rotations in Semiconductor Quantum Dots.” ArXiv:2409.19167, 2024.
short: L. Hanschke, T.K. Bracht, E. Schöll, D. Bauch, E. Berger, P. Kallert, M.
Peter, A.J. Garcia, S.F.C. da Silva, S. Manna, A. Rastelli, S. Schumacher, D.E.
Reiter, K. Jöns, ArXiv:2409.19167 (2024).
date_created: 2025-12-04T12:16:58Z
date_updated: 2025-12-11T12:54:41Z
department:
- _id: '623'
- _id: '15'
- _id: '429'
- _id: '642'
external_id:
arxiv:
- '2409.19167'
language:
- iso: eng
publication: arXiv:2409.19167
status: public
title: Experimental measurement of the reappearance of Rabi rotations in semiconductor
quantum dots
type: preprint
user_id: '48188'
year: '2024'
...
---
_id: '62856'
abstract:
- lang: eng
text: On-chip emitters that can generate single and entangled photons are essential
building blocks for developing photonic quantum information processing technologies
in a scalable fashion. Semiconductor quantum dots (QDs) are attractive candidates
that emit high-quality quantum states of light on demand, however at a rate limited
by their spontaneous radiative lifetime. In this study, we utilize the Purcell
effect to demonstrate up to a 38-fold enhancement in the emission rate of InAs
QDs by coupling them to metal-clad GaAs nanopillars. These cavities, featuring
a sub-wavelength mode volume of 4.5x10-4 (λ/n)3 and low quality factor of 62,
enable Purcell-enhanced single-photon emission across a large bandwidth of 15
nm. The broadband nature of the cavity eliminates the need for implementing tuning
mechanisms typically required to achieve QD-cavity resonance, thus relaxing fabrication
constraints. Ultimately, this QD-cavity architecture represents a significant
stride towards developing solid-state quantum emitters generating near-ideal single-photon
states at GHz-level repetition rates.
author:
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
citation:
ama: Jöns K. Purcell-enhanced single-photon emission from InAs/GaAs quantum dots
coupled to broadband cylindrical nanocavities. Published online 2024.
apa: Jöns, K. (2024). Purcell-enhanced single-photon emission from InAs/GaAs
quantum dots coupled to broadband cylindrical nanocavities.
bibtex: '@article{Jöns_2024, title={Purcell-enhanced single-photon emission from
InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities}, author={Jöns,
Klaus}, year={2024} }'
chicago: Jöns, Klaus. “Purcell-Enhanced Single-Photon Emission from InAs/GaAs Quantum
Dots Coupled to Broadband Cylindrical Nanocavities,” 2024.
ieee: K. Jöns, “Purcell-enhanced single-photon emission from InAs/GaAs quantum dots
coupled to broadband cylindrical nanocavities.” 2024.
mla: Jöns, Klaus. Purcell-Enhanced Single-Photon Emission from InAs/GaAs Quantum
Dots Coupled to Broadband Cylindrical Nanocavities. 2024.
short: K. Jöns, (2024).
date_created: 2025-12-04T12:13:39Z
date_updated: 2025-12-11T12:58:57Z
department:
- _id: '623'
- _id: '15'
- _id: '429'
- _id: '642'
language:
- iso: eng
status: public
title: Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled
to broadband cylindrical nanocavities
type: preprint
user_id: '48188'
year: '2024'
...
---
_id: '56162'
abstract:
- lang: eng
text: Die Autorinnen untersuchen im Rahmen ihrer Prä-Post-Studie mit Viertklässlern,
ob der Modellierungsprozess durch analoges Schließen zwischen mehreren Phänomenen
unterstützt werden kann, und ob chemische Konzepte zum Thema Löslichkeit erlernt
werden können. Die Ergebnisse zeigen, dass Grundschüler*innen ihre mentalen Modelle
in einem Modell ausdrücken und teilweise revidieren können. In einigen Fällen
werden die Modelle reflektiert und Grenzen erkannt. (DIPF/Orig.)
author:
- first_name: Julia
full_name: Elsner, Julia
id: '54277'
last_name: Elsner
- first_name: Claudia
full_name: Tenberge, Claudia
id: '67302'
last_name: Tenberge
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
citation:
ama: 'Elsner J, Tenberge C, Fechner S. Analyse des Modellierprozesses von Grundschüler*innen
zum Thema Löslichkeit. In: Egger C, Neureiter H, Peschel M, Goll T, eds. In
Alternativen denken - Kritik, Reflexion und Transformation im Sachunterricht.
Verlag Julius Klinkhardt; 2024:83-92. doi:10.35468/6077-08'
apa: Elsner, J., Tenberge, C., & Fechner, S. (2024). Analyse des Modellierprozesses
von Grundschüler*innen zum Thema Löslichkeit. In C. Egger, H. Neureiter, M. Peschel,
& T. Goll (Eds.), In Alternativen denken - Kritik, Reflexion und Transformation
im Sachunterricht (pp. 83–92). Verlag Julius Klinkhardt. https://doi.org/10.35468/6077-08
bibtex: '@inbook{Elsner_Tenberge_Fechner_2024, place={Bad Heilbrunn}, title={Analyse
des Modellierprozesses von Grundschüler*innen zum Thema Löslichkeit}, DOI={10.35468/6077-08}, booktitle={In Alternativen
denken - Kritik, Reflexion und Transformation im Sachunterricht}, publisher={Verlag
Julius Klinkhardt}, author={Elsner, Julia and Tenberge, Claudia and Fechner, Sabine},
editor={Egger, Christina and Neureiter, Herbert and Peschel, Markus and Goll,
Thomas}, year={2024}, pages={83–92} }'
chicago: 'Elsner, Julia, Claudia Tenberge, and Sabine Fechner. “Analyse des Modellierprozesses
von Grundschüler*innen zum Thema Löslichkeit.” In In Alternativen denken -
Kritik, Reflexion und Transformation im Sachunterricht, edited by Christina
Egger, Herbert Neureiter, Markus Peschel, and Thomas Goll, 83–92. Bad Heilbrunn:
Verlag Julius Klinkhardt, 2024. https://doi.org/10.35468/6077-08.'
ieee: 'J. Elsner, C. Tenberge, and S. Fechner, “Analyse des Modellierprozesses von
Grundschüler*innen zum Thema Löslichkeit,” in In Alternativen denken - Kritik,
Reflexion und Transformation im Sachunterricht, C. Egger, H. Neureiter, M.
Peschel, and T. Goll, Eds. Bad Heilbrunn: Verlag Julius Klinkhardt, 2024, pp.
83–92.'
mla: Elsner, Julia, et al. “Analyse des Modellierprozesses von Grundschüler*innen
zum Thema Löslichkeit.” In Alternativen denken - Kritik, Reflexion und Transformation
im Sachunterricht, edited by Christina Egger et al., Verlag Julius Klinkhardt,
2024, pp. 83–92, doi:10.35468/6077-08.
short: 'J. Elsner, C. Tenberge, S. Fechner, in: C. Egger, H. Neureiter, M. Peschel,
T. Goll (Eds.), In Alternativen denken - Kritik, Reflexion und Transformation
im Sachunterricht, Verlag Julius Klinkhardt, Bad Heilbrunn, 2024, pp. 83–92.'
date_created: 2024-09-17T09:02:26Z
date_updated: 2025-12-11T13:26:53Z
department:
- _id: '386'
- _id: '588'
- _id: '33'
doi: 10.35468/6077-08
editor:
- first_name: Christina
full_name: Egger, Christina
last_name: Egger
- first_name: Herbert
full_name: Neureiter, Herbert
last_name: Neureiter
- first_name: Markus
full_name: Peschel, Markus
last_name: Peschel
- first_name: Thomas
full_name: Goll, Thomas
last_name: Goll
language:
- iso: ger
page: 83-92
place: Bad Heilbrunn
publication: In Alternativen denken - Kritik, Reflexion und Transformation im Sachunterricht
publication_identifier:
isbn:
- '9783781526235'
publication_status: published
publisher: Verlag Julius Klinkhardt
quality_controlled: '1'
status: public
title: Analyse des Modellierprozesses von Grundschüler*innen zum Thema Löslichkeit
type: book_chapter
user_id: '54823'
year: '2024'
...
---
_id: '63048'
citation:
ama: High-throughput antibody screening with high-quality factor nanophotonics and
bioprinting. Published online 2024. doi:10.48550/ARXIV.2411.18557
apa: High-throughput antibody screening with high-quality factor nanophotonics
and bioprinting. (2024). https://doi.org/10.48550/ARXIV.2411.18557
bibtex: '@article{High-throughput antibody screening with high-quality factor nanophotonics
and bioprinting_2024, DOI={10.48550/ARXIV.2411.18557},
year={2024} }'
chicago: “High-Throughput Antibody Screening with High-Quality Factor Nanophotonics
and Bioprinting,” 2024. https://doi.org/10.48550/ARXIV.2411.18557.
ieee: '“High-throughput antibody screening with high-quality factor nanophotonics
and bioprinting,” 2024, doi: 10.48550/ARXIV.2411.18557.'
mla: High-Throughput Antibody Screening with High-Quality Factor Nanophotonics
and Bioprinting. 2024, doi:10.48550/ARXIV.2411.18557.
short: (2024).
date_created: 2025-12-11T20:41:16Z
date_updated: 2025-12-11T20:46:34Z
department:
- _id: '623'
- _id: '15'
- _id: '230'
doi: 10.48550/ARXIV.2411.18557
status: public
title: High-throughput antibody screening with high-quality factor nanophotonics and
bioprinting
type: journal_article
user_id: '112030'
year: '2024'
...
---
_id: '63047'
author:
- first_name: Nicholas Alexander
full_name: Güsken, Nicholas Alexander
id: '112030'
last_name: Güsken
orcid: 0000-0002-4816-0666
citation:
ama: Güsken NA. Schottky-barrier type infrared photodetector . Published online
2024.
apa: Güsken, N. A. (2024). Schottky-barrier type infrared photodetector .
bibtex: '@article{Güsken_2024, title={Schottky-barrier type infrared photodetector
}, author={Güsken, Nicholas Alexander}, year={2024} }'
chicago: Güsken, Nicholas Alexander. “Schottky-Barrier Type Infrared Photodetector
,” 2024.
ieee: N. A. Güsken, “Schottky-barrier type infrared photodetector .” 2024.
mla: Güsken, Nicholas Alexander. Schottky-Barrier Type Infrared Photodetector
. 2024.
short: N.A. Güsken, (2024).
date_created: 2025-12-11T20:40:43Z
date_updated: 2025-12-11T20:46:41Z
department:
- _id: '623'
- _id: '15'
- _id: '230'
ipc: US12159953B2
ipn: '12159953'
publication_date: 2024/12/3
status: public
title: 'Schottky-barrier type infrared photodetector '
type: patent
user_id: '112030'
year: '2024'
...
---
_id: '63044'
author:
- first_name: C.
full_name: Hoessbacher, C.
last_name: Hoessbacher
- first_name: B.
full_name: Baeuerle, B.
last_name: Baeuerle
- first_name: N.
full_name: Del Medico, N.
last_name: Del Medico
- first_name: E.
full_name: De Leo, E.
last_name: De Leo
- first_name: Nicholas Alexander
full_name: Güsken, Nicholas Alexander
id: '112030'
last_name: Güsken
orcid: 0000-0002-4816-0666
- first_name: W.
full_name: Heni, W.
last_name: Heni
- first_name: A.
full_name: Langenbach, A.
last_name: Langenbach
- first_name: V.
full_name: Tedaldi, V.
last_name: Tedaldi
citation:
ama: 'Hoessbacher C, Baeuerle B, Del Medico N, et al. Plasmonic modulators: bringing
a new light to silicon. IET Conference Proceedings. 2024;2023(34):1606-1608.
doi:10.1049/icp.2023.2642'
apa: 'Hoessbacher, C., Baeuerle, B., Del Medico, N., De Leo, E., Güsken, N. A.,
Heni, W., Langenbach, A., & Tedaldi, V. (2024). Plasmonic modulators: bringing
a new light to silicon. IET Conference Proceedings, 2023(34), 1606–1608.
https://doi.org/10.1049/icp.2023.2642'
bibtex: '@article{Hoessbacher_Baeuerle_Del Medico_De Leo_Güsken_Heni_Langenbach_Tedaldi_2024,
title={Plasmonic modulators: bringing a new light to silicon}, volume={2023},
DOI={10.1049/icp.2023.2642},
number={34}, journal={IET Conference Proceedings}, publisher={Institution of Engineering
and Technology (IET)}, author={Hoessbacher, C. and Baeuerle, B. and Del Medico,
N. and De Leo, E. and Güsken, Nicholas Alexander and Heni, W. and Langenbach,
A. and Tedaldi, V.}, year={2024}, pages={1606–1608} }'
chicago: 'Hoessbacher, C., B. Baeuerle, N. Del Medico, E. De Leo, Nicholas Alexander
Güsken, W. Heni, A. Langenbach, and V. Tedaldi. “Plasmonic Modulators: Bringing
a New Light to Silicon.” IET Conference Proceedings 2023, no. 34 (2024):
1606–8. https://doi.org/10.1049/icp.2023.2642.'
ieee: 'C. Hoessbacher et al., “Plasmonic modulators: bringing a new light
to silicon,” IET Conference Proceedings, vol. 2023, no. 34, pp. 1606–1608,
2024, doi: 10.1049/icp.2023.2642.'
mla: 'Hoessbacher, C., et al. “Plasmonic Modulators: Bringing a New Light to Silicon.”
IET Conference Proceedings, vol. 2023, no. 34, Institution of Engineering
and Technology (IET), 2024, pp. 1606–08, doi:10.1049/icp.2023.2642.'
short: C. Hoessbacher, B. Baeuerle, N. Del Medico, E. De Leo, N.A. Güsken, W. Heni,
A. Langenbach, V. Tedaldi, IET Conference Proceedings 2023 (2024) 1606–1608.
date_created: 2025-12-11T20:37:41Z
date_updated: 2025-12-15T11:20:43Z
department:
- _id: '623'
- _id: '15'
- _id: '230'
doi: 10.1049/icp.2023.2642
intvolume: ' 2023'
issue: '34'
language:
- iso: eng
page: 1606-1608
publication: IET Conference Proceedings
publication_identifier:
issn:
- 2732-4494
publication_status: published
publisher: Institution of Engineering and Technology (IET)
status: public
title: 'Plasmonic modulators: bringing a new light to silicon'
type: journal_article
user_id: '112030'
volume: 2023
year: '2024'
...
---
_id: '63049'
article_number: C08
author:
- first_name: Nicholas Alexander
full_name: Güsken, Nicholas Alexander
id: '112030'
last_name: Güsken
orcid: 0000-0002-4816-0666
- first_name: Mark L.
full_name: Brongersma, Mark L.
last_name: Brongersma
citation:
ama: Güsken NA, Brongersma ML. Electrifying the field of metasurface optics. Photonics
Insights. 2024;3(4). doi:10.3788/pi.2024.c08
apa: Güsken, N. A., & Brongersma, M. L. (2024). Electrifying the field of metasurface
optics. Photonics Insights, 3(4), Article C08. https://doi.org/10.3788/pi.2024.c08
bibtex: '@article{Güsken_Brongersma_2024, title={Electrifying the field of metasurface
optics}, volume={3}, DOI={10.3788/pi.2024.c08},
number={4C08}, journal={Photonics Insights}, publisher={Shanghai Institute of
Optics and Fine Mechanics}, author={Güsken, Nicholas Alexander and Brongersma,
Mark L.}, year={2024} }'
chicago: Güsken, Nicholas Alexander, and Mark L. Brongersma. “Electrifying the Field
of Metasurface Optics.” Photonics Insights 3, no. 4 (2024). https://doi.org/10.3788/pi.2024.c08.
ieee: 'N. A. Güsken and M. L. Brongersma, “Electrifying the field of metasurface
optics,” Photonics Insights, vol. 3, no. 4, Art. no. C08, 2024, doi: 10.3788/pi.2024.c08.'
mla: Güsken, Nicholas Alexander, and Mark L. Brongersma. “Electrifying the Field
of Metasurface Optics.” Photonics Insights, vol. 3, no. 4, C08, Shanghai
Institute of Optics and Fine Mechanics, 2024, doi:10.3788/pi.2024.c08.
short: N.A. Güsken, M.L. Brongersma, Photonics Insights 3 (2024).
date_created: 2025-12-11T20:41:41Z
date_updated: 2025-12-15T11:21:46Z
department:
- _id: '623'
- _id: '15'
- _id: '230'
doi: 10.3788/pi.2024.c08
intvolume: ' 3'
issue: '4'
language:
- iso: eng
publication: Photonics Insights
publication_identifier:
issn:
- 2791-1748
publication_status: published
publisher: Shanghai Institute of Optics and Fine Mechanics
status: public
title: Electrifying the field of metasurface optics
type: journal_article
user_id: '112030'
volume: 3
year: '2024'
...
---
_id: '53202'
abstract:
- lang: eng
text: At large scales, quantum systems may become advantageous over their classical
counterparts at performing certain tasks. Developing tools to analyze these systems
at the relevant scales, in a manner consistent with quantum mechanics, is therefore
critical to benchmarking performance and characterizing their operation. While
classical computational approaches cannot perform like-for-like computations of
quantum systems beyond a certain scale, classical high-performance computing (HPC)
may nevertheless be useful for precisely these characterization and certification
tasks. By developing open-source customized algorithms using high-performance
computing, we perform quantum tomography on a megascale quantum photonic detector
covering a Hilbert space of 106. This requires finding 108 elements of the matrix
corresponding to the positive operator valued measure (POVM), the quantum description
of the detector, and is achieved in minutes of computation time. Moreover, by
exploiting the structure of the problem, we achieve highly efficient parallel
scaling, paving the way for quantum objects up to a system size of 1012 elements
to be reconstructed using this method. In general, this shows that a consistent
quantum mechanical description of quantum phenomena is applicable at everyday
scales. More concretely, this enables the reconstruction of large-scale quantum
sources, processes and detectors used in computation and sampling tasks, which
may be necessary to prove their nonclassical character or quantum computational
advantage.
author:
- first_name: Timon
full_name: Schapeler, Timon
id: '55629'
last_name: Schapeler
orcid: 0000-0001-7652-1716
- first_name: Robert
full_name: Schade, Robert
id: '75963'
last_name: Schade
orcid: 0000-0002-6268-5397
- 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
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: Schapeler T, Schade R, Lass M, Plessl C, Bartley T. Scalable quantum detector
tomography by high-performance computing. Quantum Science and Technology.
2024;10(1). doi:10.1088/2058-9565/ad8511
apa: Schapeler, T., Schade, R., Lass, M., Plessl, C., & Bartley, T. (2024).
Scalable quantum detector tomography by high-performance computing. Quantum
Science and Technology, 10(1). https://doi.org/10.1088/2058-9565/ad8511
bibtex: '@article{Schapeler_Schade_Lass_Plessl_Bartley_2024, title={Scalable quantum
detector tomography by high-performance computing}, volume={10}, DOI={10.1088/2058-9565/ad8511},
number={1}, journal={Quantum Science and Technology}, publisher={IOP Publishing},
author={Schapeler, Timon and Schade, Robert and Lass, Michael and Plessl, Christian
and Bartley, Tim}, year={2024} }'
chicago: Schapeler, Timon, Robert Schade, Michael Lass, Christian Plessl, and Tim
Bartley. “Scalable Quantum Detector Tomography by High-Performance Computing.”
Quantum Science and Technology 10, no. 1 (2024). https://doi.org/10.1088/2058-9565/ad8511.
ieee: 'T. Schapeler, R. Schade, M. Lass, C. Plessl, and T. Bartley, “Scalable quantum
detector tomography by high-performance computing,” Quantum Science and Technology,
vol. 10, no. 1, 2024, doi: 10.1088/2058-9565/ad8511.'
mla: Schapeler, Timon, et al. “Scalable Quantum Detector Tomography by High-Performance
Computing.” Quantum Science and Technology, vol. 10, no. 1, IOP Publishing,
2024, doi:10.1088/2058-9565/ad8511.
short: T. Schapeler, R. Schade, M. Lass, C. Plessl, T. Bartley, Quantum Science
and Technology 10 (2024).
date_created: 2024-04-04T08:43:18Z
date_updated: 2025-12-16T11:32:12Z
department:
- _id: '27'
- _id: '623'
- _id: '15'
doi: 10.1088/2058-9565/ad8511
external_id:
arxiv:
- '2404.02844'
intvolume: ' 10'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '239'
name: 'ERC-Grant: QuESADILLA: Quantum Engineering Superconducting Array Detectors
in Low-Light Applications'
- _id: '191'
name: 'PhoQuant: Photonische Quantencomputer - Quantencomputing Testplattform'
publication: Quantum Science and Technology
publisher: IOP Publishing
status: public
title: Scalable quantum detector tomography by high-performance computing
type: journal_article
user_id: '55629'
volume: 10
year: '2024'
...