---
_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: '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: '46573'
abstract:
- lang: eng
text: 'An ultra-fast change of the absorption onset for zincblende gallium-nitride
(zb-GaN) (fundamental bandgap: 3.23 eV) is observed by investigating the imaginary
part of the dielectric function using time-dependent femtosecond pump–probe spectroscopic
ellipsometry between 2.9 and 3.7 eV. The 266 nm (4.66 eV) pump pulses induce a
large electron–hole pair concentration up to 4×1020cm−3, which shift the transition
energy between conduction and valence bands due to many-body effects up to ≈500 meV.
Here, the absorption onset increases due to band filling while the bandgap renormalization
at the same time decreases the bandgap. Additionally, the absorption of the pump-beam
creates a free-carrier profile within the 605 nm zb-GaN layer with high free-carrier
concentrations at the surface, and low concentrations at the interface to the
substrate. This leads to varying optical properties from the sample surface (high
transition energy) to substrate (low transition energy), which are taken into
account by grading analysis for an accurate description of the experimental data.
For this, a model describing the time- and position-dependent free-carrier concentration
is formulated by considering the relaxation, recombination, and diffusion of those
carriers. We provide a quantitative analysis of optical experimental data (ellipsometric
angles Ψ and Δ) as well as a plot for the time-dependent change of the imaginary
part of the dielectric function.'
author:
- first_name: Elias
full_name: Baron, Elias
last_name: Baron
- first_name: Rüdiger
full_name: Goldhahn, Rüdiger
last_name: Goldhahn
- first_name: Shirly
full_name: Espinoza, Shirly
last_name: Espinoza
- first_name: Martin
full_name: Zahradník, Martin
last_name: Zahradník
- first_name: Mateusz
full_name: Rebarz, Mateusz
last_name: Rebarz
- first_name: Jakob
full_name: Andreasson, Jakob
last_name: Andreasson
- first_name: Michael
full_name: Deppe, Michael
last_name: Deppe
- first_name: Donat Josef
full_name: As, Donat Josef
id: '14'
last_name: As
orcid: 0000-0003-1121-3565
- first_name: Martin
full_name: Feneberg, Martin
last_name: Feneberg
citation:
ama: Baron E, Goldhahn R, Espinoza S, et al. Time-resolved pump–probe spectroscopic
ellipsometry of cubic GaN. I. Determination of the dielectric function. Journal
of Applied Physics. 2023;134(7). doi:10.1063/5.0153091
apa: Baron, E., Goldhahn, R., Espinoza, S., Zahradník, M., Rebarz, M., Andreasson,
J., Deppe, M., As, D. J., & Feneberg, M. (2023). Time-resolved pump–probe
spectroscopic ellipsometry of cubic GaN. I. Determination of the dielectric function.
Journal of Applied Physics, 134(7). https://doi.org/10.1063/5.0153091
bibtex: '@article{Baron_Goldhahn_Espinoza_Zahradník_Rebarz_Andreasson_Deppe_As_Feneberg_2023,
title={Time-resolved pump–probe spectroscopic ellipsometry of cubic GaN. I. Determination
of the dielectric function}, volume={134}, DOI={10.1063/5.0153091},
number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing},
author={Baron, Elias and Goldhahn, Rüdiger and Espinoza, Shirly and Zahradník,
Martin and Rebarz, Mateusz and Andreasson, Jakob and Deppe, Michael and As, Donat
Josef and Feneberg, Martin}, year={2023} }'
chicago: Baron, Elias, Rüdiger Goldhahn, Shirly Espinoza, Martin Zahradník, Mateusz
Rebarz, Jakob Andreasson, Michael Deppe, Donat Josef As, and Martin Feneberg.
“Time-Resolved Pump–Probe Spectroscopic Ellipsometry of Cubic GaN. I. Determination
of the Dielectric Function.” Journal of Applied Physics 134, no. 7 (2023).
https://doi.org/10.1063/5.0153091.
ieee: 'E. Baron et al., “Time-resolved pump–probe spectroscopic ellipsometry
of cubic GaN. I. Determination of the dielectric function,” Journal of Applied
Physics, vol. 134, no. 7, 2023, doi: 10.1063/5.0153091.'
mla: Baron, Elias, et al. “Time-Resolved Pump–Probe Spectroscopic Ellipsometry of
Cubic GaN. I. Determination of the Dielectric Function.” Journal of Applied
Physics, vol. 134, no. 7, AIP Publishing, 2023, doi:10.1063/5.0153091.
short: E. Baron, R. Goldhahn, S. Espinoza, M. Zahradník, M. Rebarz, J. Andreasson,
M. Deppe, D.J. As, M. Feneberg, Journal of Applied Physics 134 (2023).
date_created: 2023-08-18T08:17:41Z
date_updated: 2023-10-09T09:17:15Z
department:
- _id: '15'
- _id: '230'
doi: 10.1063/5.0153091
intvolume: ' 134'
issue: '7'
keyword:
- General Physics and Astronomy
language:
- iso: eng
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
publisher: AIP Publishing
status: public
title: Time-resolved pump–probe spectroscopic ellipsometry of cubic GaN. I. Determination
of the dielectric function
type: journal_article
user_id: '14931'
volume: 134
year: '2023'
...
---
_id: '49117'
article_number: '043158'
author:
- first_name: D.
full_name: Scharwald, D.
last_name: Scharwald
- first_name: T.
full_name: Meier, T.
last_name: Meier
- first_name: P. R.
full_name: Sharapova, P. R.
last_name: Sharapova
citation:
ama: Scharwald D, Meier T, Sharapova PR. Phase sensitivity of spatially broadband
high-gain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>SU</mml:mi><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>
interferometers. Physical Review Research. 2023;5(4). doi:10.1103/physrevresearch.5.043158
apa: Scharwald, D., Meier, T., & Sharapova, P. R. (2023). Phase sensitivity
of spatially broadband high-gain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>SU</mml:mi><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>
interferometers. Physical Review Research, 5(4), Article 043158.
https://doi.org/10.1103/physrevresearch.5.043158
bibtex: '@article{Scharwald_Meier_Sharapova_2023, title={Phase sensitivity of spatially
broadband high-gain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>SU</mml:mi><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>
interferometers}, volume={5}, DOI={10.1103/physrevresearch.5.043158},
number={4043158}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Scharwald, D. and Meier, T. and Sharapova, P. R.}, year={2023}
}'
chicago: Scharwald, D., T. Meier, and P. R. Sharapova. “Phase Sensitivity of Spatially
Broadband High-Gain <mml:Math Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML"><mml:Mrow><mml:Mi>SU</Mml:Mi><mml:Mo>(</Mml:Mo><mml:Mn>1</Mml:Mn><mml:Mo>,</Mml:Mo><mml:Mn>1</Mml:Mn><mml:Mo>)</Mml:Mo></Mml:Mrow></Mml:Math>
Interferometers.” Physical Review Research 5, no. 4 (2023). https://doi.org/10.1103/physrevresearch.5.043158.
ieee: 'D. Scharwald, T. Meier, and P. R. Sharapova, “Phase sensitivity of spatially
broadband high-gain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>SU</mml:mi><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>
interferometers,” Physical Review Research, vol. 5, no. 4, Art. no. 043158,
2023, doi: 10.1103/physrevresearch.5.043158.'
mla: Scharwald, D., et al. “Phase Sensitivity of Spatially Broadband High-Gain <mml:Math
Xmlns:Mml="http://Www.W3.Org/1998/Math/MathML"><mml:Mrow><mml:Mi>SU</Mml:Mi><mml:Mo>(</Mml:Mo><mml:Mn>1</Mml:Mn><mml:Mo>,</Mml:Mo><mml:Mn>1</Mml:Mn><mml:Mo>)</Mml:Mo></Mml:Mrow></Mml:Math>
Interferometers.” Physical Review Research, vol. 5, no. 4, 043158, American
Physical Society (APS), 2023, doi:10.1103/physrevresearch.5.043158.
short: D. Scharwald, T. Meier, P.R. Sharapova, Physical Review Research 5 (2023).
date_created: 2023-11-22T09:18:02Z
date_updated: 2023-11-22T09:19:02Z
department:
- _id: '15'
- _id: '170'
- _id: '230'
- _id: '569'
- _id: '429'
doi: 10.1103/physrevresearch.5.043158
intvolume: ' 5'
issue: '4'
keyword:
- General Physics and Astronomy
language:
- iso: eng
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Phase sensitivity of spatially broadband high-gain SU(1,1)
interferometers
type: journal_article
user_id: '60286'
volume: 5
year: '2023'
...
---
_id: '49609'
abstract:
- lang: eng
text: The alignment of liquid crystals on surfaces plays a central role
in optimizing their performances. In this work, a cutting-edge nano-lithography-based
method to control the local orientation of a thermotropic liquid crystal is applied
to easily available commercial standard materials and evaluated. Parallel nanogrooves
on a substrate, created through 3D nanoprinting in a negative-tone photoresin
optimized for two-photon polymerization are used for this purpose. Azimuthal anchoring
energies of the order from 10−6 J/m2
to 10−5 J/m2 are found, depending on
the spacing, width and depth of the grooves. In part, these values are larger
than those reported previously for another photopolymer. Both uniform alignment
and spatial patterns of different alignment directions can be realized. Electro-optic
studies confirm the suitability of the method for electrically addressable photonic
applications and indicate strong polar anchoring.
article_number: '3467'
author:
- first_name: Bingru
full_name: Zhang, Bingru
last_name: Zhang
- first_name: Malte
full_name: Plidschun, Malte
last_name: Plidschun
- first_name: Markus A.
full_name: Schmidt, Markus A.
last_name: Schmidt
- first_name: Heinz-Siegfried
full_name: Kitzerow, Heinz-Siegfried
id: '254'
last_name: Kitzerow
citation:
ama: Zhang B, Plidschun M, Schmidt MA, Kitzerow H-S. Anchoring and electro-optic
switching of liquid crystals on nano-structured surfaces fabricated by two-photon
based nano-printing. Optical Materials Express. 2023;13(12). doi:10.1364/ome.503100
apa: Zhang, B., Plidschun, M., Schmidt, M. A., & Kitzerow, H.-S. (2023). Anchoring
and electro-optic switching of liquid crystals on nano-structured surfaces fabricated
by two-photon based nano-printing. Optical Materials Express, 13(12),
Article 3467. https://doi.org/10.1364/ome.503100
bibtex: '@article{Zhang_Plidschun_Schmidt_Kitzerow_2023, title={Anchoring and electro-optic
switching of liquid crystals on nano-structured surfaces fabricated by two-photon
based nano-printing}, volume={13}, DOI={10.1364/ome.503100},
number={123467}, journal={Optical Materials Express}, publisher={Optica Publishing
Group}, author={Zhang, Bingru and Plidschun, Malte and Schmidt, Markus A. and
Kitzerow, Heinz-Siegfried}, year={2023} }'
chicago: Zhang, Bingru, Malte Plidschun, Markus A. Schmidt, and Heinz-Siegfried
Kitzerow. “Anchoring and Electro-Optic Switching of Liquid Crystals on Nano-Structured
Surfaces Fabricated by Two-Photon Based Nano-Printing.” Optical Materials Express
13, no. 12 (2023). https://doi.org/10.1364/ome.503100.
ieee: 'B. Zhang, M. Plidschun, M. A. Schmidt, and H.-S. Kitzerow, “Anchoring and
electro-optic switching of liquid crystals on nano-structured surfaces fabricated
by two-photon based nano-printing,” Optical Materials Express, vol. 13,
no. 12, Art. no. 3467, 2023, doi: 10.1364/ome.503100.'
mla: Zhang, Bingru, et al. “Anchoring and Electro-Optic Switching of Liquid Crystals
on Nano-Structured Surfaces Fabricated by Two-Photon Based Nano-Printing.” Optical
Materials Express, vol. 13, no. 12, 3467, Optica Publishing Group, 2023, doi:10.1364/ome.503100.
short: B. Zhang, M. Plidschun, M.A. Schmidt, H.-S. Kitzerow, Optical Materials Express
13 (2023).
date_created: 2023-12-13T15:59:37Z
date_updated: 2023-12-13T16:06:29Z
department:
- _id: '313'
- _id: '230'
- _id: '35'
doi: 10.1364/ome.503100
intvolume: ' 13'
issue: '12'
keyword:
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
publication: Optical Materials Express
publication_identifier:
issn:
- 2159-3930
publication_status: published
publisher: Optica Publishing Group
status: public
title: Anchoring and electro-optic switching of liquid crystals on nano-structured
surfaces fabricated by two-photon based nano-printing
type: journal_article
user_id: '254'
volume: 13
year: '2023'
...
---
_id: '43440'
author:
- first_name: Bingru
full_name: Zhang, Bingru
last_name: Zhang
- first_name: Linh
full_name: Nguyen, Linh
last_name: Nguyen
- first_name: Kevin
full_name: Martens, Kevin
last_name: Martens
- first_name: Amelie
full_name: Heuer-Jungemann, Amelie
last_name: Heuer-Jungemann
- first_name: Julian
full_name: Philipp, Julian
last_name: Philipp
- first_name: Susanne
full_name: Kempter, Susanne
last_name: Kempter
- first_name: Joachim O.
full_name: Rädler, Joachim O.
last_name: Rädler
- first_name: Tim
full_name: Liedl, Tim
last_name: Liedl
- first_name: Heinz-Siegfried
full_name: Kitzerow, Heinz-Siegfried
id: '254'
last_name: Kitzerow
citation:
ama: Zhang B, Nguyen L, Martens K, et al. Luminescent DNA-origami nano-rods dispersed
in a lyotropic chromonic liquid crystal. Liquid Crystals. 2023;50(7-10):1243-1251.
doi:10.1080/02678292.2023.2188494
apa: Zhang, B., Nguyen, L., Martens, K., Heuer-Jungemann, A., Philipp, J., Kempter,
S., Rädler, J. O., Liedl, T., & Kitzerow, H.-S. (2023). Luminescent DNA-origami
nano-rods dispersed in a lyotropic chromonic liquid crystal. Liquid Crystals,
50(7–10), 1243–1251. https://doi.org/10.1080/02678292.2023.2188494
bibtex: '@article{Zhang_Nguyen_Martens_Heuer-Jungemann_Philipp_Kempter_Rädler_Liedl_Kitzerow_2023,
title={Luminescent DNA-origami nano-rods dispersed in a lyotropic chromonic liquid
crystal}, volume={50}, DOI={10.1080/02678292.2023.2188494},
number={7–10}, journal={Liquid Crystals}, publisher={Informa UK Limited}, author={Zhang,
Bingru and Nguyen, Linh and Martens, Kevin and Heuer-Jungemann, Amelie and Philipp,
Julian and Kempter, Susanne and Rädler, Joachim O. and Liedl, Tim and Kitzerow,
Heinz-Siegfried}, year={2023}, pages={1243–1251} }'
chicago: 'Zhang, Bingru, Linh Nguyen, Kevin Martens, Amelie Heuer-Jungemann, Julian
Philipp, Susanne Kempter, Joachim O. Rädler, Tim Liedl, and Heinz-Siegfried Kitzerow.
“Luminescent DNA-Origami Nano-Rods Dispersed in a Lyotropic Chromonic Liquid Crystal.”
Liquid Crystals 50, no. 7–10 (2023): 1243–51. https://doi.org/10.1080/02678292.2023.2188494.'
ieee: 'B. Zhang et al., “Luminescent DNA-origami nano-rods dispersed in a
lyotropic chromonic liquid crystal,” Liquid Crystals, vol. 50, no. 7–10,
pp. 1243–1251, 2023, doi: 10.1080/02678292.2023.2188494.'
mla: Zhang, Bingru, et al. “Luminescent DNA-Origami Nano-Rods Dispersed in a Lyotropic
Chromonic Liquid Crystal.” Liquid Crystals, vol. 50, no. 7–10, Informa
UK Limited, 2023, pp. 1243–51, doi:10.1080/02678292.2023.2188494.
short: B. Zhang, L. Nguyen, K. Martens, A. Heuer-Jungemann, J. Philipp, S. Kempter,
J.O. Rädler, T. Liedl, H.-S. Kitzerow, Liquid Crystals 50 (2023) 1243–1251.
date_created: 2023-04-08T17:21:30Z
date_updated: 2023-12-13T15:54:31Z
department:
- _id: '313'
- _id: '230'
doi: 10.1080/02678292.2023.2188494
intvolume: ' 50'
issue: 7-10
keyword:
- Condensed Matter Physics
- General Materials Science
- General Chemistry
language:
- iso: eng
page: 1243-1251
publication: Liquid Crystals
publication_identifier:
issn:
- 0267-8292
- 1366-5855
publication_status: published
publisher: Informa UK Limited
status: public
title: Luminescent DNA-origami nano-rods dispersed in a lyotropic chromonic liquid
crystal
type: journal_article
user_id: '254'
volume: 50
year: '2023'
...
---
_id: '48599'
abstract:
- lang: eng
text: AbstractThe biexciton‐exciton emission cascade
commonly used in quantum‐dot systems to generate polarization entanglement yields
photons with intrinsically limited indistinguishability. In the present work,
it focuses on the generation of pairs of photons with high degrees of polarization
entanglement and simultaneously high indistinguishability. It achieves this goal
by selectively reducing the biexciton lifetime with an optical resonator. It demonstrates
that a suitably tailored circular Bragg reflector fulfills the requirements of
sufficient selective Purcell enhancement of biexciton emission paired with spectrally
broad photon extraction and twofold degenerate optical modes. The in‐depth theoretical
study combines (i) the optimization of realistic photonic structures solving Maxwell's
equations from which model parameters are extracted as input for (ii) microscopic
simulations of quantum‐dot cavity excitation dynamics with full access to photon
properties. It reports non‐trivial dependencies on system parameters and use the
predictive power of the combined theoretical approach to determine the optimal
range of Purcell enhancement that maximizes indistinguishability and entanglement
to near unity values, here specifically for the telecom C‐band at 1550 nm.
author:
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Dustin
full_name: Siebert, Dustin
last_name: Siebert
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On‐Demand Indistinguishable
and Entangled Photons Using Tailored Cavity Designs. Advanced Quantum Technologies.
Published online 2023. doi:10.1002/qute.202300142
apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., & Schumacher, S. (2023).
On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.
Advanced Quantum Technologies. https://doi.org/10.1002/qute.202300142
bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On‐Demand
Indistinguishable and Entangled Photons Using Tailored Cavity Designs}, DOI={10.1002/qute.202300142}, journal={Advanced
Quantum Technologies}, publisher={Wiley}, author={Bauch, David and Siebert, Dustin
and Jöns, Klaus and Förstner, Jens and Schumacher, Stefan}, year={2023} }'
chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher.
“On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs.”
Advanced Quantum Technologies, 2023. https://doi.org/10.1002/qute.202300142.
ieee: 'D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On‐Demand
Indistinguishable and Entangled Photons Using Tailored Cavity Designs,” Advanced
Quantum Technologies, 2023, doi: 10.1002/qute.202300142.'
mla: Bauch, David, et al. “On‐Demand Indistinguishable and Entangled Photons Using
Tailored Cavity Designs.” Advanced Quantum Technologies, Wiley, 2023, doi:10.1002/qute.202300142.
short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, Advanced Quantum
Technologies (2023).
date_created: 2023-11-03T10:07:38Z
date_updated: 2023-12-21T10:41:17Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
doi: 10.1002/qute.202300142
keyword:
- tet_topic_qd
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://onlinelibrary.wiley.com/doi/10.1002/qute.202300142
oa: '1'
project:
- _id: '173'
grant_number: '231447078'
name: 'TRR 142 - C09: TRR 142 - Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch
bei Telekom Wellenlängen (C09*)'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
eines photonischen Quantensystems (B06*)'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Advanced Quantum Technologies
publication_identifier:
issn:
- 2511-9044
- 2511-9044
publication_status: published
publisher: Wiley
related_material:
record:
- id: '43246'
relation: earlier_version
status: public
status: public
title: On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs
type: journal_article
user_id: '158'
year: '2023'
...
---
_id: '43246'
abstract:
- lang: eng
text: The biexciton-exciton emission cascade commonly used in quantum-dot systems
to generate polarization entanglement yields photons with intrinsically limited
indistinguishability. In the present work we focus on the generation of pairs
of photons with high degrees of polarization entanglement and simultaneously high
indistinguishibility. We achieve this goal by selectively reducing the biexciton
lifetime with an optical resonator. We demonstrate that a suitably tailored circular
Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement
of biexciton emission paired with spectrally broad photon extraction and two-fold
degenerate optical modes. Our in-depth theoretical study combines (i) the optimization
of realistic photonic structures solving Maxwell's equations from which model
parameters are extracted as input for (ii) microscopic simulations of quantum-dot
cavity excitation dynamics with full access to photon properties. We report non-trivial
dependencies on system parameters and use the predictive power of our combined
theoretical approach to determine the optimal range of Purcell enhancement that
maximizes indistinguishability and entanglement to near unity values in the telecom
C-band at $1550\,\mathrm{nm}$.
author:
- first_name: David
full_name: Bauch, David
last_name: Bauch
- first_name: Dustin
full_name: Siebert, Dustin
last_name: Siebert
- first_name: Klaus
full_name: Jöns, Klaus
id: '85353'
last_name: Jöns
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Bauch D, Siebert D, Jöns K, Förstner J, Schumacher S. On-demand indistinguishable
and entangled photons at telecom frequencies using tailored cavity designs. Published
online 2023.
apa: Bauch, D., Siebert, D., Jöns, K., Förstner, J., & Schumacher, S. (2023).
On-demand indistinguishable and entangled photons at telecom frequencies using
tailored cavity designs.
bibtex: '@article{Bauch_Siebert_Jöns_Förstner_Schumacher_2023, title={On-demand
indistinguishable and entangled photons at telecom frequencies using tailored
cavity designs}, author={Bauch, David and Siebert, Dustin and Jöns, Klaus and
Förstner, Jens and Schumacher, Stefan}, year={2023} }'
chicago: Bauch, David, Dustin Siebert, Klaus Jöns, Jens Förstner, and Stefan Schumacher.
“On-Demand Indistinguishable and Entangled Photons at Telecom Frequencies Using
Tailored Cavity Designs,” 2023.
ieee: D. Bauch, D. Siebert, K. Jöns, J. Förstner, and S. Schumacher, “On-demand
indistinguishable and entangled photons at telecom frequencies using tailored
cavity designs.” 2023.
mla: Bauch, David, et al. On-Demand Indistinguishable and Entangled Photons at
Telecom Frequencies Using Tailored Cavity Designs. 2023.
short: D. Bauch, D. Siebert, K. Jöns, J. Förstner, S. Schumacher, (2023).
date_created: 2023-03-31T13:22:05Z
date_updated: 2023-12-21T10:41:17Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '623'
- _id: '15'
- _id: '35'
- _id: '170'
- _id: '297'
keyword:
- tet_topic_phc
- tet_topic_qd
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/pdf/2303.13871.pdf
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '173'
grant_number: '231447078'
name: 'TRR 142 - C09: TRR 142 - Subproject C09'
- _id: '167'
grant_number: '231447078'
name: 'TRR 142 - B06: TRR 142 - Subproject B06'
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
related_material:
record:
- id: '48599'
relation: later_version
status: public
status: public
title: On-demand indistinguishable and entangled photons at telecom frequencies using
tailored cavity designs
type: preprint
user_id: '16199'
year: '2023'
...
---
_id: '52122'
article_number: '043152'
author:
- first_name: Usman
full_name: Ali, Usman
last_name: Ali
- first_name: Martin
full_name: Holthaus, Martin
last_name: Holthaus
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: Ali U, Holthaus M, Meier T. Chirped Bloch-harmonic oscillations in a parametrically
forced optical lattice. Physical Review Research. 2023;5(4). doi:10.1103/physrevresearch.5.043152
apa: Ali, U., Holthaus, M., & Meier, T. (2023). Chirped Bloch-harmonic oscillations
in a parametrically forced optical lattice. Physical Review Research, 5(4),
Article 043152. https://doi.org/10.1103/physrevresearch.5.043152
bibtex: '@article{Ali_Holthaus_Meier_2023, title={Chirped Bloch-harmonic oscillations
in a parametrically forced optical lattice}, volume={5}, DOI={10.1103/physrevresearch.5.043152},
number={4043152}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Ali, Usman and Holthaus, Martin and Meier, Torsten}, year={2023}
}'
chicago: Ali, Usman, Martin Holthaus, and Torsten Meier. “Chirped Bloch-Harmonic
Oscillations in a Parametrically Forced Optical Lattice.” Physical Review Research
5, no. 4 (2023). https://doi.org/10.1103/physrevresearch.5.043152.
ieee: 'U. Ali, M. Holthaus, and T. Meier, “Chirped Bloch-harmonic oscillations in
a parametrically forced optical lattice,” Physical Review Research, vol.
5, no. 4, Art. no. 043152, 2023, doi: 10.1103/physrevresearch.5.043152.'
mla: Ali, Usman, et al. “Chirped Bloch-Harmonic Oscillations in a Parametrically
Forced Optical Lattice.” Physical Review Research, vol. 5, no. 4, 043152,
American Physical Society (APS), 2023, doi:10.1103/physrevresearch.5.043152.
short: U. Ali, M. Holthaus, T. Meier, Physical Review Research 5 (2023).
date_created: 2024-02-27T13:57:01Z
date_updated: 2024-02-28T12:53:40Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
doi: 10.1103/physrevresearch.5.043152
intvolume: ' 5'
issue: '4'
keyword:
- General Physics and Astronomy
language:
- iso: eng
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Chirped Bloch-harmonic oscillations in a parametrically forced optical lattice
type: journal_article
user_id: '16199'
volume: 5
year: '2023'
...