---
_id: '65094'
abstract:
- lang: eng
text: "\r\n The development of practical sensors for
optical coherence tomography (OCT) with undetected photons requires miniaturization
via integration. To be practical, these sensors must exhibit a large spectral
bandwidth and a high brightness, which are linked to a high axial resolution and
a sufficient signal-to-noise ratio, respectively. Here, we combine these requirements
in a scheme for OCT measurements with undetected photons based on nonlinear\r\n
\ \r\n
\ Ti\r\n :\r\n
\ \r\n \r\n Li\r\n
\ Nb\r\n O\r\n
\ \r\n 3\r\n
\ \r\n \r\n waveguides.
We investigate the performance benchmarks of the commonly used SU(1,1) scheme
in comparison to an induced-coherence scheme and find that the latter is actually
better suited when implementing measurements with undetected photons in integrated
systems. In both schemes, we perform pump-gain optimization and OCT measurements
with undetected photons with an axial resolution as low as\r\n \r\n 28\r\n
\ \r\n μ\r\n \r\n m\r\n \r\n \r\n
\ .\r\n "
article_number: '034031'
author:
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: René
full_name: Pollmann, René
id: '78890'
last_name: Pollmann
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Roeder F, Pollmann R, Quiring V, Eigner C, Brecht B, Silberhorn C. Toward integrated
sensors for optimized optical coherence tomography with undetected photons. Physical
Review Applied. 2026;25(3). doi:10.1103/cwsx-42c4
apa: Roeder, F., Pollmann, R., Quiring, V., Eigner, C., Brecht, B., & Silberhorn,
C. (2026). Toward integrated sensors for optimized optical coherence tomography
with undetected photons. Physical Review Applied, 25(3), Article
034031. https://doi.org/10.1103/cwsx-42c4
bibtex: '@article{Roeder_Pollmann_Quiring_Eigner_Brecht_Silberhorn_2026, title={Toward
integrated sensors for optimized optical coherence tomography with undetected
photons}, volume={25}, DOI={10.1103/cwsx-42c4},
number={3034031}, journal={Physical Review Applied}, publisher={American Physical
Society (APS)}, author={Roeder, Franz and Pollmann, René and Quiring, Viktor and
Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2026}
}'
chicago: Roeder, Franz, René Pollmann, Viktor Quiring, Christof Eigner, Benjamin
Brecht, and Christine Silberhorn. “Toward Integrated Sensors for Optimized Optical
Coherence Tomography with Undetected Photons.” Physical Review Applied
25, no. 3 (2026). https://doi.org/10.1103/cwsx-42c4.
ieee: 'F. Roeder, R. Pollmann, V. Quiring, C. Eigner, B. Brecht, and C. Silberhorn,
“Toward integrated sensors for optimized optical coherence tomography with undetected
photons,” Physical Review Applied, vol. 25, no. 3, Art. no. 034031, 2026,
doi: 10.1103/cwsx-42c4.'
mla: Roeder, Franz, et al. “Toward Integrated Sensors for Optimized Optical Coherence
Tomography with Undetected Photons.” Physical Review Applied, vol. 25,
no. 3, 034031, American Physical Society (APS), 2026, doi:10.1103/cwsx-42c4.
short: F. Roeder, R. Pollmann, V. Quiring, C. Eigner, B. Brecht, C. Silberhorn,
Physical Review Applied 25 (2026).
date_created: 2026-03-23T12:28:33Z
date_updated: 2026-03-25T07:59:04Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1103/cwsx-42c4
intvolume: ' 25'
issue: '3'
language:
- iso: eng
publication: Physical Review Applied
publication_identifier:
issn:
- 2331-7019
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Toward integrated sensors for optimized optical coherence tomography with undetected
photons
type: journal_article
user_id: '27150'
volume: 25
year: '2026'
...
---
_id: '59276'
abstract:
- lang: eng
text: Stress plays a crucial role in thin films and layered systems, and thus significantly
influences the material's electrical, mechanical and (nonlinear) optical responses.
Despite lithium niobate's wide applicability as a nonlinear optical material,
the impact of mechanical stress on its nonlinear optical properties is not well
characterized. In this work, we systematically study both experimentally and theoretically,
the nonlinear optical responses of thin film lithium niobate (TFLN) single crystals.
Compressive and tensile stress is applied in our experiment using a piezodriven
strain cell. We then record the second-harmonic-generated (SHG) response in back-reflection
geometry, and compare these results to theoretical modeling using density functional
theory (DFT). Both methods consistently reveal that uniaxial stress induces changes
of the nonlinear optical susceptibility of certain tensor elements on the order
of up to 1 pm/(V GPa). The exact value depends on the tensor element that is addressed
in our SHG analysis, on the crystal orientation, and also whether using compressive
or tensile stresses. Furthermore, a lowering of the crystal symmetry when applying
stress along the x
or y
crystallographic axes is observed by the appearance of new nonlinear optical tensor
elements within the strained crystals.
article_number: '064109'
author:
- first_name: Mike N.
full_name: Pionteck, Mike N.
last_name: Pionteck
- first_name: Matthias
full_name: Roeper, Matthias
last_name: Roeper
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Samuel D.
full_name: Seddon, Samuel D.
last_name: Seddon
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Simone
full_name: Sanna, Simone
last_name: Sanna
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: Pionteck MN, Roeper M, Koppitz B, et al. Second-order nonlinear piezo-optic
properties of single crystal lithium niobate thin films. Physical Review B.
2025;111(6). doi:10.1103/physrevb.111.064109
apa: Pionteck, M. N., Roeper, M., Koppitz, B., Seddon, S. D., Rüsing, M., Padberg,
L., Eigner, C., Silberhorn, C., Sanna, S., & Eng, L. M. (2025). Second-order
nonlinear piezo-optic properties of single crystal lithium niobate thin films.
Physical Review B, 111(6), Article 064109. https://doi.org/10.1103/physrevb.111.064109
bibtex: '@article{Pionteck_Roeper_Koppitz_Seddon_Rüsing_Padberg_Eigner_Silberhorn_Sanna_Eng_2025,
title={Second-order nonlinear piezo-optic properties of single crystal lithium
niobate thin films}, volume={111}, DOI={10.1103/physrevb.111.064109},
number={6064109}, journal={Physical Review B}, publisher={American Physical Society
(APS)}, author={Pionteck, Mike N. and Roeper, Matthias and Koppitz, Boris and
Seddon, Samuel D. and Rüsing, Michael and Padberg, Laura and Eigner, Christof
and Silberhorn, Christine and Sanna, Simone and Eng, Lukas M.}, year={2025} }'
chicago: Pionteck, Mike N., Matthias Roeper, Boris Koppitz, Samuel D. Seddon, Michael
Rüsing, Laura Padberg, Christof Eigner, Christine Silberhorn, Simone Sanna, and
Lukas M. Eng. “Second-Order Nonlinear Piezo-Optic Properties of Single Crystal
Lithium Niobate Thin Films.” Physical Review B 111, no. 6 (2025). https://doi.org/10.1103/physrevb.111.064109.
ieee: 'M. N. Pionteck et al., “Second-order nonlinear piezo-optic properties
of single crystal lithium niobate thin films,” Physical Review B, vol.
111, no. 6, Art. no. 064109, 2025, doi: 10.1103/physrevb.111.064109.'
mla: Pionteck, Mike N., et al. “Second-Order Nonlinear Piezo-Optic Properties of
Single Crystal Lithium Niobate Thin Films.” Physical Review B, vol. 111,
no. 6, 064109, American Physical Society (APS), 2025, doi:10.1103/physrevb.111.064109.
short: M.N. Pionteck, M. Roeper, B. Koppitz, S.D. Seddon, M. Rüsing, L. Padberg,
C. Eigner, C. Silberhorn, S. Sanna, L.M. Eng, Physical Review B 111 (2025).
date_created: 2025-04-02T16:21:47Z
date_updated: 2025-04-02T16:24:47Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1103/physrevb.111.064109
intvolume: ' 111'
issue: '6'
language:
- iso: eng
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
publisher: American Physical Society (APS)
quality_controlled: '1'
status: public
title: Second-order nonlinear piezo-optic properties of single crystal lithium niobate
thin films
type: journal_article
user_id: '22501'
volume: 111
year: '2025'
...
---
_id: '60136'
abstract:
- lang: eng
text: Modulation conditioned on measurements on entangled photonic quantum
states is a cornerstone technology of optical quantum information processing.
Performing this task with low latency requires combining single-photon-level detectors
with both electronic logic processing and optical modulation in close proximity.
Here, we demonstrate low-latency feedforward using a quasi-photon-number-resolved
measurement on a quantum light source. Specifically, we use a multipixel superconducting
nanowire single-photon detector, amplifier, logic, and an integrated electro-optic
modulator in situ below 4 K. We modulate
the signal mode of a spontaneous parametric down-conversion source, conditional
on a photon-number measurement of the idler mode, with a total latency of (23±3)ns.
Furthermore, we investigate the resulting change in the photon statistics. This
represents an important benchmark for the fastest quantum photonic feedforward
experiments comprising measurement, amplification, logic, and modulation. This
has direct applications in quantum computing, communication, and simulation protocols.
article_number: '720'
author:
- first_name: Frederik
full_name: Thiele, Frederik
id: '50819'
last_name: Thiele
orcid: 0000-0003-0663-5587
- first_name: Niklas
full_name: Lamberty, Niklas
id: '75307'
last_name: Lamberty
- first_name: Thomas
full_name: Hummel, Thomas
id: '83846'
last_name: Hummel
orcid: 0000-0001-8627-2119
- first_name: Nina Amelie
full_name: Lange, Nina Amelie
id: '56843'
last_name: Lange
orcid: 0000-0001-6624-7098
- first_name: Lorenzo Manuel
full_name: Procopio Peña, Lorenzo Manuel
id: '105816'
last_name: Procopio Peña
- first_name: Aishi
full_name: Barua, Aishi
id: '104502'
last_name: Barua
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: Thiele F, Lamberty N, Hummel T, et al. Cryogenic feedforward of a photonic
quantum state. Optica. 2025;12(5). doi:10.1364/optica.551287
apa: Thiele, F., Lamberty, N., Hummel, T., Lange, N. A., Procopio Peña, L. M., Barua,
A., Lengeling, S., Quiring, V., Eigner, C., Silberhorn, C., & Bartley, T.
(2025). Cryogenic feedforward of a photonic quantum state. Optica, 12(5),
Article 720. https://doi.org/10.1364/optica.551287
bibtex: '@article{Thiele_Lamberty_Hummel_Lange_Procopio Peña_Barua_Lengeling_Quiring_Eigner_Silberhorn_et
al._2025, title={Cryogenic feedforward of a photonic quantum state}, volume={12},
DOI={10.1364/optica.551287},
number={5720}, journal={Optica}, publisher={Optica Publishing Group}, author={Thiele,
Frederik and Lamberty, Niklas and Hummel, Thomas and Lange, Nina Amelie and Procopio
Peña, Lorenzo Manuel and Barua, Aishi and Lengeling, Sebastian and Quiring, Viktor
and Eigner, Christof and Silberhorn, Christine and et al.}, year={2025} }'
chicago: Thiele, Frederik, Niklas Lamberty, Thomas Hummel, Nina Amelie Lange, Lorenzo
Manuel Procopio Peña, Aishi Barua, Sebastian Lengeling, et al. “Cryogenic Feedforward
of a Photonic Quantum State.” Optica 12, no. 5 (2025). https://doi.org/10.1364/optica.551287.
ieee: 'F. Thiele et al., “Cryogenic feedforward of a photonic quantum state,”
Optica, vol. 12, no. 5, Art. no. 720, 2025, doi: 10.1364/optica.551287.'
mla: Thiele, Frederik, et al. “Cryogenic Feedforward of a Photonic Quantum State.”
Optica, vol. 12, no. 5, 720, Optica Publishing Group, 2025, doi:10.1364/optica.551287.
short: F. Thiele, N. Lamberty, T. Hummel, N.A. Lange, L.M. Procopio Peña, A. Barua,
S. Lengeling, V. Quiring, C. Eigner, C. Silberhorn, T. Bartley, Optica 12 (2025).
date_created: 2025-06-04T18:34:16Z
date_updated: 2025-06-12T09:56:47Z
doi: 10.1364/optica.551287
intvolume: ' 12'
issue: '5'
language:
- iso: eng
publication: Optica
publication_identifier:
issn:
- 2334-2536
publication_status: published
publisher: Optica Publishing Group
status: public
title: Cryogenic feedforward of a photonic quantum state
type: journal_article
user_id: '56843'
volume: 12
year: '2025'
...
---
_id: '62269'
abstract:
- lang: eng
text: The titanium in-diffused lithium niobate waveguide platform is well-established
for reliable prototyping and packaging of many quantum photonic components at
room temperature. Nevertheless, compatibility with certain quantum light sources
and superconducting detectors requires operation under cryogenic conditions. We
characterize alterations in phase-matching and mode guiding of a non-degenerate
spontaneous parametric down-conversion process emitting around 1556 nm and 950 nm,
under cryogenic conditions. Despite the effects of pyroelectricity and photorefraction,
the spectral properties match our theoretical model. Nevertheless, these effects
cause small but significant variations within and between cooling cycles. These
measurements provide a first benchmark against which other nonlinear photonic
integration platforms, such as thin-film lithium niobate, can be compared.
article_number: '50451'
article_type: original
author:
- first_name: Nina Amelie
full_name: Lange, Nina Amelie
id: '56843'
last_name: Lange
orcid: 0000-0001-6624-7098
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Philipp
full_name: Mues, Philipp
id: '49772'
last_name: Mues
orcid: 0000-0003-0643-7636
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Werner
full_name: Ridder, Werner
id: '63574'
last_name: Ridder
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: Lange NA, Lengeling S, Mues P, et al. Widely non-degenerate nonlinear frequency
conversion in cryogenic titanium in-diffused lithium niobate waveguides. Optics
Express. 2025;33(24). doi:10.1364/oe.578108
apa: Lange, N. A., Lengeling, S., Mues, P., Quiring, V., Ridder, W., Eigner, C.,
Herrmann, H., Silberhorn, C., & Bartley, T. (2025). Widely non-degenerate
nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate
waveguides. Optics Express, 33(24), Article 50451. https://doi.org/10.1364/oe.578108
bibtex: '@article{Lange_Lengeling_Mues_Quiring_Ridder_Eigner_Herrmann_Silberhorn_Bartley_2025,
title={Widely non-degenerate nonlinear frequency conversion in cryogenic titanium
in-diffused lithium niobate waveguides}, volume={33}, DOI={10.1364/oe.578108},
number={2450451}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Lange, Nina Amelie and Lengeling, Sebastian and Mues, Philipp and Quiring,
Viktor and Ridder, Werner and Eigner, Christof and Herrmann, Harald and Silberhorn,
Christine and Bartley, Tim}, year={2025} }'
chicago: Lange, Nina Amelie, Sebastian Lengeling, Philipp Mues, Viktor Quiring,
Werner Ridder, Christof Eigner, Harald Herrmann, Christine Silberhorn, and Tim
Bartley. “Widely Non-Degenerate Nonlinear Frequency Conversion in Cryogenic Titanium
in-Diffused Lithium Niobate Waveguides.” Optics Express 33, no. 24 (2025).
https://doi.org/10.1364/oe.578108.
ieee: 'N. A. Lange et al., “Widely non-degenerate nonlinear frequency conversion
in cryogenic titanium in-diffused lithium niobate waveguides,” Optics Express,
vol. 33, no. 24, Art. no. 50451, 2025, doi: 10.1364/oe.578108.'
mla: Lange, Nina Amelie, et al. “Widely Non-Degenerate Nonlinear Frequency Conversion
in Cryogenic Titanium in-Diffused Lithium Niobate Waveguides.” Optics Express,
vol. 33, no. 24, 50451, Optica Publishing Group, 2025, doi:10.1364/oe.578108.
short: N.A. Lange, S. Lengeling, P. Mues, V. Quiring, W. Ridder, C. Eigner, H. Herrmann,
C. Silberhorn, T. Bartley, Optics Express 33 (2025).
date_created: 2025-11-20T10:35:35Z
date_updated: 2025-12-12T12:13:45Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1364/oe.578108
intvolume: ' 33'
issue: '24'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '171'
name: 'TRR 142; TP C07: Hohlraum-verstärkte Parametrische Fluoreszenz mit zeitlicher
Filterung unter Verwendung integrierter supraleitender Detektoren'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Widely non-degenerate nonlinear frequency conversion in cryogenic titanium
in-diffused lithium niobate waveguides
type: journal_article
user_id: '49683'
volume: 33
year: '2025'
...
---
_id: '63192'
abstract:
- lang: eng
text: Lithium niobate (LiNbO3) is a widely used material with several desirable
physical properties, such as high second-order nonlinear optical and strong electro-optical
effects. Thus LiNbO3 is used for various applications such as electro-optic modulation
or nonlinear frequency conversion and mixing. But LiNbO3 also exhibits a strong
photorefractive effect, which limits the intensity of the optical fields involved.
Various approaches to reduce the photorefractive effect have been investigated,
such as increasing the temperature, doping the crystal or using different waveguide
designs in LiNbO3. Here, we present an analysis of the approach to increase the
photorefractive damage threshold by using different waveguide designs. Contrary
to previous claims and investigations, our SHG measurements revealed no significant
difference in resistance to photorefractive damage when comparing conventional
Ti-doped channel waveguides and Ti-doped diced ridge waveguides in LiNbO3. Furthermore,
we have investigated the effect of photorefractive cleaning and curing using a
light field at 532 nm. Here, we observe a reduction in the photorefractive effect
at room temperature during and after SHG measurements, which is an easy alternative
to conventional approaches.
article_number: '114260'
article_type: original
author:
- first_name: Michelle
full_name: Kirsch, Michelle
id: '69553'
last_name: Kirsch
- first_name: Christian
full_name: Kießler, Christian
id: '44252'
last_name: Kießler
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Kirsch M, Kießler C, Lengeling S, et al. Photorefraction and in-situ optical
cleaning in various types of LiNbO3 waveguides. Optics & Laser Technology.
2025;193. doi:10.1016/j.optlastec.2025.114260
apa: Kirsch, M., Kießler, C., Lengeling, S., Stefszky, M., Eigner, C., Herrmann,
H., & Silberhorn, C. (2025). Photorefraction and in-situ optical cleaning
in various types of LiNbO3 waveguides. Optics & Laser Technology, 193,
Article 114260. https://doi.org/10.1016/j.optlastec.2025.114260
bibtex: '@article{Kirsch_Kießler_Lengeling_Stefszky_Eigner_Herrmann_Silberhorn_2025,
title={Photorefraction and in-situ optical cleaning in various types of LiNbO3
waveguides}, volume={193}, DOI={10.1016/j.optlastec.2025.114260},
number={114260}, journal={Optics & Laser Technology}, publisher={Elsevier
BV}, author={Kirsch, Michelle and Kießler, Christian and Lengeling, Sebastian
and Stefszky, Michael and Eigner, Christof and Herrmann, Harald and Silberhorn,
Christine}, year={2025} }'
chicago: Kirsch, Michelle, Christian Kießler, Sebastian Lengeling, Michael Stefszky,
Christof Eigner, Harald Herrmann, and Christine Silberhorn. “Photorefraction and
In-Situ Optical Cleaning in Various Types of LiNbO3 Waveguides.” Optics &
Laser Technology 193 (2025). https://doi.org/10.1016/j.optlastec.2025.114260.
ieee: 'M. Kirsch et al., “Photorefraction and in-situ optical cleaning in
various types of LiNbO3 waveguides,” Optics & Laser Technology, vol.
193, Art. no. 114260, 2025, doi: 10.1016/j.optlastec.2025.114260.'
mla: Kirsch, Michelle, et al. “Photorefraction and In-Situ Optical Cleaning in Various
Types of LiNbO3 Waveguides.” Optics & Laser Technology, vol. 193, 114260,
Elsevier BV, 2025, doi:10.1016/j.optlastec.2025.114260.
short: M. Kirsch, C. Kießler, S. Lengeling, M. Stefszky, C. Eigner, H. Herrmann,
C. Silberhorn, Optics & Laser Technology 193 (2025).
date_created: 2025-12-18T08:17:57Z
date_updated: 2025-12-18T08:27:13Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
doi: 10.1016/j.optlastec.2025.114260
intvolume: ' 193'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S0030399225018511?via%3Dihub
oa: '1'
publication: Optics & Laser Technology
publication_identifier:
issn:
- 0030-3992
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides
type: journal_article
user_id: '69553'
volume: 193
year: '2025'
...
---
_id: '63091'
abstract:
- lang: eng
text: We present the design and characterization of a guided-wave, bright, and highly
frequency non-degenerate parametric down-conversion (PDC) source in thin-film
lithium niobate. The source generates photon pairs with wavelengths of 815 nm
and 1550 nm, linking the visible wavelength regime with telecommunication wavelengths.
We confirm the high quality of the generated single photons by determining a value
for the heralded second-order correlation function as low as g_h^(2)=(6.7+/-1.1)*10^8-3).
Furthermore, we achieve a high spectral brightness of 0.44·10pairs/(smWGHz) which
is two orders of magnitude higher than sources based on weakly guiding waveguides.
The shape of the PDC spectrum and the strong agreement between the effective and
nominal bandwidth highlight our high fabrication quality of periodically poled
waveguides. The good agreement between the measured and simulated spectral characteristics
of our source demonstrates our excellent understanding of the PDC process. Our
result is a valuable step towards practical and scalable quantum communication
networks as well as photonic quantum computing.
article_number: '52729'
article_type: original
author:
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: Werner
full_name: Ridder, Werner
id: '63574'
last_name: Ridder
- first_name: Christian
full_name: Golla, Christian
id: '40420'
last_name: Golla
- first_name: Ronja
full_name: Köthemann, Ronja
last_name: Köthemann
- first_name: Bernhard
full_name: Reineke, Bernhard
id: '29821'
last_name: Reineke
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Babel S, Bollmers L, Roeder F, et al. Ultrabright, two-color photon pair source
based on thin-film lithium niobate for bridging visible and telecom wavelengths.
Optics Express. 2025;33(25). doi:10.1364/oe.571605
apa: Babel, S., Bollmers, L., Roeder, F., Ridder, W., Golla, C., Köthemann, R.,
Reineke, B., Herrmann, H., Brecht, B., Eigner, C., Padberg, L., & Silberhorn,
C. (2025). Ultrabright, two-color photon pair source based on thin-film lithium
niobate for bridging visible and telecom wavelengths. Optics Express, 33(25),
Article 52729. https://doi.org/10.1364/oe.571605
bibtex: '@article{Babel_Bollmers_Roeder_Ridder_Golla_Köthemann_Reineke_Herrmann_Brecht_Eigner_et
al._2025, title={Ultrabright, two-color photon pair source based on thin-film
lithium niobate for bridging visible and telecom wavelengths}, volume={33}, DOI={10.1364/oe.571605}, number={2552729},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Babel,
Silia and Bollmers, Laura and Roeder, Franz and Ridder, Werner and Golla, Christian
and Köthemann, Ronja and Reineke, Bernhard and Herrmann, Harald and Brecht, Benjamin
and Eigner, Christof and et al.}, year={2025} }'
chicago: Babel, Silia, Laura Bollmers, Franz Roeder, Werner Ridder, Christian Golla,
Ronja Köthemann, Bernhard Reineke, et al. “Ultrabright, Two-Color Photon Pair
Source Based on Thin-Film Lithium Niobate for Bridging Visible and Telecom Wavelengths.”
Optics Express 33, no. 25 (2025). https://doi.org/10.1364/oe.571605.
ieee: 'S. Babel et al., “Ultrabright, two-color photon pair source based
on thin-film lithium niobate for bridging visible and telecom wavelengths,” Optics
Express, vol. 33, no. 25, Art. no. 52729, 2025, doi: 10.1364/oe.571605.'
mla: Babel, Silia, et al. “Ultrabright, Two-Color Photon Pair Source Based on Thin-Film
Lithium Niobate for Bridging Visible and Telecom Wavelengths.” Optics Express,
vol. 33, no. 25, 52729, Optica Publishing Group, 2025, doi:10.1364/oe.571605.
short: S. Babel, L. Bollmers, F. Roeder, W. Ridder, C. Golla, R. Köthemann, B. Reineke,
H. Herrmann, B. Brecht, C. Eigner, L. Padberg, C. Silberhorn, Optics Express 33
(2025).
date_created: 2025-12-15T07:20:36Z
date_updated: 2026-01-07T11:28:35Z
department:
- _id: '288'
- _id: '623'
doi: 10.1364/oe.571605
intvolume: ' 33'
issue: '25'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-25-52729
oa: '1'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Ultrabright, two-color photon pair source based on thin-film lithium niobate
for bridging visible and telecom wavelengths
type: journal_article
user_id: '63231'
volume: 33
year: '2025'
...
---
_id: '62713'
abstract:
- lang: eng
text: Periodically poled thin-film lithium niobate (TFLN) crystals are the fundamental
building block for highly-efficient quantum light sources and frequency converters.
The efficiency of these devices is strongly dependent on the interaction length
between the light and the nonlinear material, scaling quadratically with this
parameter. Nevertheless, the fabrication of long, continuously poled areas in
TFLN remains challenging, the length of continuously poled areas rarely exceeds
10 mm. In this work, we demonstrate a significant progress in this field achieving
the periodic poling of continuous poled areas of 70 mm length with a 3 μm poling
period and a close to 50 % duty cycle. We compare two poling electrode design
approaches to fabricate long, continuous poled areas. The first approach involves
the poling of a single, continuous 70 mm long electrode. The second utilize a
segmented approach including the poling of more than 20 individual sections forming
together a 70 mm long poling area with no stitching errors. While the continuous
electrode allows for faster fabrication, the segmented approach allows to individually
optimize the poling resulting in less duty cycle variation. A detailed analysis
of the periodic poling results reveals that the results of both are consistent
with previously reported poling outcomes for shorter devices. Thus, we demonstrate
wafer-scale periodic poling exceeding chiplet-size without any loss in the periodic
poling quality. Our work presents a key step towards highly-efficient, narrow-bandwidth
and low-pump power nonlinear optical devices.
article_type: original
author:
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Noah
full_name: Spiegelberg, Noah
last_name: Spiegelberg
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Bollmers L, Spiegelberg N, Rüsing M, Eigner C, Padberg L, Silberhorn C. Segmented
finger electrodes to optimize ultra-long continuous wafer-scale periodic poling
in thin-film lithium niobate. Nanophotonics. 2025;14:4761. doi:10.1515/nanoph-2025-0461
apa: Bollmers, L., Spiegelberg, N., Rüsing, M., Eigner, C., Padberg, L., & Silberhorn,
C. (2025). Segmented finger electrodes to optimize ultra-long continuous wafer-scale
periodic poling in thin-film lithium niobate. Nanophotonics, 14,
4761. https://doi.org/10.1515/nanoph-2025-0461
bibtex: '@article{Bollmers_Spiegelberg_Rüsing_Eigner_Padberg_Silberhorn_2025, title={Segmented
finger electrodes to optimize ultra-long continuous wafer-scale periodic poling
in thin-film lithium niobate}, volume={14}, DOI={10.1515/nanoph-2025-0461},
journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Bollmers,
Laura and Spiegelberg, Noah and Rüsing, Michael and Eigner, Christof and Padberg,
Laura and Silberhorn, Christine}, year={2025}, pages={4761} }'
chicago: 'Bollmers, Laura, Noah Spiegelberg, Michael Rüsing, Christof Eigner, Laura
Padberg, and Christine Silberhorn. “Segmented Finger Electrodes to Optimize Ultra-Long
Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” Nanophotonics
14 (2025): 4761. https://doi.org/10.1515/nanoph-2025-0461.'
ieee: 'L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, and C. Silberhorn,
“Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic
poling in thin-film lithium niobate,” Nanophotonics, vol. 14, p. 4761,
2025, doi: 10.1515/nanoph-2025-0461.'
mla: Bollmers, Laura, et al. “Segmented Finger Electrodes to Optimize Ultra-Long
Continuous Wafer-Scale Periodic Poling in Thin-Film Lithium Niobate.” Nanophotonics,
vol. 14, Walter de Gruyter GmbH, 2025, p. 4761, doi:10.1515/nanoph-2025-0461.
short: L. Bollmers, N. Spiegelberg, M. Rüsing, C. Eigner, L. Padberg, C. Silberhorn,
Nanophotonics 14 (2025) 4761.
date_created: 2025-12-01T08:45:07Z
date_updated: 2026-01-07T12:06:29Z
department:
- _id: '15'
- _id: '288'
- _id: '623'
doi: 10.1515/nanoph-2025-0461
intvolume: ' 14'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1515/nanoph-2025-0461
oa: '1'
page: '4761'
publication: Nanophotonics
publication_identifier:
issn:
- 2192-8606
- 2192-8614
publication_status: published
publisher: Walter de Gruyter GmbH
quality_controlled: '1'
status: public
title: Segmented finger electrodes to optimize ultra-long continuous wafer-scale periodic
poling in thin-film lithium niobate
type: journal_article
user_id: '22501'
volume: 14
year: '2025'
...
---
_id: '60566'
article_number: '074402'
author:
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Philipp
full_name: Mues, Philipp
id: '49772'
last_name: Mues
orcid: 0000-0003-0643-7636
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
citation:
ama: 'Bocchini A, Rüsing M, Bollmers L, et al. Mg dopants in lithium niobate: Defect
models and impact on domain inversion. Physical Review Materials. 2025;9(7).
doi:10.1103/5wz1-bjyr'
apa: 'Bocchini, A., Rüsing, M., Bollmers, L., Lengeling, S., Mues, P., Padberg,
L., Gerstmann, U., Silberhorn, C., Eigner, C., & Schmidt, W. G. (2025). Mg
dopants in lithium niobate: Defect models and impact on domain inversion. Physical
Review Materials, 9(7), Article 074402. https://doi.org/10.1103/5wz1-bjyr'
bibtex: '@article{Bocchini_Rüsing_Bollmers_Lengeling_Mues_Padberg_Gerstmann_Silberhorn_Eigner_Schmidt_2025,
title={Mg dopants in lithium niobate: Defect models and impact on domain inversion},
volume={9}, DOI={10.1103/5wz1-bjyr},
number={7074402}, journal={Physical Review Materials}, publisher={American Physical
Society (APS)}, author={Bocchini, Adriana and Rüsing, Michael and Bollmers, Laura
and Lengeling, Sebastian and Mues, Philipp and Padberg, Laura and Gerstmann, Uwe
and Silberhorn, Christine and Eigner, Christof and Schmidt, Wolf Gero}, year={2025}
}'
chicago: 'Bocchini, Adriana, Michael Rüsing, Laura Bollmers, Sebastian Lengeling,
Philipp Mues, Laura Padberg, Uwe Gerstmann, Christine Silberhorn, Christof Eigner,
and Wolf Gero Schmidt. “Mg Dopants in Lithium Niobate: Defect Models and Impact
on Domain Inversion.” Physical Review Materials 9, no. 7 (2025). https://doi.org/10.1103/5wz1-bjyr.'
ieee: 'A. Bocchini et al., “Mg dopants in lithium niobate: Defect models
and impact on domain inversion,” Physical Review Materials, vol. 9, no.
7, Art. no. 074402, 2025, doi: 10.1103/5wz1-bjyr.'
mla: 'Bocchini, Adriana, et al. “Mg Dopants in Lithium Niobate: Defect Models and
Impact on Domain Inversion.” Physical Review Materials, vol. 9, no. 7,
074402, American Physical Society (APS), 2025, doi:10.1103/5wz1-bjyr.'
short: A. Bocchini, M. Rüsing, L. Bollmers, S. Lengeling, P. Mues, L. Padberg, U.
Gerstmann, C. Silberhorn, C. Eigner, W.G. Schmidt, Physical Review Materials 9
(2025).
date_created: 2025-07-09T09:13:24Z
date_updated: 2026-03-17T17:50:06Z
ddc:
- '530'
department:
- _id: '15'
- _id: '623'
- _id: '295'
- _id: '790'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '170'
- _id: '169'
- _id: '27'
doi: 10.1103/5wz1-bjyr
file:
- access_level: open_access
content_type: application/pdf
creator: adrianab
date_created: 2025-07-09T09:18:45Z
date_updated: 2025-07-10T06:43:34Z
file_id: '60567'
file_name: Mg_dopants_LN_PRM.pdf
file_size: 4175120
relation: main_file
file_date_updated: 2025-07-10T06:43:34Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.aps.org/doi/10.1103/5wz1-bjyr
oa: '1'
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _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: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _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'
publication: Physical Review Materials
publication_identifier:
issn:
- 2475-9953
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Mg dopants in lithium niobate: Defect models and impact on domain inversion'
type: journal_article
user_id: '22501'
volume: 9
year: '2025'
...
---
_id: '54544'
abstract:
- lang: eng
text: The biphoton correlation time, a measure for the conditional uncertainty in
the temporal arrival of two photons from a photon pair source, is a key performance
identifier for many quantum spectroscopy applications, with shorter correlation
times typically yielding better performance. Furthermore, it provides fundamental
insight into the effects of dispersion on the biphoton state. Here, we show that
a characteristic dependence of the width of the temporal interferogram can be
exploited to obtain insights into the amount of second-order dispersion inside
the interferometer and to retrieve actual and Fourier-limited ultrashort biphoton
correlation times of around 100 fs. In the presented scheme, we simultaneously
measure spectral and temporal interferograms at the output of an SU(1,1) interferometer
based on an integrated broadband parametric down conversion source in a Ti:LiNbO3
waveguide.
article_number: '020350'
author:
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: René
full_name: Pollmann, René
id: '78890'
last_name: Pollmann
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: V.
full_name: Quiring, V.
last_name: Quiring
- first_name: Raimund
full_name: Ricken, Raimund
last_name: Ricken
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Roeder F, Pollmann R, Stefszky M, et al. Measurement of Ultrashort Biphoton
Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer.
PRX Quantum. 2024;5(2). doi:10.1103/prxquantum.5.020350
apa: Roeder, F., Pollmann, R., Stefszky, M., Santandrea, M., Luo, K. H., Quiring,
V., Ricken, R., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Measurement
of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband
SU(1,1)-Interferometer. PRX Quantum, 5(2), Article 020350. https://doi.org/10.1103/prxquantum.5.020350
bibtex: '@article{Roeder_Pollmann_Stefszky_Santandrea_Luo_Quiring_Ricken_Eigner_Brecht_Silberhorn_2024,
title={Measurement of Ultrashort Biphoton Correlation Times with an Integrated
Two-Color Broadband SU(1,1)-Interferometer}, volume={5}, DOI={10.1103/prxquantum.5.020350},
number={2020350}, journal={PRX Quantum}, publisher={American Physical Society
(APS)}, author={Roeder, Franz and Pollmann, René and Stefszky, Michael and Santandrea,
Matteo and Luo, Kai Hong and Quiring, V. and Ricken, Raimund and Eigner, Christof
and Brecht, Benjamin and Silberhorn, Christine}, year={2024} }'
chicago: Roeder, Franz, René Pollmann, Michael Stefszky, Matteo Santandrea, Kai
Hong Luo, V. Quiring, Raimund Ricken, Christof Eigner, Benjamin Brecht, and Christine
Silberhorn. “Measurement of Ultrashort Biphoton Correlation Times with an Integrated
Two-Color Broadband SU(1,1)-Interferometer.” PRX Quantum 5, no. 2 (2024).
https://doi.org/10.1103/prxquantum.5.020350.
ieee: 'F. Roeder et al., “Measurement of Ultrashort Biphoton Correlation
Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer,” PRX Quantum,
vol. 5, no. 2, Art. no. 020350, 2024, doi: 10.1103/prxquantum.5.020350.'
mla: Roeder, Franz, et al. “Measurement of Ultrashort Biphoton Correlation Times
with an Integrated Two-Color Broadband SU(1,1)-Interferometer.” PRX Quantum,
vol. 5, no. 2, 020350, American Physical Society (APS), 2024, doi:10.1103/prxquantum.5.020350.
short: F. Roeder, R. Pollmann, M. Stefszky, M. Santandrea, K.H. Luo, V. Quiring,
R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, PRX Quantum 5 (2024).
date_created: 2024-06-01T12:48:51Z
date_updated: 2024-06-01T13:00:53Z
department:
- _id: '288'
- _id: '623'
doi: 10.1103/prxquantum.5.020350
intvolume: ' 5'
issue: '2'
language:
- iso: eng
project:
- _id: '207'
grant_number: 13N15065
name: 'MiLiQuant: Miniaturisierte Lichtquellen für den industriellen Einsatz in
Quantensensoren und Quanten-Imaging-Systemen (MiLiQuant) - Teilvorhaben: Technologie
und Theorie für MIR Quanten-Imaging Systeme'
- _id: '571'
grant_number: '101070700'
name: 'MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing'
- _id: '190'
name: 'E2TPA: Exploiting Entangled Two-Photon Absorption'
publication: PRX Quantum
publication_identifier:
issn:
- 2691-3399
publication_status: published
publisher: American Physical Society (APS)
status: public
title: Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color
Broadband SU(1,1)-Interferometer
type: journal_article
user_id: '88149'
volume: 5
year: '2024'
...
---
_id: '57028'
abstract:
- lang: eng
text: Lithium niobate and lithium tantalate are among the most widespread
materials for nonlinear, integrated photonics. Mixed crystals with arbitrary Nb–Ta
ratios provide an additional degree of freedom to not only tune materials properties,
such as the birefringence but also leverage the advantages of the singular compounds,
for example, by combining the thermal stability of lithium tantalate with the
larger nonlinear or piezoelectric constants of lithium niobate. Periodic poling
allows to achieve phase-matching independent of waveguide geometry and is, therefore,
one of the commonly used methods in integrated nonlinear optics. For mixed crystals,
periodic poling has been challenging so far due to the lack of homogeneous, mono-domain
crystals, which severely inhibit domain growth and nucleation. In this work, we
investigate surface-near (<1μm depth) domain inversion on x-cut lithium
niobate tantalate mixed crystals via electric field poling and lithographically
structured electrodes. We find that naturally occurring head-to-head or tail-to-tail
domain walls in the as-grown crystal inhibit domain inversion at a larger scale.
However, periodic poling is possible if the gap size between the poling electrodes
is of the same order of magnitude or smaller than the average size of naturally
occurring domains. This work provides the basis for the nonlinear optical application
of lithium niobate tantalate mixed crystals.
author:
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Tobias
full_name: Babai-Hemati, Tobias
last_name: Babai-Hemati
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Bollmers L, Babai-Hemati T, Koppitz B, et al. Surface-near domain engineering
in multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics
Letters. 2024;125(15). doi:10.1063/5.0210972
apa: Bollmers, L., Babai-Hemati, T., Koppitz, B., Eigner, C., Padberg, L., Rüsing,
M., Eng, L. M., & Silberhorn, C. (2024). Surface-near domain engineering in
multi-domain x-cut lithium niobate tantalate mixed crystals. Applied Physics
Letters, 125(15). https://doi.org/10.1063/5.0210972
bibtex: '@article{Bollmers_Babai-Hemati_Koppitz_Eigner_Padberg_Rüsing_Eng_Silberhorn_2024,
title={Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate
mixed crystals}, volume={125}, DOI={10.1063/5.0210972},
number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Bollmers,
Laura and Babai-Hemati, Tobias and Koppitz, Boris and Eigner, Christof and Padberg,
Laura and Rüsing, Michael and Eng, Lukas M. and Silberhorn, Christine}, year={2024}
}'
chicago: Bollmers, Laura, Tobias Babai-Hemati, Boris Koppitz, Christof Eigner, Laura
Padberg, Michael Rüsing, Lukas M. Eng, and Christine Silberhorn. “Surface-near
Domain Engineering in Multi-Domain x-Cut Lithium Niobate Tantalate Mixed Crystals.”
Applied Physics Letters 125, no. 15 (2024). https://doi.org/10.1063/5.0210972.
ieee: 'L. Bollmers et al., “Surface-near domain engineering in multi-domain
x-cut lithium niobate tantalate mixed crystals,” Applied Physics Letters,
vol. 125, no. 15, 2024, doi: 10.1063/5.0210972.'
mla: Bollmers, Laura, et al. “Surface-near Domain Engineering in Multi-Domain x-Cut
Lithium Niobate Tantalate Mixed Crystals.” Applied Physics Letters, vol.
125, no. 15, AIP Publishing, 2024, doi:10.1063/5.0210972.
short: L. Bollmers, T. Babai-Hemati, B. Koppitz, C. Eigner, L. Padberg, M. Rüsing,
L.M. Eng, C. Silberhorn, Applied Physics Letters 125 (2024).
date_created: 2024-11-13T08:06:59Z
date_updated: 2024-11-15T09:15:08Z
department:
- _id: '15'
- _id: '623'
- _id: '230'
- _id: '288'
doi: 10.1063/5.0210972
intvolume: ' 125'
issue: '15'
language:
- iso: eng
project:
- _id: '168'
grant_number: '231447078'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
status: public
title: Surface-near domain engineering in multi-domain x-cut lithium niobate tantalate
mixed crystals
type: journal_article
user_id: '61375'
volume: 125
year: '2024'
...
---
_id: '59259'
author:
- first_name: Tobias
full_name: Schwabe, Tobias
id: '39217'
last_name: Schwabe
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Niels
full_name: Staal, Niels
last_name: Staal
- first_name: Max
full_name: Schwengelbeck, Max
last_name: Schwengelbeck
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
citation:
ama: Schwabe T, Rüsing M, Staal N, et al. Quantum Photonic Systems in CMOS Compatible
Silicon Nitride Technology . Zenodo; 2024. doi:10.5281/zenodo.15124929
apa: Schwabe, T., Rüsing, M., Staal, N., Schwengelbeck, M., Bollmers, L., Padberg,
L., Eigner, C., Silberhorn, C., & Scheytt, J. C. (2024). Quantum photonic
systems in CMOS compatible silicon nitride technology . Zenodo. https://doi.org/10.5281/zenodo.15124929
bibtex: '@book{Schwabe_Rüsing_Staal_Schwengelbeck_Bollmers_Padberg_Eigner_Silberhorn_Scheytt_2024,
title={Quantum photonic systems in CMOS compatible silicon nitride technology
}, DOI={10.5281/zenodo.15124929},
publisher={Zenodo}, author={Schwabe, Tobias and Rüsing, Michael and Staal, Niels
and Schwengelbeck, Max and Bollmers, Laura and Padberg, Laura and Eigner, Christof
and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }'
chicago: Schwabe, Tobias, Michael Rüsing, Niels Staal, Max Schwengelbeck, Laura
Bollmers, Laura Padberg, Christof Eigner, Christine Silberhorn, and J. Christoph
Scheytt. Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology
. Zenodo, 2024. https://doi.org/10.5281/zenodo.15124929.
ieee: T. Schwabe et al., Quantum photonic systems in CMOS compatible silicon
nitride technology . Zenodo, 2024.
mla: Schwabe, Tobias, et al. Quantum Photonic Systems in CMOS Compatible Silicon
Nitride Technology . Zenodo, 2024, doi:10.5281/zenodo.15124929.
short: T. Schwabe, M. Rüsing, N. Staal, M. Schwengelbeck, L. Bollmers, L. Padberg,
C. Eigner, C. Silberhorn, J.C. Scheytt, Quantum Photonic Systems in CMOS Compatible
Silicon Nitride Technology , Zenodo, 2024.
date_created: 2025-04-02T11:24:23Z
date_updated: 2025-04-03T12:34:56Z
department:
- _id: '288'
- _id: '15'
- _id: '623'
doi: 10.5281/zenodo.15124929
language:
- iso: eng
publisher: Zenodo
status: public
title: 'Quantum photonic systems in CMOS compatible silicon nitride technology '
type: misc
user_id: '22501'
year: '2024'
...
---
_id: '51356'
abstract:
- lang: eng
text: "Abstract\r\n Lithium niobate
has emerged as a promising platform for integrated quantum optics, enabling efficient
generation, manipulation, and detection of quantum states of light. However, integrating
single-photon detectors requires cryogenic operating temperatures, since the best
performing detectors are based on narrow superconducting wires. While previous
studies have demonstrated the operation of quantum light sources and electro-optic
modulators in LiNbO3 at cryogenic temperatures, the thermal
transition between room temperature and cryogenic conditions introduces additional
effects that can significantly influence device performance. In this paper, we
investigate the generation of pyroelectric charges and their impact on the optical
properties of lithium niobate waveguides when changing from room temperature to
25 K, and vice versa. We measure the generated pyroelectric charge flow and correlate
this with fast changes in the birefringence acquired through the Sénarmont-method.
Both electrical and optical influence of the pyroelectric effect occur predominantly
at temperatures above 100 K."
article_number: '015402'
author:
- first_name: Frederik
full_name: Thiele, Frederik
id: '50819'
last_name: Thiele
orcid: 0000-0003-0663-5587
- first_name: Thomas
full_name: Hummel, Thomas
id: '83846'
last_name: Hummel
orcid: 0000-0001-8627-2119
- first_name: Nina Amelie
full_name: Lange, Nina Amelie
id: '56843'
last_name: Lange
orcid: 0000-0001-6624-7098
- first_name: Felix
full_name: Dreher, Felix
last_name: Dreher
- first_name: Maximilian
full_name: Protte, Maximilian
last_name: Protte
- first_name: Felix vom
full_name: Bruch, Felix vom
last_name: Bruch
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: Thiele F, Hummel T, Lange NA, et al. Pyroelectric influence on lithium niobate
during the thermal transition for cryogenic integrated photonics. Materials
for Quantum Technology. 2024;4(1). doi:10.1088/2633-4356/ad207d
apa: Thiele, F., Hummel, T., Lange, N. A., Dreher, F., Protte, M., Bruch, F. vom,
Lengeling, S., Herrmann, H., Eigner, C., Silberhorn, C., & Bartley, T. (2024).
Pyroelectric influence on lithium niobate during the thermal transition for cryogenic
integrated photonics. Materials for Quantum Technology, 4(1), Article
015402. https://doi.org/10.1088/2633-4356/ad207d
bibtex: '@article{Thiele_Hummel_Lange_Dreher_Protte_Bruch_Lengeling_Herrmann_Eigner_Silberhorn_et
al._2024, title={Pyroelectric influence on lithium niobate during the thermal
transition for cryogenic integrated photonics}, volume={4}, DOI={10.1088/2633-4356/ad207d},
number={1015402}, journal={Materials for Quantum Technology}, publisher={IOP Publishing},
author={Thiele, Frederik and Hummel, Thomas and Lange, Nina Amelie and Dreher,
Felix and Protte, Maximilian and Bruch, Felix vom and Lengeling, Sebastian and
Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and et al.}, year={2024}
}'
chicago: Thiele, Frederik, Thomas Hummel, Nina Amelie Lange, Felix Dreher, Maximilian
Protte, Felix vom Bruch, Sebastian Lengeling, et al. “Pyroelectric Influence on
Lithium Niobate during the Thermal Transition for Cryogenic Integrated Photonics.”
Materials for Quantum Technology 4, no. 1 (2024). https://doi.org/10.1088/2633-4356/ad207d.
ieee: 'F. Thiele et al., “Pyroelectric influence on lithium niobate during
the thermal transition for cryogenic integrated photonics,” Materials for Quantum
Technology, vol. 4, no. 1, Art. no. 015402, 2024, doi: 10.1088/2633-4356/ad207d.'
mla: Thiele, Frederik, et al. “Pyroelectric Influence on Lithium Niobate during
the Thermal Transition for Cryogenic Integrated Photonics.” Materials for Quantum
Technology, vol. 4, no. 1, 015402, IOP Publishing, 2024, doi:10.1088/2633-4356/ad207d.
short: F. Thiele, T. Hummel, N.A. Lange, F. Dreher, M. Protte, F. vom Bruch, S.
Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Materials for Quantum
Technology 4 (2024).
date_created: 2024-02-16T07:56:44Z
date_updated: 2025-12-15T09:23:02Z
doi: 10.1088/2633-4356/ad207d
intvolume: ' 4'
issue: '1'
keyword:
- General Earth and Planetary Sciences
- General Environmental Science
language:
- iso: eng
project:
- _id: '171'
name: 'TRR 142; TP C07: Hohlraum-verstärkte Parametrische Fluoreszenz mit zeitlicher
Filterung unter Verwendung integrierter supraleitender Detektoren'
publication: Materials for Quantum Technology
publication_identifier:
issn:
- 2633-4356
publication_status: published
publisher: IOP Publishing
status: public
title: Pyroelectric influence on lithium niobate during the thermal transition for
cryogenic integrated photonics
type: journal_article
user_id: '56843'
volume: 4
year: '2024'
...
---
_id: '63217'
abstract:
- lang: eng
text: We demonstrate a high-dimensional mode-sorter for single photons based
on a multi-output quantum pulse gate, which we can program to switch between different
temporal-mode encodings including pulse modes, frequency bins, time bins, and
their superpositions. This device can facilitate practical realizations of quantum
information applications such as high-dimensional quantum key distribution and
thus enables secure communication with enhanced information capacity. We characterize
the mode-sorter through a detector tomography in 3 and 5 dimensions and find a
fidelity up to 0.958 ± 0.030 at the single-photon level.
article_number: '5577'
author:
- first_name: Laura Maria
full_name: Serino, Laura Maria
id: '88242'
last_name: Serino
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Serino LM, Eigner C, Brecht B, Silberhorn C. Programmable time-frequency mode-sorting
of single photons with a multi-output quantum pulse gate. Optics Express.
2024;33(3). doi:10.1364/oe.544206
apa: Serino, L. M., Eigner, C., Brecht, B., & Silberhorn, C. (2024). Programmable
time-frequency mode-sorting of single photons with a multi-output quantum pulse
gate. Optics Express, 33(3), Article 5577. https://doi.org/10.1364/oe.544206
bibtex: '@article{Serino_Eigner_Brecht_Silberhorn_2024, title={Programmable time-frequency
mode-sorting of single photons with a multi-output quantum pulse gate}, volume={33},
DOI={10.1364/oe.544206}, number={35577},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Serino,
Laura Maria and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine},
year={2024} }'
chicago: Serino, Laura Maria, Christof Eigner, Benjamin Brecht, and Christine Silberhorn.
“Programmable Time-Frequency Mode-Sorting of Single Photons with a Multi-Output
Quantum Pulse Gate.” Optics Express 33, no. 3 (2024). https://doi.org/10.1364/oe.544206.
ieee: 'L. M. Serino, C. Eigner, B. Brecht, and C. Silberhorn, “Programmable time-frequency
mode-sorting of single photons with a multi-output quantum pulse gate,” Optics
Express, vol. 33, no. 3, Art. no. 5577, 2024, doi: 10.1364/oe.544206.'
mla: Serino, Laura Maria, et al. “Programmable Time-Frequency Mode-Sorting of Single
Photons with a Multi-Output Quantum Pulse Gate.” Optics Express, vol. 33,
no. 3, 5577, Optica Publishing Group, 2024, doi:10.1364/oe.544206.
short: L.M. Serino, C. Eigner, B. Brecht, C. Silberhorn, Optics Express 33 (2024).
date_created: 2025-12-18T16:09:22Z
date_updated: 2025-12-18T16:09:44Z
department:
- _id: '15'
- _id: '623'
doi: 10.1364/oe.544206
intvolume: ' 33'
issue: '3'
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Programmable time-frequency mode-sorting of single photons with a multi-output
quantum pulse gate
type: journal_article
user_id: '27150'
volume: 33
year: '2024'
...
---
_id: '54815'
abstract:
- lang: eng
text: "Broadband quantum light is a vital resource for quantum metrology
and spectroscopy applications such as quantum optical coherence tomography or
entangled two photon absorption. For entangled two photon absorption in particular,
very high photon flux combined with high time-frequency entanglement is crucial
for observing a signal. So far these conditions could be met by using high power
lasers driving degenerate, type 0 bulk-crystal spontaneous parametric down conversion
(SPDC) sources. This naturally limits the available wavelength ranges and precludes
deterministic splitting of the generated output photons. In this work we demonstrate
an integrated two-colour SPDC source utilising a group-velocity matched lithium
niobate waveguide, reaching both exceptional brightness 1.52⋅106pairssmWGHz
and large bandwidth (7.8 THz FWHM) while pumped with a few mW of continuous wave
(CW) laser light. By converting a narrow band pump to broadband pulses the created
photon pairs show correlation times of Δτ ≈ 120 fs
while maintaining the narrow bandwidth Δω\r\n
\ p\r\n ≪ 1 MHz of the CW pump light,
yielding strong time-frequency entanglement. Furthermore our process can be adapted
to a wide range of central wavelengths."
article_number: '23945'
article_type: original
author:
- first_name: René
full_name: Pollmann, René
id: '78890'
last_name: Pollmann
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: Victor
full_name: Quiring, Victor
last_name: Quiring
- first_name: Raimund
full_name: Ricken, Raimund
last_name: Ricken
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Pollmann R, Roeder F, Quiring V, et al. Integrated, bright broadband, two-colour
parametric down-conversion source. Optics Express. 2024;32(14). doi:10.1364/oe.522549
apa: Pollmann, R., Roeder, F., Quiring, V., Ricken, R., Eigner, C., Brecht, B.,
& Silberhorn, C. (2024). Integrated, bright broadband, two-colour parametric
down-conversion source. Optics Express, 32(14), Article 23945. https://doi.org/10.1364/oe.522549
bibtex: '@article{Pollmann_Roeder_Quiring_Ricken_Eigner_Brecht_Silberhorn_2024,
title={Integrated, bright broadband, two-colour parametric down-conversion source},
volume={32}, DOI={10.1364/oe.522549},
number={1423945}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Pollmann, René and Roeder, Franz and Quiring, Victor and Ricken, Raimund
and Eigner, Christof and Brecht, Benjamin and Silberhorn, Christine}, year={2024}
}'
chicago: Pollmann, René, Franz Roeder, Victor Quiring, Raimund Ricken, Christof
Eigner, Benjamin Brecht, and Christine Silberhorn. “Integrated, Bright Broadband,
Two-Colour Parametric down-Conversion Source.” Optics Express 32, no. 14
(2024). https://doi.org/10.1364/oe.522549.
ieee: 'R. Pollmann et al., “Integrated, bright broadband, two-colour parametric
down-conversion source,” Optics Express, vol. 32, no. 14, Art. no. 23945,
2024, doi: 10.1364/oe.522549.'
mla: Pollmann, René, et al. “Integrated, Bright Broadband, Two-Colour Parametric
down-Conversion Source.” Optics Express, vol. 32, no. 14, 23945, Optica
Publishing Group, 2024, doi:10.1364/oe.522549.
short: R. Pollmann, F. Roeder, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn,
Optics Express 32 (2024).
date_created: 2024-06-19T06:58:17Z
date_updated: 2025-12-19T11:37:41Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1364/oe.522549
intvolume: ' 32'
issue: '14'
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Integrated, bright broadband, two-colour parametric down-conversion source
type: journal_article
user_id: '78890'
volume: 32
year: '2024'
...
---
_id: '57862'
abstract:
- lang: eng
text: The latest applications in ultrafast quantum metrology require bright, broadband
bi-photon sources with one of the photons in the mid-infrared and the other in
the visible to near infrared. However, existing sources based on bulk crystals
are limited in brightness due to the short interaction length and only allow for
limited dispersion engineering. Here, we present an integrated PDC source based
on a Ti:LiNbO3 waveguide that generates broadband bi-photons with central wavelengths
at 860 nm and 2800 nm. Their spectral bandwidth exceeds 25 THz and is achieved
by simultaneous matching of the group velocities (GVs) and cancellation of GV
dispersion for the signal and idler field. We provide an intuitive understanding
of the process by studying our source’s behavior at different temperatures and
pump wavelengths, which agrees well with simulations.
article_number: '123025'
article_type: original
author:
- first_name: Franz
full_name: Roeder, Franz
id: '88149'
last_name: Roeder
- first_name: Abira
full_name: Gnanavel, Abira
last_name: Gnanavel
- first_name: René
full_name: Pollmann, René
id: '78890'
last_name: Pollmann
- first_name: Olga
full_name: Brecht, Olga
last_name: Brecht
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
citation:
ama: Roeder F, Gnanavel A, Pollmann R, et al. Ultra-broadband non-degenerate guided-wave
bi-photon source in the near and mid-infrared. New Journal of Physics.
2024;26(12). doi:10.1088/1367-2630/ad9f98
apa: Roeder, F., Gnanavel, A., Pollmann, R., Brecht, O., Stefszky, M., Padberg,
L., Eigner, C., Silberhorn, C., & Brecht, B. (2024). Ultra-broadband non-degenerate
guided-wave bi-photon source in the near and mid-infrared. New Journal of Physics,
26(12), Article 123025. https://doi.org/10.1088/1367-2630/ad9f98
bibtex: '@article{Roeder_Gnanavel_Pollmann_Brecht_Stefszky_Padberg_Eigner_Silberhorn_Brecht_2024,
title={Ultra-broadband non-degenerate guided-wave bi-photon source in the near
and mid-infrared}, volume={26}, DOI={10.1088/1367-2630/ad9f98},
number={12123025}, journal={New Journal of Physics}, publisher={IOP Publishing},
author={Roeder, Franz and Gnanavel, Abira and Pollmann, René and Brecht, Olga
and Stefszky, Michael and Padberg, Laura and Eigner, Christof and Silberhorn,
Christine and Brecht, Benjamin}, year={2024} }'
chicago: Roeder, Franz, Abira Gnanavel, René Pollmann, Olga Brecht, Michael Stefszky,
Laura Padberg, Christof Eigner, Christine Silberhorn, and Benjamin Brecht. “Ultra-Broadband
Non-Degenerate Guided-Wave Bi-Photon Source in the near and Mid-Infrared.” New
Journal of Physics 26, no. 12 (2024). https://doi.org/10.1088/1367-2630/ad9f98.
ieee: 'F. Roeder et al., “Ultra-broadband non-degenerate guided-wave bi-photon
source in the near and mid-infrared,” New Journal of Physics, vol. 26,
no. 12, Art. no. 123025, 2024, doi: 10.1088/1367-2630/ad9f98.'
mla: Roeder, Franz, et al. “Ultra-Broadband Non-Degenerate Guided-Wave Bi-Photon
Source in the near and Mid-Infrared.” New Journal of Physics, vol. 26,
no. 12, 123025, IOP Publishing, 2024, doi:10.1088/1367-2630/ad9f98.
short: F. Roeder, A. Gnanavel, R. Pollmann, O. Brecht, M. Stefszky, L. Padberg,
C. Eigner, C. Silberhorn, B. Brecht, New Journal of Physics 26 (2024).
date_created: 2024-12-27T19:01:14Z
date_updated: 2025-12-19T11:36:36Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
doi: 10.1088/1367-2630/ad9f98
intvolume: ' 26'
issue: '12'
language:
- iso: eng
project:
- _id: '571'
name: 'MIRAQLS: MIRAQLS: Mid-infrared Quantum Technology for Sensing'
- _id: '190'
name: 'E2TPA: Exploiting Entangled Two-Photon Absorption'
publication: New Journal of Physics
publication_identifier:
issn:
- 1367-2630
publication_status: published
publisher: IOP Publishing
status: public
title: Ultra-broadband non-degenerate guided-wave bi-photon source in the near and
mid-infrared
type: journal_article
user_id: '78890'
volume: 26
year: '2024'
...
---
_id: '47997'
abstract:
- lang: eng
text: The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising
material group for applications in quantum and nonlinear optics. The fabrication
of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric
domain structures, requires a profound understanding of the material properties
and crystal structure. In this regard, Raman spectroscopy offers the possibility
to study and visualize domain structures, strain, defects, and the local stoichiometry,
which are all factors impacting device performance. However, the accurate interpretation
of Raman spectra and their changes with respect to extrinsic and intrinsic defects
requires a thorough assignment of the Raman modes to their respective crystal
features, which to date is only partly conducted based on phenomenological modelling.
To address this issue, we calculated the phonon spectra of potassium titanyl phosphate
and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium
titanyl arsenate (KTiOAsO4) based on density functional theory and compared them
with experimental data. Overall, this allows us to assign various spectral features
to eigenmodes of lattice substructures with improved detail compared to previous
assignments. Nevertheless, the analysis also shows that not all features of the
spectra can unambigiously be explained yet. A possible explanation might be that
defects or long range fields not included in the modeling play a crucial rule
for the resulting Raman spectrum. In conclusion, this work provides an improved
foundation into the vibrational properties in the KTiOPO4 material family.
article_number: '1423'
author:
- first_name: Sergej
full_name: Neufeld, Sergej
last_name: Neufeld
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
citation:
ama: Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium
Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423
apa: Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn,
C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties
of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10),
Article 1423. https://doi.org/10.3390/cryst13101423
bibtex: '@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023,
title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family},
volume={13}, DOI={10.3390/cryst13101423},
number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej
and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard
and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing,
Michael}, year={2023} }'
chicago: Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard
Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing.
“Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals
13, no. 10 (2023). https://doi.org/10.3390/cryst13101423.
ieee: 'S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl
Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023,
doi: 10.3390/cryst13101423.'
mla: Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate
Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.
short: S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn,
L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).
date_created: 2023-10-11T09:10:53Z
date_updated: 2023-10-11T09:15:58Z
department:
- _id: '169'
doi: 10.3390/cryst13101423
funded_apc: '1'
intvolume: ' 13'
issue: '10'
keyword:
- Inorganic Chemistry
- Condensed Matter Physics
- General Materials Science
- General Chemical Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3390/cryst13101423
oa: '1'
project:
- _id: '168'
grant_number: '231447078'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family
type: journal_article
user_id: '22501'
volume: 13
year: '2023'
...
---
_id: '48399'
abstract:
- lang: eng
text: Quantum photonic processing via electro-optic components typically
requires electronic links across different operation environments, especially
when interfacing cryogenic components such as superconducting single photon detectors
with room-temperature control and readout electronics. However, readout and driving
electronics can introduce detrimental parasitic effects. Here we show an all-optical
control and readout of a superconducting nanowire single photon detector (SNSPD),
completely electrically decoupled from room temperature electronics. We provide
the operation power for the superconducting detector via a cryogenic photodiode,
and readout single photon detection signals via a cryogenic electro-optic modulator
in the same cryostat. This method opens the possibility for control and readout
of superconducting circuits, and feedforward for photonic quantum computing.
article_number: '32717'
author:
- first_name: Frederik
full_name: Thiele, Frederik
id: '50819'
last_name: Thiele
orcid: 0000-0003-0663-5587
- first_name: Thomas
full_name: Hummel, Thomas
id: '83846'
last_name: Hummel
- first_name: Adam N.
full_name: McCaughan, Adam N.
last_name: McCaughan
- first_name: Julian
full_name: Brockmeier, Julian
id: '44807'
last_name: Brockmeier
- first_name: Maximilian
full_name: Protte, Maximilian
id: '46170'
last_name: Protte
- first_name: Victor
full_name: Quiring, Victor
last_name: Quiring
- first_name: Sebastian
full_name: Lengeling, Sebastian
id: '44373'
last_name: Lengeling
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Tim
full_name: Bartley, Tim
id: '49683'
last_name: Bartley
citation:
ama: Thiele F, Hummel T, McCaughan AN, et al. All optical operation of a superconducting
photonic interface. Optics Express. 2023;31(20). doi:10.1364/oe.492035
apa: Thiele, F., Hummel, T., McCaughan, A. N., Brockmeier, J., Protte, M., Quiring,
V., Lengeling, S., Eigner, C., Silberhorn, C., & Bartley, T. (2023). All optical
operation of a superconducting photonic interface. Optics Express, 31(20),
Article 32717. https://doi.org/10.1364/oe.492035
bibtex: '@article{Thiele_Hummel_McCaughan_Brockmeier_Protte_Quiring_Lengeling_Eigner_Silberhorn_Bartley_2023,
title={All optical operation of a superconducting photonic interface}, volume={31},
DOI={10.1364/oe.492035}, number={2032717},
journal={Optics Express}, publisher={Optica Publishing Group}, author={Thiele,
Frederik and Hummel, Thomas and McCaughan, Adam N. and Brockmeier, Julian and
Protte, Maximilian and Quiring, Victor and Lengeling, Sebastian and Eigner, Christof
and Silberhorn, Christine and Bartley, Tim}, year={2023} }'
chicago: Thiele, Frederik, Thomas Hummel, Adam N. McCaughan, Julian Brockmeier,
Maximilian Protte, Victor Quiring, Sebastian Lengeling, Christof Eigner, Christine
Silberhorn, and Tim Bartley. “All Optical Operation of a Superconducting Photonic
Interface.” Optics Express 31, no. 20 (2023). https://doi.org/10.1364/oe.492035.
ieee: 'F. Thiele et al., “All optical operation of a superconducting photonic
interface,” Optics Express, vol. 31, no. 20, Art. no. 32717, 2023, doi:
10.1364/oe.492035.'
mla: Thiele, Frederik, et al. “All Optical Operation of a Superconducting Photonic
Interface.” Optics Express, vol. 31, no. 20, 32717, Optica Publishing Group,
2023, doi:10.1364/oe.492035.
short: F. Thiele, T. Hummel, A.N. McCaughan, J. Brockmeier, M. Protte, V. Quiring,
S. Lengeling, C. Eigner, C. Silberhorn, T. Bartley, Optics Express 31 (2023).
date_created: 2023-10-24T06:43:16Z
date_updated: 2023-11-27T08:43:33Z
doi: 10.1364/oe.492035
intvolume: ' 31'
issue: '20'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: All optical operation of a superconducting photonic interface
type: journal_article
user_id: '50819'
volume: 31
year: '2023'
...
---
_id: '54852'
abstract:
- lang: eng
text: The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising
material group for applications in quantum and nonlinear optics. The fabrication
of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric
domain structures, requires a profound understanding of the material properties
and crystal structure. In this regard, Raman spectroscopy offers the possibility
to study and visualize domain structures, strain, defects, and the local stoichiometry,
which are all factors impacting device performance. However, the accurate interpretation
of Raman spectra and their changes with respect to extrinsic and intrinsic defects
requires a thorough assignment of the Raman modes to their respective crystal
features, which to date is only partly conducted based on phenomenological modelling.
To address this issue, we calculated the phonon spectra of potassium titanyl phosphate
and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium
titanyl arsenate (KTiOAsO4) based on density functional theory and compared them
with experimental data. Overall, this allows us to assign various spectral features
to eigenmodes of lattice substructures with improved detail compared to previous
assignments. Nevertheless, the analysis also shows that not all features of the
spectra can unambigiously be explained yet. A possible explanation might be that
defects or long range fields not included in the modeling play a crucial rule
for the resulting Raman spectrum. In conclusion, this work provides an improved
foundation into the vibrational properties in the KTiOPO4 material family.
article_number: '1423'
author:
- first_name: Sergej
full_name: Neufeld, Sergej
last_name: Neufeld
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
citation:
ama: Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium
Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423
apa: Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn,
C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties
of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10),
Article 1423. https://doi.org/10.3390/cryst13101423
bibtex: '@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023,
title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family},
volume={13}, DOI={10.3390/cryst13101423},
number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej
and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard
and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing,
Michael}, year={2023} }'
chicago: Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard
Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing.
“Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals
13, no. 10 (2023). https://doi.org/10.3390/cryst13101423.
ieee: 'S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl
Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023,
doi: 10.3390/cryst13101423.'
mla: Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate
Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.
short: S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn,
L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).
date_created: 2024-06-24T06:15:00Z
date_updated: 2024-06-24T06:30:23Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '288'
- _id: '230'
- _id: '429'
doi: 10.3390/cryst13101423
intvolume: ' 13'
issue: '10'
language:
- iso: eng
project:
- _id: '53'
grant_number: '231447078'
name: 'TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden
Konzepten zu funktionellen Strukturen'
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
status: public
title: Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family
type: journal_article
user_id: '16199'
volume: 13
year: '2023'
...
---
_id: '45850'
abstract:
- lang: eng
text: Interference between single photons is key for many quantum optics experiments
and applications in quantum technologies, such as quantum communication or computation.
It is advantageous to operate the systems at telecommunication wavelengths and
to integrate the setups for these applications in order to improve stability,
compactness and scalability. A new promising material platform for integrated
quantum optics is lithium niobate on insulator (LNOI). Here, we realise Hong-Ou-Mandel
(HOM) interference between telecom photons from an engineered parametric down-conversion
source in an LNOI directional coupler. The coupler has been designed and fabricated
in house and provides close to perfect balanced beam splitting. We obtain a raw
HOM visibility of (93.5 ± 0.7) %, limited mainly by the source performance and
in good agreement with off-chip measurements. This lays the foundation for more
sophisticated quantum experiments in LNOI.
article_number: '23140'
author:
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Federico
full_name: Pegoraro, Federico
id: '88928'
last_name: Pegoraro
- first_name: Philip
full_name: Held, Philip
id: '68236'
last_name: Held
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference
in an LNOI directional coupler. Optics Express. 2023;31(14). doi:10.1364/oe.484126
apa: Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F.,
Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., & Silberhorn,
C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional
coupler. Optics Express, 31(14), Article 23140. https://doi.org/10.1364/oe.484126
bibtex: '@article{Babel_Bollmers_Massaro_Luo_Stefszky_Pegoraro_Held_Herrmann_Eigner_Brecht_et
al._2023, title={Demonstration of Hong-Ou-Mandel interference in an LNOI directional
coupler}, volume={31}, DOI={10.1364/oe.484126},
number={1423140}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Babel, Silia and Bollmers, Laura and Massaro, Marcello and Luo, Kai Hong
and Stefszky, Michael and Pegoraro, Federico and Held, Philip and Herrmann, Harald
and Eigner, Christof and Brecht, Benjamin and et al.}, year={2023} }'
chicago: Babel, Silia, Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky,
Federico Pegoraro, Philip Held, et al. “Demonstration of Hong-Ou-Mandel Interference
in an LNOI Directional Coupler.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.484126.
ieee: 'S. Babel et al., “Demonstration of Hong-Ou-Mandel interference in
an LNOI directional coupler,” Optics Express, vol. 31, no. 14, Art. no.
23140, 2023, doi: 10.1364/oe.484126.'
mla: Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI
Directional Coupler.” Optics Express, vol. 31, no. 14, 23140, Optica Publishing
Group, 2023, doi:10.1364/oe.484126.
short: S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P.
Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express
31 (2023).
date_created: 2023-07-03T14:08:36Z
date_updated: 2023-07-05T07:58:31Z
department:
- _id: '15'
- _id: '230'
- _id: '623'
- _id: '288'
doi: 10.1364/oe.484126
intvolume: ' 31'
issue: '14'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler
type: journal_article
user_id: '63231'
volume: 31
year: '2023'
...
---
_id: '61362'
abstract:
- lang: eng
text: We study the interaction of gray tracking and DC ionic conductivity
in Potassium Titanyl Phosphate (KTiOPO4, KTP) and present
a novel way to reduce conductivity via a potassium nitrate treatment improving
the device quality.
author:
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Viktor
full_name: Quiring, Viktor
last_name: Quiring
- first_name: Adriana
full_name: Bocchini, Adriana
id: '58349'
last_name: Bocchini
orcid: 0000-0002-2134-3075
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- 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
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: 'Eigner C, Padberg L, Quiring V, et al. Potassium Titanyl Phosphate Material
Engineering Boosting Integrated Optical Source Performance. In: CLEO 2023.
Optica Publishing Group; 2023. doi:10.1364/cleo_at.2023.jw2a.57'
apa: Eigner, C., Padberg, L., Quiring, V., Bocchini, A., Santandrea, M., Gerstmann,
U., Schmidt, W. G., & Silberhorn, C. (2023). Potassium Titanyl Phosphate Material
Engineering Boosting Integrated Optical Source Performance. CLEO 2023.
https://doi.org/10.1364/cleo_at.2023.jw2a.57
bibtex: '@inproceedings{Eigner_Padberg_Quiring_Bocchini_Santandrea_Gerstmann_Schmidt_Silberhorn_2023,
title={Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical
Source Performance}, DOI={10.1364/cleo_at.2023.jw2a.57},
booktitle={CLEO 2023}, publisher={Optica Publishing Group}, author={Eigner, Christof
and Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo
and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine}, year={2023}
}'
chicago: Eigner, Christof, Laura Padberg, Viktor Quiring, Adriana Bocchini, Matteo
Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, and Christine Silberhorn. “Potassium
Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance.”
In CLEO 2023. Optica Publishing Group, 2023. https://doi.org/10.1364/cleo_at.2023.jw2a.57.
ieee: 'C. Eigner et al., “Potassium Titanyl Phosphate Material Engineering
Boosting Integrated Optical Source Performance,” 2023, doi: 10.1364/cleo_at.2023.jw2a.57.'
mla: Eigner, Christof, et al. “Potassium Titanyl Phosphate Material Engineering
Boosting Integrated Optical Source Performance.” CLEO 2023, Optica Publishing
Group, 2023, doi:10.1364/cleo_at.2023.jw2a.57.
short: 'C. Eigner, L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann,
W.G. Schmidt, C. Silberhorn, in: CLEO 2023, Optica Publishing Group, 2023.'
date_created: 2025-09-18T12:06:19Z
date_updated: 2025-09-18T12:08:56Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '790'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '27'
doi: 10.1364/cleo_at.2023.jw2a.57
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
- _id: '54'
name: TRR 142 - Project Area A
- _id: '55'
name: TRR 142 - Project Area B
- _id: '168'
name: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat
(B07*)
- _id: '166'
name: TRR 142 - Subproject A11
publication: CLEO 2023
publication_status: published
publisher: Optica Publishing Group
status: public
title: Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical
Source Performance
type: conference
user_id: '16199'
year: '2023'
...