@article{33672,
abstract = {{Abstract
Lithium niobate is a promising platform for integrated quantum optics. In this platform, we aim to efficiently manipulate and detect quantum states by combining superconducting single photon detectors and modulators. The cryogenic operation of a superconducting single photon detector dictates the optimisation of the electro-optic modulators under the same operating conditions. To that end, we characterise a phase modulator, directional coupler, and polarisation converter at both ambient and cryogenic temperatures. The operation voltage
V
π
/
2
of these modulators increases, due to the decrease in the electro-optic effect, by 74% for the phase modulator, 84% for the directional coupler and 35% for the polarisation converter below 8.5
K
. The phase modulator preserves its broadband nature and modulates light in the characterised wavelength range. The unbiased bar state of the directional coupler changed by a wavelength shift of 85
n
m
while cooling the device down to 5
K
. The polarisation converter uses periodic poling to phasematch the two orthogonal polarisations. The phasematched wavelength of the utilised poling changes by 112
n
m
when cooling to 5
K
.}},
author = {{Thiele, Frederik and vom Bruch, Felix and Brockmeier, Julian and Protte, Maximilian and Hummel, Thomas and Ricken, Raimund and Quiring, Viktor and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}},
issn = {{2515-7647}},
journal = {{Journal of Physics: Photonics}},
keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
number = {{3}},
publisher = {{IOP Publishing}},
title = {{{Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides}}},
doi = {{10.1088/2515-7647/ac6c63}},
volume = {{4}},
year = {{2022}},
}
@article{33673,
abstract = {{ Superconducting Nanowire Single Photon Detectors (SNSPDs) have become an integral part of quantum optics in recent years because of their high performance in single photon detection. We present a method to replace the electrical input by supplying the required bias current via the photocurrent of a photodiode situated on the cold stage of the cryostat. Light is guided to the bias photodiode through an optical fiber, which enables a lower thermal conduction and galvanic isolation between room temperature and the cold stage. We show that an off-the-shelf InGaAs–InP photodiode exhibits a responsivity of at least 0.55 A/W at 0.8 K. Using this device to bias an SNSPD, we characterize the count rate dependent on the optical power incident on the photodiode. This configuration of the SNSPD and photodiode shows an expected plateau in the single photon count rate with an optical bias power on the photodiode above 6.8 µW. Furthermore, we compare the same detector under both optical and electrical bias, and show there is no significant changes in performance. This has the advantage of avoiding an electrical input cable, which reduces the latent heat load by a factor of 100 and, in principle, allows for low loss RF current supply at the cold stage. }},
author = {{Thiele, Frederik and Hummel, Thomas and Protte, Maximilian and Bartley, Tim}},
issn = {{2378-0967}},
journal = {{APL Photonics}},
keywords = {{Computer Networks and Communications, Atomic and Molecular Physics, and Optics}},
number = {{8}},
publisher = {{AIP Publishing}},
title = {{{Opto-electronic bias of a superconducting nanowire single photon detector using a cryogenic photodiode}}},
doi = {{10.1063/5.0097506}},
volume = {{7}},
year = {{2022}},
}
@article{36524,
abstract = {{How can Knowledge In/Equity be addressed in qualitative research by taking the idea of Open Science into account? Two projects from the Open Science Fellows Programme by Wikimedia Deutschland will be used to illustrate how Open Science practices can succeed in qualitative research, thereby reducing In/Equity. In this context, In/Equity is considered as a fair and equal representation of people, their knowledge and insights and comprehends questions about how epistemic, structural, institutional and personal biases generate and shape knowledge as guidance. Three questions guide this approach: firstly, what do we understand by In/Equity in the context of knowledge production in these projects? Secondly, who will be involved in knowledge generation and to what extent will they be valued or unvalued? Thirdly, how can data be made accessible for re-use to enable true participation and sharing?}},
author = {{Steinhardt, Isabel and Kruschick, Felicitas}},
issn = {{2367-7163}},
journal = {{Research Ideas and Outcomes}},
keywords = {{Open Science, Knowledge Equity, Qualitative Methods}},
pages = {{e86387}},
publisher = {{Pensoft Publishers}},
title = {{{Knowledge Equity and Open Science in qualitative research – Practical research considerations}}},
doi = {{10.3897/rio.8.e86387}},
volume = {{8}},
year = {{2022}},
}
@article{36538,
abstract = {{Der Beitrag beschäftigt sich mit dem Gebrauch von sogenannten Open Educational Resources (OER) innerhalb der deutschsprachigen Soziologie. OER sind Lehr-und Lernmaterialien, die öffent-lich und frei von Kosten zugänglich sind sowie unter einer offenen Lizenz stehen, die es erlaubt, das Material frei zu nutzen, zu vervielfältigen und zu bearbeiten. Um diese Form der Bereitstellung von Lehr-und Lernmaterial zu fördern, sind im deutschen Sprachraum in den letzten Jahren verschie-dene digitale Infrastrukturen entstanden, die an einzelnen Hochschulstandorten, aber auch hochschulübergreifend Lehrenden zur Verfügung stehen, um dort ihr Material zu veröffentlichen. Es wurden 37 dieser Repositorien untersucht. Darüber hinaus wurde auch die Videoplattform YouTube nach soziologischem Lehr-und Lernmaterial durchforstet. Der Beitrag stellt den Zeitverlauf und die Akteur:innen der OER-Veröffentlichungen dar. Anschließend soll mithilfe eines praxistheoretischen Vokabulars die Lehre innerhalb der Soziologie aufgeschlüsselt und ein möglicher Bezug zu den empirischen Ergebnissen hergestellt werden.}},
author = {{Hiebl, Johannes and Steinhardt, Isabel and Bigos, Michael}},
issn = {{2199-8825}},
journal = {{die hochschule}},
keywords = {{Soziologie, Praxistheorie, Repositorien, Open Educational Resources, OER}},
number = {{8}},
pages = {{379--394}},
title = {{{Die (Un-)Sichtbarkeit von (offenen) Bildungsmaterialien in der Soziologie}}},
doi = {{10.3278/HSL2227W}},
year = {{2022}},
}
@inbook{36526,
abstract = {{Der Beitrag geht der Frage nach, welchen Herausforderungen Lehrende durch die digitale Lehre im ersten Corona-Semester 2020 begegnet sind und welche Strategien sie für deren Bewältigung gewählt haben. Als Datengrundlage dienendazu sechs autoethnographische Stories, entstanden im Projekt AEDiL. Diese haben sich als wertvolles Material erwiesen, um unmittelbare Einblicke in das Lehrhandeln und die -planung zu erhalten und die weiterführende Analyse zu ermöglichen. Dabei offenbarte sich der gemeinsame Anspruch der studierenden-zentrierten Lehre als wiederkehrendes Muster. Die mehrstufige Analyse legt offen, wie Lehrpersonen mit den Themen Beziehungsaufbau, Schaffung eines (digitalen) Raums sowie Sicherheit für Studierende umgehen und sich daraus Handlungsmuster entwickeln.}},
author = {{Ternes, Doris and Bernhard, Nadine and Gewinner, Irina and Goller, Antje and Lohner, David and König, Karsten and Röwert, Ronny and Steinhardt, Isabel and Thielsch, Angelika}},
booktitle = {{Hochschulen in der Pandemie. Impulse für eine nachhaltige Entwicklung von Studium und Lehre}},
editor = {{Angenent, Holger and Petri, Jörg and Zimenkova, Tatiana}},
isbn = {{ 978-3-8376-5984-9}},
pages = {{400--414}},
publisher = {{transkript}},
title = {{{Dem eigenen Anspruch auf der Spur}}},
doi = {{10.5445/IR/1000145819 }},
year = {{2022}},
}
@misc{47538,
author = {{Lammer, Christina}},
keywords = {{Kathleen Vereecken, Kinder- und Jugendliteratur, Krieg, Belgien}},
publisher = {{www.kibum.de (Thomas Boyken und Jörn Brüggemann)}},
title = {{{Die Kraft der Bilder. Funktionen neuer Illustrationen bei Übersetzungen. Kathleen Vereecken – Alles komt goed, altijd (2018) | Alles wird gut, immer (2021)}}},
year = {{2022}},
}
@misc{36109,
author = {{Knorr, Lukas and Schlosser, Florian and Meschede, Henning}},
publisher = {{17th sdewes conference}},
title = {{{Assessment of Energy Efficiency and Flexibility Measures in Electrified Process Heat Generation Based on Simulations in the Animal Feed Industry}}},
year = {{2022}},
}
@article{37019,
abstract = {{Der hier vorliegende Beitrag erarbeitet Verbindungslinien zwischen Wirtschaftssoziologie (insb. Finanzsoziologie), Soziologie der Bewertung und Körpersoziologie anhand des Falls finanzmarktregulatorischer Risikobewertung. Dabei spielt der analytische Begriff der Prothese (Michel Callon) eine wichtige Rolle. Nach der Finanzkrise kommt es zu einer Neuverteilung von sensorischen Bewertungskompetenzen in einer hierarchisch aufgebauten, vernetzten Wissensarchitektur. Es ist nun die Maschine, der Lebendigkeit attestiert wird, während der Mensch parzellierte Funktionen in einer Apparatur übernimmt. Gleichzeitig soll der Mensch so zu einem adäquaten und beweglichen (spielerischen) Umgang mit Risiken angeregt werden, die man ihm/ihr in einem eher groben und einfachen Aufsichtssystem nicht mehr zutraute (hier wurden „regulatory arbitrage“ und „kreative Buchführung“ zum Problem). Der Aufsatz rekonstruiert die praktischen Orientierungen und kollektiven Erfahrungen dieses finanzaufsichtlichen Umbaus anhand zweier problemzentrierter Interviews. Unter Rekurs auf die Körperbezüge in diesen Interviews wird die Paradoxie eines Systems herausgearbeitet, das nach wie vor auf individuelle Entscheidungsrationalität und -agilität setzt, diese nun aber maschinell zu erschaffen sucht.}},
author = {{Knoll, Lisa}},
issn = {{1011-0070}},
journal = {{Österreichische Zeitschrift für Soziologie}},
keywords = {{General Social Sciences}},
number = {{3}},
pages = {{305--317}},
publisher = {{Springer Science and Business Media LLC}},
title = {{{Von lebenden Systemen und gefühlten Zahlen. Eine körpersoziologische Analyse des finanzaufsichtlichen Risikobewertungsregimes}}},
doi = {{10.1007/s11614-022-00501-3}},
volume = {{47}},
year = {{2022}},
}
@inbook{47621,
author = {{Althoff, Sebastian}},
booktitle = {{Mimesis Expanded: Die Ausweitung der mimetischen Zone}},
editor = {{Balke, Friedrich and Linseisen, Elisa}},
pages = {{343–362}},
publisher = {{Wilhelm Fink}},
title = {{{Zweierlei Homophilie: Wendy Hui Kyong Chun und Leo Bersani}}},
doi = {{10.30965/9783846764947_016}},
year = {{2022}},
}
@misc{47666,
author = {{Miggelbrink, Monique}},
booktitle = {{Cargo H. 56}},
pages = {{72--74}},
title = {{{Musterbildungen. Ein alternativer Zugang zur Fernsehgeschichte: Über Lynn Spigels TV Snapshots – An Archive of Everyday Life}}},
year = {{2022}},
}
@article{47670,
abstract = {{PurposeThe purpose of this paper is to revisit the disastrous DaimlerChrysler AG takeover episode from 1998 to 2007 in order to arrive at a more comprehensive explanation of this and other merger and takeover failures based on institutional theory.Design/methodology/approachThe case study is based on various secondary sources of information and on the insights that one of the authors gained from working for 14 years in various positions for Daimler-Benz and DaimlerChrysler.FindingsDaimlerChrysler failed because top management made mistakes in trying to globalize the company. They were unable to realize possible synergies between the two companies, which brought complementary resources into the merger. Furthermore, they did not account for the institutional embeddedness of strategies when they adopted lean production globally, diffused the production system developed in Germany to other parts of the world and tried to implement a global stock enlisted in New York and Frankfurt. The underlying theoretical framework is relevant for other merger and acquisition cases. It features institutional embeddedness, path dependency and institutional arbitrage.Originality/valueThe paper develops an institutional perspective on DaimlerChrysler and on cross-border merger and acquisition failure more generally. The perspective is organized around the varieties-of-capitalism approach. This contribution is important because there is increasing dissatisfaction with the dominant explanation of cross-border merger and acquisition failure, which is based on the allegedly failed management of culture “clashes.”}},
author = {{Riach, John Rankin Wood and Schneider, Martin}},
issn = {{2059-5794}},
journal = {{Cross Cultural and Strategic Management}},
keywords = {{Organizational Behavior and Human Resource Management, Strategy and Management, Sociology and Political Science, Cultural Studies, Business and International Management}},
number = {{3}},
pages = {{552--568}},
publisher = {{Emerald}},
title = {{{The DaimlerChrysler takeover failure revisited from a varieties-of-capitalism perspective}}},
doi = {{10.1108/ccsm-12-2020-0250}},
volume = {{29}},
year = {{2022}},
}
@inproceedings{27531,
abstract = {{The Quantum Singular Value Transformation (QSVT) is a recent technique that
gives a unified framework to describe most quantum algorithms discovered so
far, and may lead to the development of novel quantum algorithms. In this paper
we investigate the hardness of classically simulating the QSVT. A recent result
by Chia, Gily\'en, Li, Lin, Tang and Wang (STOC 2020) showed that the QSVT can
be efficiently "dequantized" for low-rank matrices, and discussed its
implication to quantum machine learning. In this work, motivated by
establishing the superiority of quantum algorithms for quantum chemistry and
making progress on the quantum PCP conjecture, we focus on the other main class
of matrices considered in applications of the QSVT, sparse matrices.
We first show how to efficiently "dequantize", with arbitrarily small
constant precision, the QSVT associated with a low-degree polynomial. We apply
this technique to design classical algorithms that estimate, with constant
precision, the singular values of a sparse matrix. We show in particular that a
central computational problem considered by quantum algorithms for quantum
chemistry (estimating the ground state energy of a local Hamiltonian when
given, as an additional input, a state sufficiently close to the ground state)
can be solved efficiently with constant precision on a classical computer. As a
complementary result, we prove that with inverse-polynomial precision, the same
problem becomes BQP-complete. This gives theoretical evidence for the
superiority of quantum algorithms for chemistry, and strongly suggests that
said superiority stems from the improved precision achievable in the quantum
setting. We also discuss how this dequantization technique may help make
progress on the central quantum PCP conjecture.}},
author = {{Gharibian, Sevag and Gall, François Le}},
booktitle = {{Proceedings of the 54th ACM Symposium on Theory of Computing (STOC)}},
pages = {{19--32}},
title = {{{Dequantizing the Quantum Singular Value Transformation: Hardness and Applications to Quantum Chemistry and the Quantum PCP Conjecture}}},
year = {{2022}},
}
@book{47869,
author = {{Tenberge, Claudia and von Braunmühl, Susanne }},
publisher = {{Friedrich Verlag}},
title = {{{Ich. Das bin ich! Zugehörigkeit, Freundschaft und Familie. Zyklus 2}}},
year = {{2022}},
}
@book{47872,
author = {{Tenberge, Claudia and von Braunmühl, Susanne}},
publisher = {{Friedrich Verlag}},
title = {{{Lebensformen, Welt, Gesellschaft. Alltagsleben, Gemeinschaft und Feste. Zyklus 2. }}},
year = {{2022}},
}
@book{47871,
author = {{Tenberge, Claudia and von Braunmühl, Susanne}},
title = {{{Ich und die anderen. Zugehörigkeit, Freundschaft und Familie. Zyklus 2.}}},
year = {{2022}},
}
@book{47883,
author = {{Tenberge, Claudia and von Braunmühl, Susanne}},
publisher = {{Friedrich Verlag}},
title = {{{Kultur und Kommunikation. Religion, Sprache und Verständigung. Zyklus 3. }}},
year = {{2022}},
}
@book{47884,
author = {{Tenberge, Claudia and von Braunmühl, Susanne}},
publisher = {{Friedrich Verlag}},
title = {{{Große Fragen. Welt und Wahrheit. Leben und Tod. Zyklus 3.}}},
year = {{2022}},
}
@book{47881,
author = {{Tenberge, Claudia and von Braunmühl, Susanne}},
title = {{{Lebensformen, Welt, Gesellschaft. Normen und Werte - Religionen und Kulturen. Zyklus 3.}}},
year = {{2022}},
}
@book{47882,
author = {{Tenberge, Claudia and von Braunmühl, Susanne}},
title = {{{Mensch, Natur, Technik. Lebenswelt, Information und Sprache. Zyklus 3. }}},
year = {{2022}},
}
@article{47984,
abstract = {{Recent analyses by polarization resolved second-harmonic (SH) microscopy have demonstrated that ferroelectric (FE) domain walls (DWs) can possess non-Ising wall characteristics and topological nature. These analyses rely on locally analyzing the properties, directionality, and magnitude of the second-order nonlinear tensor. However, when inspecting FE DWs with SH microscopy, a manifold of different effects may contribute to the observed signal difference between domains and DWs, i.e., far-field interference, Čerenkov-type phase-matching (CSHG), and changes in the aforementioned local nonlinear optical properties. They all might be present at the same time and, therefore, require careful interpretation and separation. In this work, we demonstrate how the particularly strong Čerenkov-type contrast can selectively be blocked using dark- and bright-field SH microscopy. Based on this approach, we show that other contrast mechanisms emerge that were previously overlayed by CSHG but can now be readily selected through the appropriate experimental geometry. Using the methods presented, we show that the strength of the CSHG contrast compared to the other mechanisms is approximately 22 times higher. This work lays the foundation for the in-depth analysis of FE DW topologies by SH microscopy.}},
author = {{Hegarty, Peter A. and Beccard, Henrik and Eng, Lukas M. and Rüsing, Michael}},
issn = {{0021-8979}},
journal = {{Journal of Applied Physics}},
keywords = {{General Physics and Astronomy}},
number = {{24}},
publisher = {{AIP Publishing}},
title = {{{Turn all the lights off: Bright- and dark-field second-harmonic microscopy to select contrast mechanisms for ferroelectric domain walls}}},
doi = {{10.1063/5.0094988}},
volume = {{131}},
year = {{2022}},
}