@article{39653,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>A detailed investigation of the energy levels of perylene-3,4,9,10-tetracarboxylic tetraethylester as a representative compound for the whole family of perylene esters was performed. It was revealed via electrochemical measurements that one oxidation and two reductions take place. The bandgaps determined via the electrochemical approach are in good agreement with the optical bandgap obtained from the absorption spectra via a Tauc plot. In addition, absorption spectra in dependence of the electrochemical potential were the basis for extensive quantum-chemical calculations of the neutral, monoanionic, and dianionic molecules. For this purpose, calculations based on density functional theory were compared with post-Hartree–Fock methods and the CAM-B3LYP functional proved to be the most reliable choice for the calculation of absorption spectra. Furthermore, spectral features found experimentally could be reproduced with vibronic calculations and allowed to understand their origins. In particular, the two lowest energy absorption bands of the anion are not caused by absorption of two distinct electronic states, which might have been expected from vertical excitation calculations, but both states exhibit a strong vibronic progression resulting in contributions to both bands.</jats:p>}},
  author       = {{Wiebeler, Christian and Vollbrecht, Joachim and Neuba, Adam and Kitzerow, Heinz-Siegfried and Schumacher, Stefan}},
  issn         = {{2045-2322}},
  journal      = {{Scientific Reports}},
  keywords     = {{Multidisciplinary}},
  number       = {{1}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Unraveling the electrochemical and spectroscopic properties of neutral and negatively charged perylene tetraethylesters}}},
  doi          = {{10.1038/s41598-021-95551-0}},
  volume       = {{11}},
  year         = {{2021}},
}

@article{40434,
  author       = {{Klement, Philip and Dehnhardt, Natalie and Dong, Chuan-Ding and Dobener, Florian and Bayliff, Samuel and Winkler, Julius and Hofmann, Detlev M. and Klar, Peter J. and Schumacher, Stefan and Chatterjee, Sangam and Heine, Johanna}},
  issn         = {{0935-9648}},
  journal      = {{Advanced Materials}},
  keywords     = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}},
  number       = {{23}},
  publisher    = {{Wiley}},
  title        = {{{Atomically Thin Sheets of Lead‐Free 1D Hybrid Perovskites Feature Tunable White‐Light Emission from Self‐Trapped Excitons}}},
  doi          = {{10.1002/adma.202100518}},
  volume       = {{33}},
  year         = {{2021}},
}

@article{24975,
  author       = {{Franz, Martin and Chandola, Sandhya and Koy, Maximilian and Zielinski, Robert and Aldahhak, Hazem and Das, Mowpriya and Freitag, Matthias and Gerstmann, Uwe and Liebig, Denise and Hoffmann, Adrian Karl and Rosin, Maximilian and Schmidt, Wolf Gero and Hogan, Conor and Glorius, Frank and Esser, Norbert and Dähne, Mario}},
  issn         = {{1755-4330}},
  journal      = {{Nature Chemistry}},
  pages        = {{828--835}},
  title        = {{{Controlled growth of ordered monolayers of N-heterocyclic carbenes on silicon}}},
  doi          = {{10.1038/s41557-021-00721-2}},
  year         = {{2021}},
}

@article{23418,
  abstract     = {{Density-functional theory within a Berry-phase formulation of the dynamical polarization is used to determine the second-order susceptibility χ(2) of lithium niobate (LiNbO3). Defect trapped polarons and bipolarons are found to strongly enhance the nonlinear susceptibility of the material, in particular if localized at NbV–VLi defect pairs. This is essentially a consequence of the polaronic excitation resulting in relaxation-induced gap states. The occupation of these levels leads to strongly enhanced χ(2) coefficients and allows for the spatial and transient modification of the second-harmonic generation of macroscopic samples.}},
  author       = {{Kozub, Agnieszka L. and Schindlmayr, Arno and Gerstmann, Uwe and Schmidt, Wolf Gero}},
  issn         = {{2469-9969}},
  journal      = {{Physical Review B}},
  pages        = {{174110}},
  publisher    = {{American Physical Society}},
  title        = {{{Polaronic enhancement of second-harmonic generation in lithium niobate}}},
  doi          = {{10.1103/PhysRevB.104.174110}},
  volume       = {{104}},
  year         = {{2021}},
}

@inproceedings{23475,
  author       = {{Rose, Hendrik and Paul, Jagannath and Wahlstrand, Jared K. and Bristow, Alan D. and Meier, Torsten}},
  booktitle    = {{Ultrafast Phenomena and Nanophotonics XXV}},
  editor       = {{Betz, Markus and Elezzabi, Abdulhakem Y.}},
  title        = {{{Theoretical analysis and simulations of two-dimensional Fourier transform spectroscopy performed on exciton-polaritons of a quantum-well microcavity system}}},
  doi          = {{10.1117/12.2576696}},
  volume       = {{11684}},
  year         = {{2021}},
}

@article{37333,
  author       = {{Krauss-Kodytek, L. and Hannes, W.-R. and Meier, Torsten and Ruppert, C. and Betz, M.}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{8}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Nondegenerate two-photon absorption in ZnSe: Experiment and theory}}},
  doi          = {{10.1103/physrevb.104.085201}},
  volume       = {{104}},
  year         = {{2021}},
}

@article{21547,
  author       = {{Riabinin, Matvei and Sharapova, Polina and Bartley, Tim and Meier, Torsten}},
  issn         = {{2399-6528}},
  journal      = {{Journal of Physics Communications}},
  number       = {{4}},
  title        = {{{Generating two-mode squeezing with multimode measurement-induced nonlinearity}}},
  doi          = {{10.1088/2399-6528/abeec2}},
  volume       = {{5}},
  year         = {{2021}},
}

@article{23472,
  author       = {{Krauss-Kodytek, L. and Hannes, Wolf-Rüdiger and Meier, Torsten and Ruppert, C. and Betz, M.}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{8}},
  title        = {{{Nondegenerate two-photon absorption in ZnSe: Experiment and theory}}},
  doi          = {{10.1103/physrevb.104.085201}},
  volume       = {{104}},
  year         = {{2021}},
}

@misc{35839,
  abstract     = {{Erklärvideos gewinnen auch im Kontext des Physikunterrichts verstärkt an Relevanz. Um zu evaluieren, welche Gestaltungsaspekte ein wirkungsvolles Erklärvideo ausmachen, ist es das Ziel der vorliegenden Masterarbeit herauszufinden, welchen Einfluss die kohärente Gestaltung eines Erklärvideos hat. Dazu wird die Forschungsfrage gestellt: „Welchen Einfluss hat die kohärente Gestaltung eines Erklärvideos auf den dadurch hervorgerufenen Lernzuwachs im Vergleich zu einem in der Hinsicht nicht optimierten Video?“ Um die Forschungsfrage zu beantworten, ist eine quantitative Studie im Prä- und Posttestdesign mit Schüler:innen der Jahrgangsstufe Q1 durchgeführt worden. Außerdem wurde in verschiedenen Kategorien nach einer Bewertung der Videos gefragt.
Die Auswertung zeigt, dass durch das optimierte Video mit einem kleinen Effekt bessere Ergebnisse erzielt wurden, diese aber nicht signifikant und auch nicht für alle Aufgaben besser sind. Die Schüler:innen bewerteten das nicht optimierte Video in allen Kategorien besser als das optimierte Video. Auch dieses Ergebnis ist nicht signifikant.}},
  author       = {{Hörnlein, Madeleine}},
  pages        = {{105}},
  title        = {{{Untersuchung von Erklärvideos im Physikunterricht - Wirksamkeit von Kohärenz}}},
  year         = {{2021}},
}

@inproceedings{45407,
  author       = {{Große-Heilmann, Rike Isabel and Burde, Jan-Philipp and Riese, Josef and Schubatzky, Thomas and Weiler, David}},
  booktitle    = {{PhyDid B-Didaktik der Physik-Beiträge zur DPG-Frühjahrstagung 2021}},
  pages        = {{171--178}},
  title        = {{{Erwerb und Messung physikdidaktischer Kompetenzen zum Einsatz digitaler Medien}}},
  year         = {{2021}},
}

@inproceedings{45408,
  author       = {{Weiler, David and Burde, Jan-Philipp and Große-Heilmann, Rike Isabel and Lachner, Andreas and Riese, Josef and Schubatzky, Thomas}},
  booktitle    = {{PhyDid B-Didaktik der Physik-Beiträge zur DPG-Frühjahrstagung 2021}},
  pages        = {{209--216}},
  title        = {{{Entwicklung eines Seminars zur Förderung des Konzeptverständnisses mittels digitaler Medien}}},
  year         = {{2021}},
}

@inproceedings{45449,
  author       = {{Mutschler, Tanja and Buschhüter, David and Schröder, Jan  and Riese, Josef and Borowski, Andreas}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch? Gesellschaft für Didaktik der Chemie und Physik. Online Jahrestagung 2020}},
  editor       = {{Habig, Sebastian}},
  pages        = {{258--261}},
  title        = {{{Theoriekonformität von Unterrichtsplanungen im Fach Physik  vor und nach dem Praxissemester}}},
  volume       = {{41}},
  year         = {{2021}},
}

@inproceedings{45461,
  author       = {{Große-Heilmann, Rike Isabel and Riese, Josef}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch? Gesellschaft für Didaktik der Chemie und Physik. Online Jahrestagung 2020. Essen: Universität Duisburg-Essen}},
  editor       = {{Habig, Sebastian}},
  pages        = {{441--444}},
  title        = {{{Erwerb physikdidaktischen Wissens zum Einsatz digitaler Medien im Physikunterricht}}},
  volume       = {{41}},
  year         = {{2021}},
}

@inproceedings{45460,
  author       = {{Joswig-Käfer, Ann-Kathrin and Riese, Josef}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch? Gesellschaft für Didaktik der Chemie und Physik. Online Jahrestagung 2020. Essen: Universität Duisburg-Essen}},
  editor       = {{Habig, Sebastian}},
  pages        = {{286--289}},
  title        = {{{Längsschnitt Physikdidaktischen Wissens: Ursachen für Veränderungen}}},
  volume       = {{41}},
  year         = {{2021}},
}

@inproceedings{45463,
  author       = {{Ermel, Dorothee and Riese, Josef}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch? Gesellschaft für Didaktik der Chemie und Physik. Online Jahrestagung 2020. Essen: Universität Duisburg-Essen}},
  editor       = {{Habig, Sebastian}},
  pages        = {{585--588}},
  title        = {{{Praktische technische Kompetenzen im Techniklehramt}}},
  volume       = {{41}},
  year         = {{2021}},
}

@inproceedings{45462,
  author       = {{Albert, Gerrit and Riese, Josef}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch? Gesellschaft für Didaktik der Chemie und Physik. Online Jahrestagung 2020. Essen: Universität Duisburg-Essen}},
  editor       = {{Habig, Sebastian}},
  pages        = {{581--584}},
  title        = {{{Digitale Kompetenzen im Techniklehramt}}},
  volume       = {{41}},
  year         = {{2021}},
}

@article{46135,
  author       = {{Schall, Johannes and Deconinck, Marielle and Bart, Nikolai and Florian, Matthias and Helversen, Martin and Dangel, Christian and Schmidt, Ronny and Bremer, Lucas and Bopp, Frederik and Hüllen, Isabell and Gies, Christopher and Reuter, Dirk and Wieck, Andreas D. and Rodt, Sven and Finley, Jonathan J. and Jahnke, Frank and Ludwig, Arne and Reitzenstein, Stephan}},
  issn         = {{2511-9044}},
  journal      = {{Advanced Quantum Technologies}},
  keywords     = {{Electrical and Electronic Engineering, Computational Theory and Mathematics, Condensed Matter Physics, Mathematical Physics, Nuclear and High Energy Physics, Electronic, Optical and Magnetic Materials, Statistical and Nonlinear Physics}},
  number       = {{6}},
  publisher    = {{Wiley}},
  title        = {{{Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography}}},
  doi          = {{10.1002/qute.202100002}},
  volume       = {{4}},
  year         = {{2021}},
}

@inproceedings{33545,
  author       = {{Elsner, Julia and Tenberge, Claudia and Fechner, Sabine}},
  booktitle    = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch?}},
  editor       = {{Habig, Sebastian}},
  pages        = {{609--612}},
  title        = {{{Unterstützung des Modellierungsprozesses durch Analogiebildung im Sachunterricht}}},
  volume       = {{41}},
  year         = {{2021}},
}

@article{26077,
  abstract     = {{<jats:p>Nonlinear SU(1,1) interferometers are fruitful and promising tools for spectral engineering and precise measurements with phase sensitivity below the classical bound. Such interferometers have been successfully realized in bulk and fiber-based configurations. However, rapidly developing integrated technologies provide higher efficiencies, smaller footprints, and pave the way to quantum-enhanced on-chip interferometry. In this work, we theoretically realised an integrated architecture of the multimode SU(1,1) interferometer which can be applied to various integrated platforms. The presented interferometer includes a polarization converter between two photon sources and utilizes a continuous-wave (CW) pump. Based on the potassium titanyl phosphate (KTP) platform, we show that this configuration results in almost perfect destructive interference at the output and supersensitivity regions below the classical limit. In addition, we discuss the fundamental difference between single-mode and highly multimode SU(1,1) interferometers in the properties of phase sensitivity and its limits. Finally, we explore how to improve the phase sensitivity by filtering the output radiation and using different seeding states in different modes with various detection strategies.</jats:p>}},
  author       = {{Ferreri, Alessandro and Santandrea, Matteo and Stefszky, Michael and Luo, Kai Hong and Herrmann, Harald and Silberhorn, Christine and Sharapova, Polina R.}},
  issn         = {{2521-327X}},
  journal      = {{Quantum}},
  title        = {{{Spectrally multimode integrated SU(1,1) interferometer}}},
  doi          = {{10.22331/q-2021-05-27-461}},
  year         = {{2021}},
}

@inproceedings{39027,
  abstract     = {{We experimentally investigate the generation of continuous-wave optical squeezing from a titanium-indiffused lithium niobate waveguide resonator at low and high frequencies. The device promises integration with different platform chips for more complex optical systems.}},
  author       = {{Domeneguetti, Renato R. and Conradi, Hauke and Kleinert, Moritz and Kießler, Christian and Stefszky, Michael and Herrmann, Harald and Silberhorn, Christine and Andersen, Ulrik L. and Neergaard-Nielsen, Jonas Schou and Gehring, Tobias}},
  booktitle    = {{2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference}},
  keywords     = {{Optical systems, Polymer waveguides, Quantum key distribution, Quantum light sources, Squeezed states, Waveguides}},
  pages        = {{eb_4_1}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Nonlinear waveguides for integrated quantum light source}}},
  year         = {{2021}},
}