@book{35966, author = {{Sloane, Peter F. E. and Daniel, Desiree and Meier, Karin and Schwabl, Franziska and Volgmann, Simone}}, publisher = {{Eusl-Verlagsgesellschaft mbH}}, title = {{{Selbstreguliertes Lernen - Können die das überhaupt? Gestaltung von Lernprozessen in berufsvorbereitenden Bildungsgängen.}}}, year = {{2020}}, } @inproceedings{24247, author = {{Moritzer, Elmar and Hillemeyer, Johannes}}, booktitle = {{73rd Annual Assembly of International Institute of Welding (IIW) and International Conference}}, title = {{{Material Specific Predicting of the Optimal Joining Parameters for the Screw Blind Rivet Joining Process}}}, year = {{2020}}, } @inproceedings{27417, author = {{Chalicheemalapalli Jayasankar, Deviprasad and Stallmeister, Tim and Wang, Zheng and Tröster, Thomas}}, booktitle = {{Hybrid 2020 Materials and Structures}}, editor = {{Hausmann, Joachim M and Siebert, Marc and von Hehl, Axel and Weidenmann, Kay André}}, location = {{Digital}}, pages = {{167--172}}, title = {{{MANUFACTURING OF HYBRID COMPONENTS BY VARTM-PROCESS USING NEW SEALING TECHNIQUE DEVELOPED}}}, year = {{2020}}, } @phdthesis{37585, abstract = {{Die additive Fertigung gewinnt zunehmend Bedeutung für die Herstellung finaler Bauteile. Ein Anwendungsgebiet liegt dabei in der Herstellung dentaler Restaurationen, bei denen die Metallgerüste für Kronen und Brücken mittels Laser-Strahlschmelzen hergestellt werden. Aufgrund des schichtweisen Aufbaus und der direkten digitalen Fertigung eignet sich die additive Fertigung in besonderem Maße für die Herstellung dieser Bauteile mit individueller Geometrie. Allerdings fehlt der Nachweis, dass die geforderte Teilequalität reproduzierbar erreicht wird. Im Rahmen der vorliegenden Arbeit wird ein Konzept zur Qualitätssicherung erarbeitet, das ein standardisiertes Prüfverfahren zum Nachweis der Maschinenqualifikation für den beschriebenen Anwendungsfall beinhaltet. Dazu werden Qualitätsanforderungen ermittelt und mit dem Stand der Technik abgeglichen. Basierend darauf erfolgen Untersuchungen zur Korrelation zwischen mechanischen und physikalischen Materialkennwerten, wofür durch Variation der Fertigungsparameter gezielt Bauteile mit unterschiedlicher Porosität erzeugt werden. In der Folge wird die Porosität als Prüfgröße festgelegt. Ausgehend von den definierten Qualitätsanforderungen und den Versuchsergebnissen wird ein Verfahren zum Nachweis der Maschinenqualifikation basierend auf der Berechnung des potenziellen Maschinenleistungsindexes erarbeitet und exemplarisch für das verwendete Fertigungssystem angewendet. Abschließend werden Ansätze zur Weiterentwicklung des Verfahrens sowie für weiterführende Forschungsthemen dargestellt.}}, author = {{Huxol, Andrea}}, isbn = {{978-3-8440-7358-4}}, keywords = {{Laser-Strahlschmelzen, Prozessfähigkeit}}, pages = {{232}}, publisher = {{Shaker Verlag}}, title = {{{Beitrag zur Qualitätssicherung in der additiven Fertigung individueller Produkte aus CoCr-Legierungen}}}, volume = {{2020,42}}, year = {{2020}}, } @article{17322, author = {{Mukherjee, Amlan and Widhalm, Alex and Siebert, Dustin and Krehs, Sebastian and Sharma, Nandlal and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, keywords = {{tet_topic_qd}}, pages = {{251103}}, title = {{{Electrically controlled rapid adiabatic passage in a single quantum dot}}}, doi = {{10.1063/5.0012257}}, volume = {{116}}, year = {{2020}}, } @article{24374, author = {{Caylak, Ismail and Penner, Eduard and Mahnken, Rolf}}, issn = {{0045-7825}}, journal = {{Computer Methods in Applied Mechanics and Engineering}}, title = {{{Mean-field and full-field homogenization with polymorphic uncertain geometry and material parameters}}}, doi = {{10.1016/j.cma.2020.113439}}, year = {{2020}}, } @article{39825, author = {{Plöger, Wilfried and Krepf, Matthias and Scholl, Daniel and Seifert, Andreas}}, journal = {{Teacher Education Quaterly}}, number = {{2}}, pages = {{134--157}}, title = {{{Analytical Competence of Teachers – Assessing the Construct Validity by Means of Mixed Methods and Drawing Consequences for Teacher Education.}}}, volume = {{47}}, year = {{2020}}, } @inproceedings{24023, abstract = {{This paper presents an ultra-wideband and ultra-low noise frequency synthesizer using a mode-locked laser as its reference. The frequency synthesizer can lock in the frequency range from 2 GHz to 20 GHz on any harmonic of a mode-locked laser optical pulse train. The integrated rms-jitter (1 kHz-100 MHz) of the synthesizer is less than 5 fs in the frequency range from 4 GHz to 20 GHz with a typical value of 4 fs and a minimum of 3 fs. This is the first reported wideband phase locked loop achieving sub-10 fs rms-jitter for offset frequencies larger than 1 kHz.}}, author = {{Bahmanian, Meysam and Fard, Saeed and Koppelmann, Bastian and Scheytt, Christoph}}, booktitle = {{ 2020 IEEE/MTT-S International Microwave Symposium (IMS)}}, publisher = {{IEEE}}, title = {{{Wide-Band Frequency Synthesizer with Ultra-Low Phase Noise Using an Optical Clock Source}}}, doi = {{10.1109/IMS30576.2020.9224118}}, year = {{2020}}, } @article{39836, author = {{Vogt, Annika and Stiel, Stephanie and Heckel, Maria and Goebel, Swantje and Mai, Sandra Stephanie and Seifert, Andreas and Gerlach, Christina and Ostgathe, Christoph and Weber, Martin }}, journal = {{Health and Quality of Life Outcomes}}, number = {{311}}, pages = {{2--15}}, title = {{{Assessment of the quality of end-of-life care: translation and validation of the German version of the “Care of the Dying Evaluation” (CODE-GER) – a questionnaire for bereaved relatives.}}}, volume = {{18}}, year = {{2020}}, } @inproceedings{40310, author = {{Decius, Julian and Schaper, Niclas and Seifert, Andreas}}, booktitle = {{9th PDRnet Research Symposium}}, location = {{Antwerpen}}, title = {{{Investigating the Hen-Egg-Problem: A Cross-Lagged-Panel Approach to Informal Workplace Learning and Working Conditions.}}}, year = {{2020}}, } @article{37934, author = {{Mukamel, Shaul and Freyberger, Matthias and Schleich, Wolfgang and Bellini, Marco and Zavatta, Alessandro and Leuchs, Gerd and Silberhorn, Christine and Boyd, Robert W and Sánchez-Soto, Luis Lorenzo and Stefanov, André and Barbieri, Marco and Paterova, Anna and Krivitsky, Leonid and Shwartz, Sharon and Tamasaku, Kenji and Dorfman, Konstantin and Schlawin, Frank and Sandoghdar, Vahid and Raymer, Michael and Marcus, Andrew and Varnavski, Oleg and Goodson, Theodore and Zhou, Zhi-Yuan and Shi, Bao-Sen and Asban, Shahaf and Scully, Marlan and Agarwal, Girish and Peng, Tao and Sokolov, Alexei V and Zhang, Zhe-Dong and Zubairy, M Suhail and Vartanyants, Ivan A and del Valle, Elena and Laussy, Fabrice}}, issn = {{0953-4075}}, journal = {{Journal of Physics B: Atomic, Molecular and Optical Physics}}, keywords = {{Condensed Matter Physics, Atomic and Molecular Physics, and Optics}}, number = {{7}}, publisher = {{IOP Publishing}}, title = {{{Roadmap on quantum light spectroscopy}}}, doi = {{10.1088/1361-6455/ab69a8}}, volume = {{53}}, year = {{2020}}, } @article{37935, author = {{Meyer-Scott, Evan and Silberhorn, Christine and Migdall, Alan}}, issn = {{0034-6748}}, journal = {{Review of Scientific Instruments}}, keywords = {{Instrumentation}}, number = {{4}}, publisher = {{AIP Publishing}}, title = {{{Single-photon sources: Approaching the ideal through multiplexing}}}, doi = {{10.1063/5.0003320}}, volume = {{91}}, year = {{2020}}, } @article{37932, abstract = {{Hybrid quantum information processing combines the advantages of discrete and continues variable protocols by realizing protocols consisting of photon counting and homodyne measurements. However, the mode structure of pulsed sources and the properties of the detection schemes often require the use of optical filters in order to combine both detection methods in a common experiment. This limits the efficiency and the overall achievable squeezing of the experiment. In our work, we use photon subtraction to implement the distillation of pulsed squeezed states originating from a genuinely spatially and temporally single-mode parametric down-conversion source in non-linear waveguides. Due to the distillation, we witness an improvement of 0.17 dB from an initial squeezing value of −1.648 ± 0.002 dB, while achieving a purity of 0.58, and confirm the non-Gaussianity of the distilled state via the higher-order cumulants. With this, we demonstrate the source’s suitability for scalable hybrid quantum network applications with pulsed quantum light.}}, author = {{Dirmeier, Thomas and Tiedau, Johannes and Khan, Imran and Ansari, Vahid and Müller, Christian R. and Silberhorn, Christine and Marquardt, Christoph and Leuchs, Gerd}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{21}}, publisher = {{Optica Publishing Group}}, title = {{{Distillation of squeezing using an engineered pulsed parametric down-conversion source}}}, doi = {{10.1364/oe.402178}}, volume = {{28}}, year = {{2020}}, } @article{21025, author = {{Eigner, Christof and Padberg, Laura and Santandrea, Matteo and Herrmann, Harald and Brecht, Benjamin and Silberhorn, Christine}}, issn = {{1094-4087}}, journal = {{Optics Express}}, number = {{22}}, title = {{{Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides}}}, doi = {{10.1364/oe.399483}}, volume = {{28}}, year = {{2020}}, } @inproceedings{41894, author = {{Schöll, E and Schweickert, L and Hanschke, L and Zeuner, K.D and Sbresny, F and Lettner, T and Trivedi, R and Reindl, M and Covre da Silva, S.F and Trotta, R and Finley, J.J and Vučković, J and Müller, K and Rastelli, A and Zwiller, V and Jöns, Klaus D.}}, pages = {{ 233605 }}, title = {{{Crux of Using the Cascaded Emission of a Three-Level Quantum Ladder System to Generate Indistinguishable Photons}}}, volume = {{125}}, year = {{2020}}, } @inproceedings{41896, author = {{Barthelmi, K and Klein, J and Hötger, A and Sigl, L and Sigger, F and Mitterreiter, E and Rey, S and Gyger, S and Lorke, M and Florian, M and Jahnke, F and Taniguchi, T and Watanabe, K and Zwiller, V and Jöns, Klaus D. and Wurstbauer, U and Kastl, C and Weber-Bargioni, A and Finley, J.J and Müller, K and Holleitner, A.W}}, pages = {{070501 }}, title = {{{Atomistic defects as single-photon emitters in atomically thin MoS2}}}, volume = {{117}}, year = {{2020}}, } @inproceedings{41895, author = {{Hanschke, L and Schweickert, L and Camilo López Carreño, J and Schöll, E and Zeuner, K.D and Lettner, T and Zubizarreta Casalengua, E and Reindl, M and Covre da Silva, S.F and Trotta, R and Finley, J.J and Rastelli, A and Del Valle, E and Laussy, F.P and Zwiller, V and Müller, K and Jöns, Klaus D.}}, title = {{{Origin of Antibunching in Resonance Fluorescence}}}, volume = {{125}}, year = {{2020}}, } @inproceedings{41897, author = {{Steinhauer, S and Yang, , L and Gyger, S and Lettner, T and Errando-Herranz, C and Jöns, Klaus D and Baghban, M.A and Gallo, K and Zichi, J and Zwiller, V}}, title = {{{NbTiN thin films for superconducting photon detectors on photonic and two-dimensional materials}}}, volume = {{116}}, year = {{2020}}, } @inproceedings{41898, author = {{Lettner, T and Zeuner, K.D and Schöll, E and Huang, H and Scharmer, S and Covre da Silva, S.F and Gyger, S and Schweickert, L.K and Rastelli, A and Jöns, Klaus D. and Zwiller, V}}, number = {{1}}, pages = {{29--35}}, title = {{{A GaAs quantum dot in a parabolic microcavity tuned to 87Rb D1}}}, volume = {{7}}, year = {{2020}}, } @phdthesis{28368, author = {{Lochbichler, Matthias}}, isbn = {{978-3-947647-13-2}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}}, title = {{{Systematische Wahl einer Modellierungstiefe im Entwurfsprozess mechatronischer Systeme}}}, volume = {{394}}, year = {{2020}}, }