@article{34091,
  author       = {{Kunnathully, Vinay S. and Riedl, Thomas and Trapp, Alexander and Langer, Timo and Reuter, Dirk and Lindner, Jörg}},
  issn         = {{0022-0248}},
  journal      = {{Journal of Crystal Growth}},
  keywords     = {{Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics}},
  publisher    = {{Elsevier BV}},
  title        = {{{InAs heteroepitaxy on nanopillar-patterned GaAs (111)A}}},
  doi          = {{10.1016/j.jcrysgro.2020.125597}},
  volume       = {{537}},
  year         = {{2020}},
}

@article{34090,
  author       = {{Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0038-1098}},
  journal      = {{Solid State Communications}},
  keywords     = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
  doi          = {{10.1016/j.ssc.2020.113927}},
  volume       = {{314-315}},
  year         = {{2020}},
}

@article{34089,
  author       = {{Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0038-1098}},
  journal      = {{Solid State Communications}},
  keywords     = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
  doi          = {{10.1016/j.ssc.2020.113927}},
  volume       = {{314-315}},
  year         = {{2020}},
}

@article{47958,
  abstract     = {{High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched second-harmonic generation using the fundamental, quasi-TE polarized waveguide modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled accurately over 5 mm. The high fidelity of the poling is demonstrated over long lengths using a non-destructive technique of confocal scanning second-harmonic microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W (length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40 °C without measurable loss of efficiency.}},
  author       = {{Zhao, Jie and Rüsing, Michael and Javid, Usman A. and Ling, Jingwei and Li, Mingxiao and Lin, Qiang and Mookherjea, Shayan}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  keywords     = {{Atomic and Molecular Physics, and Optics}},
  number       = {{13}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation}}},
  doi          = {{10.1364/oe.395545}},
  volume       = {{28}},
  year         = {{2020}},
}

@article{47955,
  abstract     = {{Quasi-phase-matched grating structures in lithium niobate waveguides with sub-micrometer periodicities will benefit the development of short-wavelength nonlinear optical devices. Here, we report on the reproducible formation of periodically poled domains in x-cut single-crystalline thin-film lithium niobate with periodicities as short as 600 nm. Shaped single-voltage poling pulses were applied to electrode structures that were fabricated by a combination of electron-beam and direct-writing laser lithography. Evidence of successful poling with good quality was obtained through second-harmonic microscopy and piezoresponse force microscopy imaging. For the sub-micrometer period structures, we observed patterns with a double periodicity formed by domain interactions and features with sizes <200 nm.}},
  author       = {{Zhao, Jie and Rüsing, Michael and Roeper, Matthias and Eng, Lukas M. and Mookherjea, Shayan}},
  issn         = {{0021-8979}},
  journal      = {{Journal of Applied Physics}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{19}},
  publisher    = {{AIP Publishing}},
  title        = {{{Poling thin-film x-cut lithium niobate for quasi-phase matching with sub-micrometer periodicity}}},
  doi          = {{10.1063/1.5143266}},
  volume       = {{127}},
  year         = {{2020}},
}

@article{47952,
  author       = {{Zhao, Jie and Ma, Chaoxuan and Rüsing, Michael and Mookherjea, Shayan}},
  issn         = {{0031-9007}},
  journal      = {{Physical Review Letters}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{16}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{High Quality Entangled Photon Pair Generation in Periodically Poled Thin-Film Lithium Niobate Waveguides}}},
  doi          = {{10.1103/physrevlett.124.163603}},
  volume       = {{124}},
  year         = {{2020}},
}

@inproceedings{48850,
  abstract     = {{Sequential model-based optimization (SMBO) approaches are algorithms for solving problems that require computationally or otherwise expensive function evaluations. The key design principle of SMBO is a substitution of the true objective function by a surrogate, which is used to propose the point(s) to be evaluated next. SMBO algorithms are intrinsically modular, leaving the user with many important design choices. Significant research efforts go into understanding which settings perform best for which type of problems. Most works, however, focus on the choice of the model, the acquisition function, and the strategy used to optimize the latter. The choice of the initial sampling strategy, however, receives much less attention. Not surprisingly, quite diverging recommendations can be found in the literature. We analyze in this work how the size and the distribution of the initial sample influences the overall quality of the efficient global optimization (EGO) algorithm, a well-known SMBO approach. While, overall, small initial budgets using Halton sampling seem preferable, we also observe that the performance landscape is rather unstructured. We furthermore identify several situations in which EGO performs unfavorably against random sampling. Both observations indicate that an adaptive SMBO design could be beneficial, making SMBO an interesting test-bed for automated algorithm design.}},
  author       = {{Bossek, Jakob and Doerr, Carola and Kerschke, Pascal}},
  booktitle    = {{Proceedings of the Genetic and Evolutionary Computation Conference}},
  isbn         = {{978-1-4503-7128-5}},
  keywords     = {{continuous black-box optimization, design of experiments, initial design, sequential model-based optimization}},
  pages        = {{778–786}},
  publisher    = {{Association for Computing Machinery}},
  title        = {{{Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB}}},
  doi          = {{10.1145/3377930.3390155}},
  year         = {{2020}},
}

@inproceedings{48897,
  abstract     = {{In this work we focus on the well-known Euclidean Traveling Salesperson Problem (TSP) and two highly competitive inexact heuristic TSP solvers, EAX and LKH, in the context of per-instance algorithm selection (AS). We evolve instances with nodes where the solvers show strongly different performance profiles. These instances serve as a basis for an exploratory study on the identification of well-discriminating problem characteristics (features). Our results in a nutshell: we show that even though (1) promising features exist, (2) these are in line with previous results from the literature, and (3) models trained with these features are more accurate than models adopting sophisticated feature selection methods, the advantage is not close to the virtual best solver in terms of penalized average runtime and so is the performance gain over the single best solver. However, we show that a feature-free deep neural network based approach solely based on visual representation of the instances already matches classical AS model results and thus shows huge potential for future studies.}},
  author       = {{Seiler, Moritz and Pohl, Janina and Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}},
  booktitle    = {{Parallel Problem Solving from {Nature} (PPSN XVI)}},
  isbn         = {{978-3-030-58111-4}},
  keywords     = {{Automated algorithm selection, Deep learning, Feature-based approaches, Traveling Salesperson Problem}},
  pages        = {{48–64}},
  publisher    = {{Springer-Verlag}},
  title        = {{{Deep Learning as a Competitive Feature-Free Approach for Automated Algorithm Selection on the Traveling Salesperson Problem}}},
  doi          = {{10.1007/978-3-030-58112-1_4}},
  year         = {{2020}},
}

@article{50175,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>Astrophysical topics can be treated with the methods of different areas of physics, mathematics and other natural sciences. The integration of these topics into such areas could improve students’ motivation and strengthen the connections between different fields of the mentioned sciences. In this article, an example of the connection between the physics of the stars and that of their statistical distributions is given. The usage of Microsoft Excel simplifies the mathematical requirements and gives the possibility of seeing the changes of distribution with the growing age of the regarded population of stars. The changes are a direct consequence to the limited lifetime of the stars and the limited age of the considered population of stars.</jats:p>}},
  author       = {{Hohmann, Sascha}},
  issn         = {{0143-0807}},
  journal      = {{European Journal of Physics}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{1}},
  publisher    = {{IOP Publishing}},
  title        = {{{Calculating the distributions of number, mass and luminosity of the stars with the help of MS Excel}}},
  doi          = {{10.1088/1361-6404/abb297}},
  volume       = {{42}},
  year         = {{2020}},
}

@article{53415,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Given a closed orientable hyperbolic manifold of dimension <jats:inline-formula><jats:alternatives><jats:tex-math>$$\ne 3$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
                  <mml:mrow>
                    <mml:mo>≠</mml:mo>
                    <mml:mn>3</mml:mn>
                  </mml:mrow>
                </mml:math></jats:alternatives></jats:inline-formula> we prove that the multiplicity of the Pollicott-Ruelle resonance of the geodesic flow on perpendicular one-forms at zero agrees with the first Betti number of the manifold. Additionally, we prove that this equality is stable under small perturbations of the Riemannian metric and simultaneous small perturbations of the geodesic vector field within the class of contact vector fields. For more general perturbations we get bounds on the multiplicity of the resonance zero on all one-forms in terms of the first and zeroth Betti numbers. Furthermore, we identify for hyperbolic manifolds further resonance spaces whose multiplicities are given by higher Betti numbers.
</jats:p>}},
  author       = {{Küster, Benjamin and Weich, Tobias}},
  issn         = {{0010-3616}},
  journal      = {{Communications in Mathematical Physics}},
  keywords     = {{Mathematical Physics, Statistical and Nonlinear Physics}},
  number       = {{2}},
  pages        = {{917--941}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Pollicott-Ruelle Resonant States and Betti Numbers}}},
  doi          = {{10.1007/s00220-020-03793-2}},
  volume       = {{378}},
  year         = {{2020}},
}

@article{35869,
  author       = {{Keum, Changmin and Becker, David and Archer, Emily and Bock, Harald and Kitzerow, Heinz-Siegfried and Gather, Malte C. and Murawski, Caroline}},
  issn         = {{2195-1071}},
  journal      = {{Advanced Optical Materials}},
  keywords     = {{Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
  number       = {{17}},
  publisher    = {{Wiley}},
  title        = {{{Organic Light‐Emitting Diodes Based on a Columnar Liquid‐Crystalline Perylene Emitter}}},
  doi          = {{10.1002/adom.202000414}},
  volume       = {{8}},
  year         = {{2020}},
}

@article{35859,
  author       = {{Risse, Anna Margareta and Schmidtke, Jürgen and Kitzerow, Heinz-Siegfried}},
  issn         = {{0267-8292}},
  journal      = {{Liquid Crystals}},
  keywords     = {{Condensed Matter Physics, General Materials Science, General Chemistry}},
  number       = {{7}},
  pages        = {{1025--1033}},
  publisher    = {{Informa UK Limited}},
  title        = {{{Dynamics of a liquid crystal-based modulator with germanium substrates for mid-infrared radiation}}},
  doi          = {{10.1080/02678292.2020.1839803}},
  volume       = {{48}},
  year         = {{2020}},
}

@article{40577,
  author       = {{Tian, Zhihong and Lopez Salas, Nieves and Liu, Chuntai and Liu, Tianxi and Antonietti, Markus}},
  issn         = {{2198-3844}},
  journal      = {{Advanced Science}},
  keywords     = {{General Physics and Astronomy, General Engineering, Biochemistry, Genetics and Molecular Biology (miscellaneous), General Materials Science, General Chemical Engineering, Medicine (miscellaneous)}},
  number       = {{24}},
  publisher    = {{Wiley}},
  title        = {{{C            <sub>2</sub>            N: A Class of Covalent Frameworks with Unique Properties}}},
  doi          = {{10.1002/advs.202001767}},
  volume       = {{7}},
  year         = {{2020}},
}

@article{41023,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Efficient oxygen evolution reaction (OER) electrocatalysts are pivotal for sustainable fuel production, where the Ni-Fe oxyhydroxide (OOH) is among the most active catalysts for alkaline OER. Electrolyte alkali metal cations have been shown to modify the activity and reaction intermediates, however, the exact mechanism is at question due to unexplained deviations from the cation size trend. Our X-ray absorption spectroelectrochemical results show that bigger cations shift the Ni<jats:sup>2+/(3+δ)+</jats:sup> redox peak and OER activity to lower potentials (however, with typical discrepancies), following the order CsOH &gt; NaOH ≈ KOH &gt; RbOH &gt; LiOH. Here, we find that the OER activity follows the variations in electrolyte pH rather than a specific cation, which accounts for differences both in basicity of the alkali hydroxides and other contributing anomalies. Our density functional theory-derived reactivity descriptors confirm that cations impose negligible effect on the Lewis acidity of Ni, Fe, and O lattice sites, thus strengthening the conclusions of an indirect pH effect.</jats:p>}},
  author       = {{Görlin, Mikaela and Halldin Stenlid, Joakim and Koroidov, Sergey and Wang, Hsin-Yi and Börner, Mia and Shipilin, Mikhail and Kalinko, Aleksandr and Murzin, Vadim and Safonova, Olga V. and Nachtegaal, Maarten and Uheida, Abdusalam and Dutta, Joydeep and Bauer, Matthias and Nilsson, Anders and Diaz-Morales, Oscar}},
  issn         = {{2041-1723}},
  journal      = {{Nature Communications}},
  keywords     = {{General Physics and Astronomy, General Biochemistry, Genetics and Molecular Biology, General Chemistry, Multidisciplinary}},
  number       = {{1}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Key activity descriptors of nickel-iron oxygen evolution electrocatalysts in the presence of alkali metal cations}}},
  doi          = {{10.1038/s41467-020-19729-2}},
  volume       = {{11}},
  year         = {{2020}},
}

@article{41024,
  author       = {{Gujt, Jure and Zimmer, Peter and Zysk, Frederik and Süß, Vicky and Felser, Claudia and Bauer, Matthias and Kühne, Thomas}},
  issn         = {{2329-7778}},
  journal      = {{Structural Dynamics}},
  keywords     = {{Spectroscopy, Condensed Matter Physics, Instrumentation, Radiation}},
  number       = {{3}},
  publisher    = {{AIP Publishing}},
  title        = {{{Water structure near the surface of Weyl semimetals as catalysts in photocatalytic proton reduction}}},
  doi          = {{10.1063/4.0000008}},
  volume       = {{7}},
  year         = {{2020}},
}

@article{40217,
  author       = {{Wagenknecht, Inga and Meier-Gräwe, Uta}},
  issn         = {{2196-8225}},
  journal      = {{Praxis der Kinderpsychologie und Kinderpsychiatrie}},
  keywords     = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}},
  number       = {{7}},
  pages        = {{643--665}},
  publisher    = {{Vandenhoeck & Ruprecht GmbH & Co, KG}},
  title        = {{{Psychische Auffälligkeiten bei Kindern und Jugendlichen, für die das Jugendamt in Anspruch genommen wurde}}},
  doi          = {{10.13109/prkk.2020.69.7.643}},
  volume       = {{69}},
  year         = {{2020}},
}

@article{40271,
  author       = {{Vergyris, Panagiotis and Babin, Charles and Nold, Raphael and Gouzien, Elie and Herrmann, Harald and Silberhorn, Christine and Alibart, Olivier and Tanzilli, Sébastien and Kaiser, Florian}},
  issn         = {{0003-6951}},
  journal      = {{Applied Physics Letters}},
  keywords     = {{Physics and Astronomy (miscellaneous)}},
  number       = {{2}},
  publisher    = {{AIP Publishing}},
  title        = {{{Two-photon phase-sensing with single-photon detection}}},
  doi          = {{10.1063/5.0009527}},
  volume       = {{117}},
  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{37932,
  abstract     = {{<jats:p>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.</jats:p>}},
  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{41028,
  author       = {{Naumova, Maria A. and Kalinko, Aleksandr and Wong, Joanne W. L. and Alvarez Gutierrez, Sol and Meng, Jie and Liang, Mingli and Abdellah, Mohamed and Geng, Huifang and Lin, Weihua and Kubicek, Katharina and Biednov, Mykola and Lima, Frederico and Galler, Andreas and Zalden, Peter and Checchia, Stefano and Mante, Pierre-Adrien and Zimara, Jennifer and Schwarzer, Dirk and Demeshko, Serhiy and Murzin, Vadim and Gosztola, David and Jarenmark, Martin and Zhang, Jianxin and Bauer, Matthias and Lawson Daku, Max Latevi and Khakhulin, Dmitry and Gawelda, Wojciech and Bressler, Christian and Meyer, Franc and Zheng, Kaibo and Canton, Sophie E.}},
  issn         = {{0021-9606}},
  journal      = {{The Journal of Chemical Physics}},
  keywords     = {{Physical and Theoretical Chemistry, General Physics and Astronomy}},
  number       = {{21}},
  publisher    = {{AIP Publishing}},
  title        = {{{Exploring the light-induced dynamics in solvated metallogrid complexes with femtosecond pulses across the electromagnetic spectrum}}},
  doi          = {{10.1063/1.5138641}},
  volume       = {{152}},
  year         = {{2020}},
}