Ren, J, Q Liao, H Huang, Y Li, T Gao, Xuekai Ma, Stefan Schumacher, J Yao, S Bai, and H Fu. “Efficient Bosonic Condensation of Exciton Polaritons in an H-Aggregate Organic Single-Crystal Microcavity.”https://doi.org/10.1021/acs.nanolett.0c03009__Nano Letters 20, no. 10 (2020): 7550–57.https://doi.org/10.1021/acs.nanolett.0c03009 .

Berger, Bernd, Daniel Schmidt, Xuekai Ma, Stefan Schumacher, Christian Schneider, Sven Höfling, and Marc Assmann. “Formation Dynamics of Exciton-Polariton Vortices Created by Nonresonant Annular Pumping.”https://doi.org/10.1103/PhysRevB.101.245309__Physical Review B 101, no. 24 (2020): 245309.https://doi.org/10.1103/PhysRevB.101.245309 .

Ma, Xuekai, YV Kartashov, A Ferrando, and Stefan Schumacher. “Topological Edge States of Nonequilibrium Polaritons in Hollow Honeycomb Arrays.”https://doi.org/10.1364/ol.405844__Optics Letters 45, no. 19 (2020): 5311–14.https://doi.org/10.1364/ol.405844 .

Pukrop, Matthias, Stefan Schumacher, and Xuekai Ma. “Circular Polarization Reversal of Half-Vortex Cores in Polariton Condensates.”https://doi.org/10.1103/PhysRevB.101.205301__Physical Review B 101, no. 20 (2020): 205301.https://doi.org/10.1103/PhysRevB.101.205301 .

Ma, Xuekai, Yaroslav V. Kartashov, Tingge Gao, Lluis Torner, and Stefan Schumacher. “Spiraling Vortices in Exciton-Polariton Condensates.”https://doi.org/10.1103/PhysRevB.102.045309__Physical Review B 102, no. 4 (2020): 045309.https://doi.org/10.1103/PhysRevB.102.045309 .

Barkhausen, F, Stefan Schumacher, and Xuekai Ma. “Multistable Circular Currents of Polariton Condensates Trapped in Ring Potentials.”https://doi.org/10.1364/ol.386250__Optics Letters 45, no. 5 (2020): 1192–95.https://doi.org/10.1364/ol.386250 .

Schmidt, Falko, Agnieszka L. Kozub, Timur Biktagirov, Christof Eigner, Christine Silberhorn, Arno Schindlmayr, Wolf Gero Schmidt, and Uwe Gerstmann. “Free and Defect-Bound (Bi)Polarons in LiNbO3: Atomic Structure and Spectroscopic Signatures from Ab Initio Calculations.”https://doi.org/10.1103/PhysRevResearch.2.043002__Physical Review Research 2, no. 4 (2020).https://doi.org/10.1103/PhysRevResearch.2.043002 .

Braun, Christian, Sergej Neufeld, Uwe Gerstmann, S. Sanna, J. Plaickner, E. Speiser, N. Esser, and Wolf Gero Schmidt. “Vibration-Driven Self-Doping of Dangling-Bond Wires on Si(553)-Au Surfaces.”https://doi.org/10.1103/physrevlett.124.146802__Physical Review Letters 124, no. 14 (2020).https://doi.org/10.1103/physrevlett.124.146802 .

Ma, Xuekai, YV Kartashov, A Kavokin, and Stefan Schumacher. “Chiral Condensates in a Polariton Hexagonal Ring.”https://doi.org/10.1364/ol.405400__Optics Letters 45, no. 20 (2020): 5700–5703.https://doi.org/10.1364/ol.405400 .

Bardeleben, H. J. von, E. Rauls, and Uwe Gerstmann. “Carbon Vacancy-Related Centers in &;mml:Math Xmlns:Mml="http://Www..Org/1998/Math/MathML"&;&;mml:Mn&;3&;/Mml:Mn&;&;mml:Mi&;C&;/Mml:Mi&;&;/Mml:Math&;-Silicon Carbide: Negative-&;mml:Math Xmlns:Mml="http://Www..Org/1998/Math/MathML"&;&;mml:Mi&;U&;/Mml:Mi&;&;/Mml:Math&; Properties and Structural Transformation.”https://doi.org/10.1103/physrevb.101.184108__Physical Review B 101, no. 18 (2020).https://doi.org/10.1103/physrevb.101.184108 .

Hannes, Wolf-Rüdiger, and Torsten Meier. “K.p-Based Multiband Simulations of Non-Degenerate Two-Photon Absorption in Bulk GaAs.”https://doi.org/10.1117/12.2545924__In Ultrafast Phenomena and Nanophotonics XXIV, edited by Markus Betz and Abdulhakem Y. Elezzabi, 11278:112780S. SPIE Proceedings, 2020.https://doi.org/10.1117/12.2545924 .

Hannes, W.-R., Alexander Trautmann, M. Stein, F. Schäfer, M. Koch, and Torsten Meier. “Strongly Nonresonant Four-Wave Mixing in Semiconductors.”https://doi.org/10.1103/PhysRevB.101.075203__Physical Review B 101, no. 7 (2020): 075203.https://doi.org/10.1103/PhysRevB.101.075203 .

Song, Xiaohong, Shidong Yang, Ruixin Zuo, Torsten Meier, and Weifeng Yang. “Enhanced High-Order Harmonic Generation in Semiconductors by Excitation with Multicolor Pulses.”https://doi.org/10.1103/physreva.101.033410__Physical Review A 101 (2020).https://doi.org/10.1103/physreva.101.033410 .

Bocchini, Adriana, Christof Eigner, Christine Silberhorn, Wolf Gero Schmidt, and Uwe Gerstmann. “Understanding Gray Track Formation in KTP: Ti^3+ Centers Studied from First Principles.”https://doi.org/10.1103/PhysRevMaterials.4.124402__Phys. Rev. Materials 4 (2020): 124402.https://doi.org/10.1103/PhysRevMaterials.4.124402 .

Ma, Xuekai, B Berger, M Aßmann, R Driben, Torsten Meier, C Schneider, S Höfling, and Stefan Schumacher. “Realization of All-Optical Vortex Switching in Exciton-Polariton Condensates.”https://doi.org/10.1038/s41467-020-14702-5__Nature Communications 11, no. 1 (2020): 897.https://doi.org/10.1038/s41467-020-14702-5 .

Baron, Elias, Rüdiger Goldhahn, Michael Deppe, Donat Josef As, and Martin Feneberg. “Influence of the Free-Electron Concentration on the Optical Properties of Zincblende GaN up to 1×1020cm3.”https://doi.org/10.1103/physrevmaterials.3.104603__Physical Review Materials, 2019.https://doi.org/10.1103/physrevmaterials.3.104603 .

Deppe, M., J. W. Gerlach, S. Shvarkov, D. Rogalla, H.-W. Becker, Dirk Reuter, and Donat Josef As. “Germanium Doping of Cubic GaN Grown by Molecular Beam Epitaxy.”https://doi.org/10.1063/1.5066095__Journal of Applied Physics, 2019.https://doi.org/10.1063/1.5066095 .

Sain, Basudeb, Cedrik Meier, and Thomas Zentgraf. “Nonlinear Optics in All-Dielectric Nanoantennas and Metasurfaces: A Review.”https://doi.org/10.1117/1.ap.1.2.024002__Advanced Photonics 1, no. 2 (2019): 024002.https://doi.org/10.1117/1.ap.1.2.024002 .

Frese, Daniel, Qunshuo Wei, Yongtian Wang, Lingling Huang, and Thomas Zentgraf. “Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces.”https://doi.org/10.1021/acs.nanolett.9b01298__Nano Letters 19, no. 6 (2019): 3976–80.https://doi.org/10.1021/acs.nanolett.9b01298 .

Hammer, Manfred, Lena Ebers, and Jens Förstner. “Oblique Quasi-Lossless Excitation of a Thin Silicon Slab Waveguide: A Guided-Wave Variant of an Anti-Reflection Coating.”https://doi.org/10.1364/josab.36.002395__Journal of the Optical Society of America B 36 (2019): 2395.https://doi.org/10.1364/josab.36.002395 .