Publications

2022

(18 Publications)

Germanium monosulfide as a natural platform for highly anisotropic THz polaritons

T. Nörenberg, G. Álvarez-Pérez, M. Obst, L. Wehmeier, F. Hempel, J. M. Klopf, A. Y. Nikitin, S. C. Kehr*, L. M. Eng, P. Alonso-González*, and T. V. A. G. de Oliveira*

Observation of room temperature excitons in an atomically thin topological insulator

M. Syperek, R. Stühler, A. Consiglio, P. Holewa, P. Wyborski, L. Dusanowski, F. Reis, S. Höfling, R. Thomale, W. Hanke, R. Claessen, D. Di Sante, and C. Schneider

Exact Gravity Duals for Simple Quantum Circuits

J. Erdmenger, M. Flory, M. Gerbershagen, M. P. Heller, and A. Weigel

Collective coupling of 3D confined optical modes in monolithic twin microtube cavities formed by nanomembrane origami

X. Wang, Z. Wang, H. Dong, C. N. Saggau, H. Tang, M. Tang, L. Liu, S. Baunack, L. Bai, J. Liu, Y. Yin, L. Ma, and O. G. Schmidt

Plasmonic nanoparticles embedded in nanomembrane microcavity for flexible optical tuning

C. Pang, R. Li, H. Dong, C. N. Saggau, F. L. Kern, P. Potapov, J. Schultz, A. Lubk, R. Hübner, U. Kentsch, S. Zhou, M. Helm, F. Chen, L. Ma, and O. G. Schmidt

Terahertz-slicing — an all-optical synchronization for 4th generation light sources

M. Chen, T. V. A. G. de Oliveira, I. Ilyakov, T. Nörenberg, F. Kuschewski, J. Deinert, N. Awari, A. Ponomaryov, M. Kuntzsch, S. C. Kehr, L. M. Eng, M. Gensch, and S. Kovalev

Coaxial micro ring arrays fabricated on self-assembled microtube cavities for resonant light modulation

C. N. Saggau, S. Valligatla, X. Wang, H. Dong, L. Ma, and O. G. Schmidt

The Landé factors of electrons and holes in lead halide perovskites: universal dependence on the band gap

E. Kirstein, D. R. Yakovlev, M. M. Glazov, E. A. Zhukov, D. Kudlacik, I. V. Kalitukha, V. F. Sapega, G. S. Dimitriev, M. A. Semina, M. O. Nestoklon, E. L. Ivchenko, N. E. Kopteva, D. N. Dirin, O. Nazarenko, M. V. Kovalenko, A. Baumann, J. Höcker, V. Dyakonov, and M. Bayer

Charged moments in W3 higher spin holography

S. Zhao, C. Northe, K. Weisenberger, and R. Meyer

Polariton condensates for classical and quantum computing

A. Kavokin, T. C. H. Liew, C. Schneider, P. G. Lagoudakis, S. Klembt, and S. Hoefling

Geometric phases distinguish entangled states in wormhole quantum mechanics

F. S. Nogueira, S. Banerjee, M. Dorband, R. Meyer, J. van den Brink, and J. Erdmenger

Spin dynamics of electrons and holes interacting with nuclei in MAPbI3 Perovskite single crystals

E. Kirstein, D. Yakovlev, E. Zhukov, J. Höcker, V. Dyakonov, and M. Bayer

Electron–nuclear coherent coupling and nuclear spin readout through optically polarized VB– spin states in hBN

F. Murzakhanov, G. Mamin, S. Orlinskii, U. Gerstmann, W. Schmidt, T. Biktagirov, I. Aharonovich, A. Gottscholl, A. Sperlich, V. Dyakonov, and V. Soltamov

Time-reversal symmetry-breaking charge order in a kagome superconductor

C. Mielke, D. Das, J. Yin, H. Liu, R. Gupta, Y. Jiang, M. Medarde, X. Wu, H. Lei, J. Chang, P. Dai, Q. Si, H. Miao, R. Thomale, T. Neupert, Y. Shi, R. Khasanov, M. Hasan, H. Luetkens, and Z. Gugushia

Photon echo polarimetry of excitons and biexcitons in a ${\mathrm{CH}}_{3}{\mathrm{NH}}_{3}{\mathrm{PbI}}_{3}$ perovskite single crystal

A. V. Trifonov, S. Grisard, A. N. Kosarev, I. A. Akimov, D. R. Yakovlev, J. Höcker, V. Dyakonov, and M. Bayer

Towards quantifying information flows: relative entropy in deep neural networks and the renormalization group

J. Erdmenger, K. Grosvenor, and R. Jefferson

Interfacial chemistry triggers ultrafast radiative recombination in metal halide perovskites

H. Dong, C. Zhang, W. Nie, S. Duan, C. N. Saggau, M. Tang, M. Zhu, Y. S. Zhao, L. Ma, and O. G. Schmidt

Electro-optical switching of a topological polariton laser

P. Gagel, T. H. Harder, S. Betzold, O. A. Egorov, J. Beierlein, H. Suchomel, M. Emmerling, A. Wolf, U. Peschel, S. Höfling, C. Schneider, and S. Klembt

2021

(19 Publications)

Symmetry-resolved entanglement for excited states and two entangling intervals in AdS3/CFT2

K. Weisenberger, S. Zhao, C. Northe, and R. Meyer

Long-lived spin-polarized intermolecular exciplex states in thermally activated delayed fluorescence-based organic light-emitting diodes

S. Weissenseel, A. Gottscholl, R. Bönnighausen, V. Dyakonov, and A. Sperlich

Quasi-1D exciton channels in strain-engineered 2D materials

F. Dirnberger, J. D. Ziegler, P. E. F. Junior, R. Bushati, T. Taniguchi, K. Watanabe, J. Fabian, D. Bougeard, A. Chernikov, and V. M. Menon

Far-infrared near-field optical imaging and kelvin probe force microscopy of laser-crystallized and -amorphized phase change material Ge3Sb2Te6

J. Barnett*, L. Wehmeier, A. Heßler, M. Lewin, J. Pries, M. Wuttig, J. M. Klopf, S. C. Kehr, L. M. Eng, and T. Taubner

Kagome Flatbands for Coherent Exciton-Polariton Lasing

T. H. Harder, O. A. Egorov, C. Krause, J. Beierlein, P. Gagel, M. Emmerling, C. Schneider, U. Peschel, S. Höfling, and S. Klembt

Control of Emission Characteristics of Perovskite Lasers through Optical Feedback

A. Palatnik, C. Cho, C. Zhan, M. Sudzius, M. Kroll, S. Meister, and K. Leo

Topological insulator vertical-cavity laser array

A. Dikopoltsev, T. H. Harder, E. Lustig, O. A. Egorov, J. Beierlein, A. Wolf, Y. Lumer, M. Emmerling, C. Schneider, S. Höfling, M. Segev, and S. Klembt

Light detection nears its quantum limit

S. Klembt

Perovskite origami for programmable microtube lasing

H. Dong, C. N. Saggau, M. Zhu, J. Liang, S. Duan, X. Wang, H. Tang, Y. Yin, X. Wang, J. Wang, C. Zhang, Y. S. Zhao, L. Ma, and O. G. Schmidt

Effects of the Linear Polarization of Polariton Condensates in Their Propagation in Codirectional Couplers

E. Rozas, A. Yulin, J. Beierlein, S. Klembt, S. Höfling, O. Egorov, U. Peschel, I. A. Shelykh, M. Gundin, I. Robles-López, M. D. Martín, and L. Viña

Room-Temperature Topological Polariton Laser in an Organic Lattice

M. Dusel, S. Betzold, T. H. Harder, M. Emmerling, J. Beierlein, J. Ohmer, U. Fischer, R. Thomale, C. Schneider, S. Höfling, and S. Klembt

One-dimensional planar topological laser

A. Palatnik, M. Sudzius, S. Meister, and K. Leo

Probing subwavelength in-plane anisotropy with antenna-assisted infrared nano-spectroscopy

Z. Yao, X. Chen, L. Wehmeier, S. Xu, Y. Shao, Z. Zeng, F. Liu, A. S. Mcleod, S. N. Gilbert Corder, M. Tsuneto, W. Shi, Z. Wang, W. Zheng, H. A. Bechtel, G. L. Carr, M. C. Martin, A. Zettl, D. N. Basov, X. Chen, L. M. Eng, S. C. Kehr, and M. Liu

Nonperturbative topological current in Weyl and Dirac semimetals in laser fields

R. M. A. Dantas, Z. Wang, P. Surówka, and T. Oka

Coherent Topological Polariton Laser

T. H. Harder, M. Sun, O. A. Egorov, I. Vakulchyk, J. Beierlein, P. Gagel, M. Emmerling, C. Schneider, U. Peschel, I. G. Savenko, S. Klembt, and S. Höfling

Recent Progress on Optoplasmonic Whispering-Gallery-Mode Microcavities

Y. Chen, Y. Yin, L. Ma, and O. G. Schmidt

Sub-diffractional cavity modes of terahertz hyperbolic phonon polaritons in tin oxide

F. H. Feres, R. A. Mayer, L. Wehmeier, F. C. B. Maia, E. R. Viana, A. Malachias, H. A. Bechtel, J. M. Klopf, L. M. Eng, S. C. Kehr, J. C. González, R. O. Freitas, and I. D. Barcelos

Compensating for artifacts in scanning near-field optical microscopy due to electrostatics

T. Nörenberg, L. Wehmeier, D. Lang, S. C. Kehr, and L. M. Eng

Propagative Oscillations in Codirectional Polariton Waveguide Couplers

J. Beierlein, E. Rozas, O. A. Egorov, M. Klaas, A. Yulin, H. Suchomel, T. H. Harder, M. Emmerling, M. D. Martín, I. A. Shelykh, C. Schneider, U. Peschel, L. Viña, S. Höfling, and S. Klembt

2020

(23 Publications)

Coherence and Interaction in Confined Room-Temperature Polariton Condensates with Frenkel Excitons

S. Betzold, M. Dusel, O. Kyriienko, C. P. Dietrich, S. Klembt, J. Ohmer, U. Fischer, I. A. Shelykh, C. Schneider, and S. Höfling

Nanoscale-confined terahertz polaritons in a van der Waals crystal

T. V. A. G. de Oliveira, T. Nörenberg, G. Álvarez-Pérez, L. Wehmeier, J. Taboada-Gutiérrez, M. Obst, F. Hempel, E. J. H. Lee, J. M. Klopf, I. Errea, A. Y. Nikitin, S. C. Kehr, P. Alonso-González, and L. M. Eng

Identifying carbon as the source of visible single-photon emission from hexagonal boron nitride

N. Mendelson, D. Chugh, J. R. Reimers, T. S. Cheng, A. Gottscholl, H. Long, C. J. Mellor, A. Zettl, V. Dyakonov, P. H. Beton, S. V. Novikov, C. Jagadish, H. H. Tan, M. J. Ford, M. Toth, C. Bradac, and I. Aharonovich

Spatially confined vector fields at material-induced resonances in near-field-coupled systems

H. Aminpour, L. M. Eng, and S. C. Kehr

Selective Out-of-Plane Optical Coupling between Vertical and Planar Microrings in a 3D Configuration

S. Valligatla, J. Wang, A. Madani, E. S. G. Naz, Q. Hao, C. N. Saggau, Y. Yin, L. Ma, and O. G. Schmidt

Small-Polaron Hopping and Low-Temperature (45-225 K) Photo-Induced Transient Absorption in Magnesium-Doped Lithium Niobate

S. Messerschmidt, A. Krampf, L. Vittadello, M. Imlau, T. Nörenberg, L. M. Eng, and D. Emin

Steering Directional Light Emission and Mode Chirality through Postshaping of Cavity Geometry

J. Wang, M. Tang, Y. Yang, Y. Yin, Y. Chen, C. N. Saggau, M. Zhu, X. Yuan, D. Karnaushenko, Y. Huang, L. Ma, and O. G. Schmidt

Exciton-polaritons in flatland: Controlling flatband properties in a Lieb lattice

T. H. Harder, O. A. Egorov, J. Beierlein, P. Gagel, J. Michl, M. Emmerling, C. Schneider, U. Peschel, S. Höfling, and S. Klembt

Controllable coherent absorption of counterpropagating laser beams in organic microcavities

C. Schmidt, M. Sudzius, S. Meister, H. Fröb, and K. Leo

Wafer-Scale High-Quality Microtubular Devices Fabricated via Dry-Etching for Optical and Microelectronic Applications

C. N. Saggau, F. Gabler, D. D. Karnaushenko, D. Karnaushenko, L. Ma, and O. G. Schmidt

Impact of the Energetic Landscape on Polariton Condensates' Propagation along a Coupler

E. Rozas, J. Beierlein, A. Yulin, M. Klaas, H. Suchomel, O. Egorov, I. A. Shelykh, U. Peschel, C. Schneider, S. Klembt, S. Höfling, M. D. Martín, and L. Viña

Nanostructured Borate Halides for Optical Second Harmonic Generation at Surfaces

D. Tan, B. Kirbus, L. M. Eng, and M. Ruck

Room temperature Organic Exciton-Polariton Condensate in a Lattice

M. Dusel, S. Betzold, O. A. Egorov, S. Klembt, J. Ohmer, U. Fischer, S. Höfling, and C. Schneider

Reciprocal skin effect and its realization in a topolectrical circuit

T. Hofmann, T. Helbig, F. Schindler, N. Salgo, M. Brzezińska, M. Greiter, T. Kiessling, D. Wolf, A. Vollhardt, A. Kabaši, C. H. Lee, A. Bilušić, R. Thomale, and T. Neupert

Generalized bulk–boundary correspondence in non-Hermitian topolectrical circuits

T. Helbig, T. Hofmann, S. Imhof, M. Abdelghany, T. Kiessling, L. W. Molenkamp, C. H. Lee, A. Szameit, M. Greiter, and R. Thomale

Resource-Efficient Low-Temperature Synthesis of Microcrystalline $Pb_2B_5O_9X$ (X = $Cl$, $Br$) for Surfaces Studies by Optical Second Harmonic Generation

D. Tan, B. Kirbus, M. Rüsing, T. Pietsch, M. Ruck, and L. M. Eng

Bloch Oscillations of Hybrid Light-Matter Particles in a Waveguide Array

J. Beierlein, O. A. Egorov, T. H. Harder, P. Gagel, M. Emmerling, C. Schneider, S. Höfling, U. Peschel, and S. Klembt

Orbital-Driven Rashba Effect in a Binary Honeycomb Monolayer $AgTe$

M. Ünzelmann, H. Bentmann, P. Eck, T. Kißlinger, B. Geldiyev, J. Rieger, S. Moser, R. C. Vidal, K. Kißner, L. Hammer, M. A. Schneider, T. Fauster, G. Sangiovanni, D. Di Sante, and F. Reinert

Influence of Irradiation on Defect Spin Coherence in Silicon Carbide

C. Kasper, D. Klenkert, Z. Shang, D. Simin, A. Gottscholl, A. Sperlich, H. Kraus, C. Schneider, S. Zhou, M. Trupke, W. Kada, T. Ohshima, V. Dyakonov, and G. V. Astakhov

Topological funneling of light

S. Weidemann, M. Kremer, T. Helbig, T. Hofmann, A. Stegmaier, M. Greiter, R. Thomale, and A. Szameit

Phonon-induced near-field resonances in multiferroic $BiFeO_3$ thin films at infrared and THz wavelengths

L. Wehmeier, T. Nörenberg, T. V. A. G. de Oliveira, J. M. Klopf, S. Yang, L. W. Martin, R. Ramesh, L. M. Eng, and S. C. Kehr

Correlating the Nanoscale Structural, Magnetic, and Magneto-Transport Properties in $SrRuO_3$-Based Perovskite Thin Films: Implications for Oxide Skyrmion Devices

G. Malsch, D. Ivaneyko, P. Milde, L. Wysocki, L. Yang, P. H. M. van Loosdrecht, I. Lindfors-Vrejoiu, and L. M. Eng

Giant topological longitudinal circular photo-galvanic effect in the chiral multifold semimetal CoSi

Z. Ni, K. Wang, Y. Zhang, O. Pozo, B. Xu, X. Han, K. Manna, J. Paglione, C. Felser, A. G. Grushin, F. de Juan, E. J. Mele, and L. Wu

2019

(3 Publications)

Polarization-dependent near-field phonon nanoscopy of oxides: $SrTiO_3, LiNbO_3$, and $PbZr_{0.2}Ti_{0.8}O_3$

L. Wehmeier, D. Lang, Y. Liu, X. Zhang, S. Winnerl, L. M. Eng, and S. C. Kehr

Anatomy of skin modes and topology in non-Hermitian systems

C. H. Lee and R. Thomale

Demonstration of a two-dimensional ${\cal P}{\cal T}$-symmetric crystal

M. Kremer, T. Biesenthal, L. J. Maczewsky, M. Heinrich, R. Thomale, and A. Szameit

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