@article{45704,
abstract = {{Since high-order harmonic generation (HHG) from atoms depends sensitively on the polarization of the driving laser field, the polarization gating (PG) technique was developed and applied successfully to generate isolated attosecond pulses from atomic gases. The situation is, however, different in solid-state systems as it has been demonstrated that due to collisions with neighboring atomic cores of the crystal lattice strong HHG can be generated even by elliptically- and circularly-polarized laser fields. Here we apply PG to solid-state systems and find that the conventional PG technique is inefficient for the generation of isolated ultrashort harmonic pulse bursts. In contrast, we demonstrate that a polarization-skewed laser pulse is able to confine the harmonic emission to a time window of less than one-tenth of the laser cycle. This method provides a novel way to control HHG and to generate isolated attosecond pulses in solids.}},
author = {{Song, Xiaohong and Yang, Shidong and Wang, Guifang and Lin, Jianpeng and Wang, Liang and Meier, Torsten and Yang, Weifeng}},
issn = {{1094-4087}},
journal = {{Optics Express}},
keywords = {{Atomic and Molecular Physics, and Optics}},
number = {{12}},
publisher = {{Optica Publishing Group}},
title = {{{Control of the electron dynamics in solid-state high harmonic generation on ultrafast time scales by a polarization-skewed laser pulse}}},
doi = {{10.1364/oe.491418}},
volume = {{31}},
year = {{2023}},
}
@article{45703,
author = {{Zuo, Ruixin and Song, Xiaohong and Ben, Shuai and Meier, Torsten and Yang, Weifeng}},
issn = {{2643-1564}},
journal = {{Physical Review Research}},
keywords = {{General Physics and Astronomy}},
number = {{2}},
publisher = {{American Physical Society (APS)}},
title = {{{Revealing the nonadiabatic tunneling dynamics in solid-state high harmonic generation}}},
doi = {{10.1103/physrevresearch.5.l022040}},
volume = {{5}},
year = {{2023}},
}
@article{45709,
author = {{Belobo, D. Belobo and Meier, Torsten}},
issn = {{2211-3797}},
journal = {{Results in Physics}},
keywords = {{General Physics and Astronomy}},
publisher = {{Elsevier BV}},
title = {{{Manipulation of nonautonomous nonlinear wave solutions of the generalized coupled Gross–Pitaevskii equations with spin–orbit interaction and weak Raman couplings}}},
doi = {{10.1016/j.rinp.2023.106655}},
year = {{2023}},
}
@article{43827,
abstract = {{A series of new organic donor–π–acceptor dyes incorporating a diquat moiety as a novel electron-acceptor unit have been synthesized and characterized. The analytical data were supported by DFT calculations. These dyes were explored in the aerobic thiocyanation of indoles and pyrroles. Here they showed a high photocatalytic activity under visible light, giving isolated yields of up to 97 %. In addition, the photocatalytic activity of standalone diquat and methyl viologen through formation of an electron donor acceptor complex is presented.}},
author = {{Meier, Armin and Badalov, Sabuhi and Biktagirov, Timur and Schmidt, Wolf Gero and Wilhelm, René}},
issn = {{0947-6539}},
journal = {{Chemistry – A European Journal}},
keywords = {{General Chemistry, Catalysis, Organic Chemistry}},
number = {{22}},
pages = {{ e202203541}},
publisher = {{Wiley}},
title = {{{Diquat Based Dyes: A New Class of Photoredox Catalysts and Their Use in Aerobic Thiocyanation}}},
doi = {{10.1002/chem.202203541}},
volume = {{ 29}},
year = {{2023}},
}
@article{55900,
author = {{Scharwald, Dennis and Meier, Torsten and Sharapova, Polina}},
issn = {{2643-1564}},
journal = {{Physical Review Research}},
number = {{4}},
publisher = {{American Physical Society (APS)}},
title = {{{Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers}}},
doi = {{10.1103/physrevresearch.5.043158}},
volume = {{5}},
year = {{2023}},
}
@article{61252,
abstract = {{AbstractThe biexciton‐exciton emission cascade commonly used in quantum‐dot systems to generate polarization entanglement yields photons with intrinsically limited indistinguishability. In the present work, it focuses on the generation of pairs of photons with high degrees of polarization entanglement and simultaneously high indistinguishability. It achieves this goal by selectively reducing the biexciton lifetime with an optical resonator. It demonstrates that a suitably tailored circular Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement of biexciton emission paired with spectrally broad photon extraction and twofold degenerate optical modes. The in‐depth theoretical study combines (i) the optimization of realistic photonic structures solving Maxwell's equations from which model parameters are extracted as input for (ii) microscopic simulations of quantum‐dot cavity excitation dynamics with full access to photon properties. It reports non‐trivial dependencies on system parameters and use the predictive power of the combined theoretical approach to determine the optimal range of Purcell enhancement that maximizes indistinguishability and entanglement to near unity values, here specifically for the telecom C‐band at 1550 nm.}},
author = {{Bauch, David and Siebert, Dustin and Jöns, Klaus D. and Förstner, Jens and Schumacher, Stefan}},
issn = {{2511-9044}},
journal = {{Advanced Quantum Technologies}},
number = {{1}},
publisher = {{Wiley}},
title = {{{On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs}}},
doi = {{10.1002/qute.202300142}},
volume = {{7}},
year = {{2023}},
}
@article{61266,
abstract = {{This review examines the use of continuous-variable spectroscopy techniques for investigating quantum coherence and light-matter interactions in semiconductor systems with ultrafast dynamics. Special emphasis is placed on multichannel homodyne detection as a powerful tool to measure the quantum coherence and the full density matrix of a polariton system. Observations, such as coherence times that exceed the nanosecond scale obtained by monitoring the temporal decay of quantum coherence in a polariton condensate, are discussed. Proof-of-concept experiments and numerical simulations that demonstrate the enhanced resourcefulness of the produced system states for modern quantum protocols are assessed. The combination of tailored resource quantifiers and ultrafast spectroscopy techniques that have recently been demonstrated paves the way for future applications of quantum information technologies.}},
author = {{Lüders, Carolin and Barkhausen, Franziska and Pukrop, Matthias and Rozas, Elena and Sperling, Jan and Schumacher, Stefan and Aßmann, Marc}},
issn = {{2159-3930}},
journal = {{Optical Materials Express}},
number = {{11}},
publisher = {{Optica Publishing Group}},
title = {{{Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy [Invited]}}},
doi = {{10.1364/ome.497006}},
volume = {{13}},
year = {{2023}},
}
@article{61264,
author = {{Yu, Yueyang and Dong, Chuan-Ding and Binder, Rolf and Schumacher, Stefan and Ning, Cun-Zheng}},
issn = {{1936-0851}},
journal = {{ACS Nano}},
number = {{5}},
pages = {{4230--4238}},
publisher = {{American Chemical Society (ACS)}},
title = {{{Strain-Induced Indirect-to-Direct Bandgap Transition, Photoluminescence Enhancement, and Linewidth Reduction in Bilayer MoTe2}}},
doi = {{10.1021/acsnano.2c01665}},
volume = {{17}},
year = {{2023}},
}
@article{61269,
author = {{Gao, Ying and Ma, Xuekai and Zhai, Xiaokun and Xing, Chunzi and Gao, Meini and Dai, Haitao and Wu, Hao and Liu, Tong and Ren, Yuan and Wang, Xiao and Pan, Anlian and Hu, Wei and Schumacher, Stefan and Gao, Tingge}},
issn = {{2469-9950}},
journal = {{Physical Review B}},
number = {{20}},
publisher = {{American Physical Society (APS)}},
title = {{{Single-shot spatial instability and electric control of polariton condensates at room temperature}}},
doi = {{10.1103/physrevb.108.205303}},
volume = {{108}},
year = {{2023}},
}
@article{61267,
abstract = {{Dynamics-induced interchain charge transfer in a polymer aggregate in stack configuration can be understood by single-oligomer polaron energy.}},
author = {{Bauch, Fabian and Dong, Chuan-Ding and Schumacher, Stefan}},
issn = {{2050-7526}},
journal = {{Journal of Materials Chemistry C}},
number = {{38}},
pages = {{12992--12998}},
publisher = {{Royal Society of Chemistry (RSC)}},
title = {{{Dynamics-induced charge transfer in semiconducting conjugated polymers}}},
doi = {{10.1039/d3tc02263c}},
volume = {{11}},
year = {{2023}},
}
@inproceedings{61362,
abstract = {{We study the interaction of gray tracking and DC ionic conductivity in Potassium Titanyl Phosphate (KTiOPO4, KTP) and present a novel way to reduce conductivity via a potassium nitrate treatment improving the device quality.}},
author = {{Eigner, Christof and Padberg, Laura and Quiring, Viktor and Bocchini, Adriana and Santandrea, Matteo and Gerstmann, Uwe and Schmidt, Wolf Gero and Silberhorn, Christine}},
booktitle = {{CLEO 2023}},
publisher = {{Optica Publishing Group}},
title = {{{Potassium Titanyl Phosphate Material Engineering Boosting Integrated Optical Source Performance}}},
doi = {{10.1364/cleo_at.2023.jw2a.57}},
year = {{2023}},
}
@inbook{61360,
author = {{Hajduk, Andreas and Zare Pour, Mohammad Amin and Paszuk, Agnieszka and Guidat, Margot and Löw, Mario and Ullmann, Fabian and Moritz, Dominik C. and Hofmann, Jan P. and Krischok, Stefan and Runge, Erich and Schmidt, Wolf Gero and Jaegermann, Wolfram and May, Matthias M. and Hannappel, Thomas}},
booktitle = {{Encyclopedia of Solid-Liquid Interfaces}},
isbn = {{9780323856706}},
publisher = {{Elsevier}},
title = {{{(Photo-)electrochemical reactions on semiconductor surfaces, part B: III-V surfaces–atomic and electronic structure}}},
doi = {{10.1016/b978-0-323-85669-0.00113-6}},
year = {{2023}},
}
@article{40274,
author = {{Zhai, Xiaokun and Ma, Xuekai and Gao, Ying and Xing, Chunzi and Gao, Meini and Dai, Haitao and Wang, Xiao and Pan, Anlian and Schumacher, Stefan and Gao, Tingge}},
journal = {{Physical Review Letters}},
number = {{13}},
pages = {{136901}},
title = {{{Electrically controlling vortices in a neutral exciton polariton condensate at room temperature}}},
doi = {{10.1103/PhysRevLett.131.136901}},
volume = {{131}},
year = {{2023}},
}
@article{36416,
author = {{De, Jianbo and Ma, Xuekai and Yin, Fan and Ren, Jiahuan and Yao, Jiannian and Schumacher, Stefan and Liao, Qing and Fu, Hongbing and Malpuech, Guillaume and Solnyshkov, Dmitry}},
issn = {{0002-7863}},
journal = {{Journal of the American Chemical Society (JACS)}},
keywords = {{Colloid and Surface Chemistry, Biochemistry, General Chemistry, Catalysis}},
number = {{3}},
pages = {{1557--1563}},
publisher = {{American Chemical Society (ACS)}},
title = {{{Room-Temperature Electrical Field-Enhanced Ultrafast Switch in Organic Microcavity Polariton Condensates}}},
doi = {{10.1021/jacs.2c07557}},
volume = {{145}},
year = {{2023}},
}
@article{35077,
author = {{Liang, Qian and Ma, Xuekai and Long, Teng and Yao, Jiannian and Liao, Qing and Fu, Hongbing}},
issn = {{1433-7851}},
journal = {{Angewandte Chemie International Edition}},
keywords = {{General Chemistry, Catalysis}},
number = {{9}},
publisher = {{Wiley}},
title = {{{Circularly Polarized Lasing from a Microcavity Filled with Achiral Single‐Crystalline Microribbons}}},
doi = {{10.1002/anie.202213229}},
volume = {{62}},
year = {{2023}},
}
@article{41035,
author = {{Sharapova, Polina R. and Kruk, Sergey S. and Solntsev, Alexander S.}},
issn = {{1863-8880}},
journal = {{Laser & Photonics Reviews}},
keywords = {{Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
publisher = {{Wiley}},
title = {{{Nonlinear Dielectric Nanoresonators and Metasurfaces: Toward Efficient Generation of Entangled Photons}}},
doi = {{10.1002/lpor.202200408}},
year = {{2023}},
}
@article{54849,
abstract = {{The third‐order susceptibility of lithium niobate (LiNbO3) is calculated within a Berry‐phase formulation of the dynamical polarization based on the electronic structure obtained within density‐functional theory (DFT). Maximum values of the order of m V are calculated for photon energies between 1.2 and 2 eV, i.e., in the lower half of the optical bandgap of lithium niobate. Both free and bound electron (bi)polarons are found to lead to a remarkable enhancement of the third‐order susceptibility for photon energies below 1 eV.}},
author = {{Kozub, Agnieszka L. and Gerstmann, Uwe and Schmidt, Wolf Gero}},
issn = {{0370-1972}},
journal = {{physica status solidi (b)}},
number = {{2}},
publisher = {{Wiley}},
title = {{{Third‐Order Susceptibility of Lithium Niobate: Influence of Polarons and Bipolarons}}},
doi = {{10.1002/pssb.202200453}},
volume = {{260}},
year = {{2022}},
}
@article{37318,
abstract = {{Abstract
The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high-Q cavities which strongly enhance the light–matter coupling. Cavities with low Q-factors are generally given less attention due to their high losses that quickly destroy quantum systems. However, bad cavities can be utilized for several applications, where lower Q-factors are required, e.g., to increase the spectral width of the cavity mode. In this work, we demonstrate that low-Q cavities can be beneficial for preparing specific electronic steady states when certain quantum states of light are applied. We investigate the interaction between quantum light with various statistics and matter represented by a Λ-type three-level system in lossy cavities, assuming that cavity losses are the dominant loss mechanism. We show that cavity losses lead to non-trivial electronic steady states that can be controlled by the loss rate and the initial statistics of the quantum fields. We discuss the mechanism of the formation of such steady states on the basis of the equations of motion and present both analytical expressions and numerical simulations for such steady states.}},
author = {{Rose, Hendrik and Tikhonova, O V and Meier, Torsten and Sharapova, Polina}},
issn = {{1367-2630}},
journal = {{New Journal of Physics}},
keywords = {{General Physics and Astronomy}},
number = {{6}},
publisher = {{IOP Publishing}},
title = {{{Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities}}},
doi = {{10.1088/1367-2630/ac74d8}},
volume = {{24}},
year = {{2022}},
}
@article{37319,
author = {{Grisard, S. and Rose, Hendrik and Trifonov, A. V. and Reichhardt, R. and Reiter, D. E. and Reichelt, Matthias and Schneider, C. and Kamp, M. and Höfling, S. and Bayer, M. and Meier, Torsten and Akimov, I. A.}},
issn = {{2469-9950}},
journal = {{Physical Review B}},
number = {{20}},
publisher = {{American Physical Society (APS)}},
title = {{{Multiple Rabi rotations of trions in InGaAs quantum dots observed by photon echo spectroscopy with spatially shaped laser pulses}}},
doi = {{10.1103/physrevb.106.205408}},
volume = {{106}},
year = {{2022}},
}
@inproceedings{37329,
author = {{Trautmann, Alexander and Zuo, Ruixin and Wang, Guifang and Hannes, Wolf-Rüdiger and Yang, Shidong and Thong, Le Huu and Ngo, Cong and Steiner, Johannes and Ciappina, Marcelo and Reichelt, Matthias and Duc, Huynh Thanh and Song, Xiaohong and Yang, Weifeng and Meier, Torsten}},
booktitle = {{Ultrafast Phenomena and Nanophotonics XXVI}},
editor = {{Betz, Markus and Elezzabi, Abdulhakem Y.}},
title = {{{Microscopic simulations of high harmonic generation from semiconductors}}},
doi = {{10.1117/12.2607447}},
volume = {{11999}},
year = {{2022}},
}