Computational Optoelectronics and Photonics

Forschung

Wir interessieren uns für optische, elektronische und quantenoptische Eigenschaften, die wir durch mikroskopische Theorie und numerische Simulationen analysieren. Zum Beispiel untersuchen wir Situationen, in denen Materie durch sehr kurze Laserpulse angeregt wird. Dies ermöglicht es, sehr schnelle dynamische Prozesse, die auf Zeitskalen von wenigen Femtosekunden (1 fs = 10^-15 s) oder sogar im Bereich von Attosekunden (1 as = 10^-18 s) ablaufen, detailliert zu untersuchen. Nichtlinearitäten, die aus der Wechselwirkung mit sehr intensiven Lichtimpulsen resultieren, können die optischen Eigenschaften drastisch verändern. Neben rein optischen Prozessen sind auch optisch induzierte Transportphänomene von großem Interesse. Ein wichtiger Fokus ist zudem die Analyse der Wechselwirkung mit Quantenlicht, die für neuartige Anwendungen in der Quantentechnologie sehr vielversprechend ist.

Team

Wir sind ein vielfältiges internationales Team, das die unterschiedlichen Themen und Projekte bearbeitet.

Publikationen

Vollständige Liste im Research Information System öffnen
Siehe auch ORCID profile und google scholar profile von Torsten Meier

Auswahl aktueller Publikationen

Photon-Statistics-Induced Plateau Reshaping in Solid-State High-Harmonic Generation Driven by Bright Squeezed Vacuum,
S. Yang, J. Lin, X. Liu, Y. Jiang, T. Meier, X. Song, and W. Yang,
Phys. Rev. A, accepted.

Near-bandgap harmonic generation in solids from multiple scattering revealed by complex quantum trajectories,
X. Huo, X. Liu, S. Yang, X. Song, T. Meier, and W. Yang,
Physical Review Research 8, 033303 (2026).

An ultra-bright, highly-scalable, squeezed light source for hybrid quantum photonics,
K.-H. Luo, D. Kopylov, F. Lütkewitte, J. -L. Eickmann, S. Atzeni, F. Schlue, B. Brecht, T. Meier, P. Sharapova, M. Stefszky, and C. Silberhorn,
arXiv:2608.18950 [quant-ph]

Increase of intensity-dependent excitonic second- and third-harmonic generation induced by static electric fields demonstrated for the K exciton of a 2H homobilayer of MoS₂,
R. Zuo, M. Reichelt, C. Ngo, X. Song, W. Yang, and T. Meier,
Phys. Rev. B 113, 205309 (2026).

Assessing the classicality of photon echo from excitons in lead halide perovskite nanocrystals,
G. Alkhalil, H. Rose, A.V. Trifonov, P. Sharapova, J. Sperling, D.R. Yakovlev, E.V. Kolobkova, M.S. Kuznetsova, M. Aßmann, M. Bayer, T. Meier, and I.A. Akimov,
arXiv:2603.25996 [cond-mat.mes-hall]

Gain-induced spectral non-degeneracy in type-II parametric down-conversion,
B. Taheri, D. Kopylov, M. Hammer, T. Meier, J. Förstner, and P. R. Sharapova,
arXiv:2603.01656 [quant-ph]

Netzwerke

NEWS

NOEKS 18 - International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors

The 18th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS 18) will take place at
Paderborn University, September 26-30, 2027. Further information please visit: https://go.upb.de/noeks18

Visit of Humboldt-funded guest scientist Prof. Bernard Essimbi

From May to July 2026, Prof. Dr. Bernard Essimbi from the University of Yaoundé I, Cameroon, visits Paderborn. During his stay, which is funded by the Alexander von Humboldt Foundation, he will work on the project “Nonlinear Dynamics of Semiconductor Lasers and Resonant Tunneling Diode Integrated Optoelectronic Oscillators". Welcome Prof. Essimbi!

Successful PhD defense of Dr. Usman Ali

On April 30th, 2025, Dr. Usman Ali successfully defended his thesis “Quantum dynamics in parametrically driven one-dimensional optical lattices”. Congratulations, well done, and all the best for Oldenburg, Usman!

Dr. Ruixin Zuo successfully defended her PhD

On March 25th, 2025, Dr. Ruixin Zuo presented the results of her thesis “Microscopic investigations of light induced harmonic generation: Ultrafast carrier dynamics and excitonic effects” and successfully passed the oral examination of the committee. Congratulations and well done, Ruixin!

Successful PhD defense of Dr. Cong Thanh Ngo

On February 18, 2025, Dr. Cong Thanh Ngo successfully defended his dissertation on:
“Microscopic Analysis of the Nonlinear Optical Properties of Semiconductor Quantum Well Structures: Excitonic Anomalous Currents and Many-Body Correlations of Charge-Transfer Excitons”. Well done & Congratulations, Cong!