Computational Optoelectronics and Photonics

Research

We are interested in the optical, electronic and quantum optical properties of different material systems, which we analyse by microscopic theory and numerical simulations. For example, we investigate situations in which matter is excited by very short laser pulses. This allows us to study in detail ultrafast dynamical processes that occur on time scales of a few femtoseconds (1 fs = 10^-15 s) or even in the range of attoseconds (1 as = 10^-18 s). Nonlinearities resulting from the interaction with very intense light pulses can drastically change the optical properties. Besides purely optical processes, optically induced transport phenomena are also of great interest. Furthermore, a strong focus is on investigating interactions with quantum light, which sheds new light on the fundamentals of the interaction between light and matter and is very promising for various applications in quantum technology.

Team

We are a diverse international team working on the different topics and projects.

Publications

See complete list in our Research Information System
see also ORCID profile and google scholar profile of Torsten Meier

Seleted recent publications

Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation,
D. A. Kopylov, M. Stefszky, T. Meier, C. Silberhorn, and P. R. Sharapova,
arXiv:2501.08917

Wave packet dynamics in parabolic optical lattices: From Bloch oscillations to long-range dynamical tunneling,
U. Ali, M. Holthaus, and T. Meier,
arXiv:2410.10727 [quant-ph] & Physical Review Research, accepted (2025)

Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential,
U. Ali, M. Holthaus, and T. Meier,
New Journal of Physics 23, 123016 (2024).

Charge-transfer magnetoexcitons in magneto absorption spectra of asymmetric type II double quantum wells,
J. Röder, M. Gerhard, C. Fuchs, W. Stolz, W. Heimbrodt, M. Koch, C. Ngo, J.T. Steiner, and T. Meier,
Phys. Rev. B 110, 195306 (2024).

Sub-cycle strong-field tunneling dynamics in solids,
S. Yang, X. Liu, H. Zhang, X. Song, R. Zuo, T. Meier, and W. Yang,
Optics Express 32, 15862 (2024)

Theory of Multimode Squeezed Light Generation in Lossy Media,
D. A. Kopylov, T. Meier, and P. R. Sharapova,
arXiv:2403.05259 [quant-ph]

Optical Stark effect in type-II semiconductor heterostructures,
F. Schäfer, A. Trautmann, C. Ngo, J.T. Steiner, C. Fuchs, K. Volz, F. Dobener, M. Stein, T. Meier, and S. Chatterjee,
Phys. Rev. B 109, 075301 (2024),

Microscopic simulations of the dynamics of excitonic many-body correlations coupled to quantum light,
H. Rose, P. Sharapova, and T. Meier,
Proceedings of the SPIE 12884, 1288403 (2024).

Projects

Two projects in the DFG TRR 142/3 Tailored nonlinear photonics:
From fundamental concepts to functional structures:
A02 "Nonlinear spectroscopy of semiconductor nanostructures with quantum light" (Akimov (TU Dortmund), Meier);
A10 "Nonlinear strong-field dynamics of atomically thin transition metal dichalcogenides" (Lange & Ruppert (TU Dortmund), Meier).

PI in the project "Photonisches Quantencomputing" (PhoQC), which is supported by the Ministry for Cuture and Science of the state of North Rhine-Westphalia.

Mobility grant by the Sino-German Center for Research Promotion (SGC) (joint venture of the National Natural Science Foundation of China (NSFC) and the DFG), Three-Dimensional Microscopic Simulations of High-Harmonic Generation and Strong Field Phenomena in Semiconductors, together with Prof. Xiaohong Song (Hainan University).

A complete list of projects is available in our project database