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Prof. Dr. Torsten Meier

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

 

Selected recent publications

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 114, 043101 (2026).

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

Logo CeOPP

CeOPP: Cen­ter for Op­to­elec­tron­ics and Photon­ics

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PC2: Pader­born Cen­ter for Par­al­lel Com­put­ing

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PhoQS: Photon­ic Quantum Sys­tems

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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!

Fo­cus Ses­sion "Tran­si­ent multi-wave mix­ing on ex­citon­ic res­on­ances" at DPG spring meet­ing in Dresden

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Con­tact

Prof. Dr. Torsten Meier

Computational Optoelectronics and Photonics

Room N3.338
Paderborn University
Pohlweg 55
33098 Paderborn

+49 5251 60-2336 Send E-Mail Directions

Computational Optoelectronics and Photonics

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Publications Persons Teaching Torsten Meier