Research strategy

For many decades lasers have been most extensively used to study and investigate quantum systems and processes. As such studies focused mainly on the understanding of the system under observation, lasers were commonly used for probing or detection. Going a step further, laser-matter interactions were also found to permit control of quantum systems. Such control scenarios do not only rely on the strength of the laser-matter interaction. A rich variety of (on the first glance often quite surprising) phenomena arises, when the coherence of the driving radiation field is taken into account.

  © Katrin Binner / TU Darmstadt

In our research projects on Nonlinear Optics & Quantum Optics we develop and apply strong, coherent light-matter interactions to control optical properties and processes in quantum systems. In particular we aim at new protocols for optical memories (i.e. to store light pulses) and enhancement of ultra-fast, nonlinear frequency conversion processes. Our experiments involve lasers with pulse durations from the cw regime towards ultra-fast laser pulses, providing radiation from the mid-infrared towards the extreme-ultraviolet, driving interactions in gases, fluids, and specific solids.


Prof. Dr. Thomas Halfmann
Nichtlineare Optik/Quantenoptik
Institut für Angewandte Physik
Fachbereich 05 - Physik
Technische Universität Darmstadt
Hochschulstr. 6
D-64289 Darmstadt

+49 6151 16-20740

+49 6151 16-20741 (Sekretariat)

+49 6151 16-20327

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Opens external link in new windowT. Halfmann on Publons (ORCID)

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