Welcome to the Huber group at the University of Regensburg!
Many of the fundamental laws and unexpected phenomena in condensed matter physics are caused by extremely fast dynamics of electrons and ions on the femtosecond time (1 fs = 10-15 s) and terahertz frequency scale (1 THz = 1012 Hz). Unravelling such ultrafast processes is the main interest of our research. We develop next-generation, high-intensity femtosecond laser sources and THz technology, and employ them to explore novel femtophysics.
Click on the images above or check our Research page for more information on our current work.
Our lecture on physics of atoms and molecules was awarded with the Best Lecture Award of the Faculty of Physics.
Image (from left to right): Manuel Meierhofer, Martin Zizlsperger, Felix Schiegl, Rupert Huber (professor), Christian Meineke, Johannes Hayes, Marlene Liebich
Missing: Lukas Kastner...
We studied the ultrafast dynamics of intersubband polaritons in the mid-infrared together with the groups of Raffaele Colombelli (Paris), Christoph Lange (Dortmund) and Iacopo Carusotto (Trento). Stimulated scattering occurs between these polaritons for resonant excitation, which we observe directly within the polaritonic bandstructure. This scattering mechanism could enable Bose-Einstein-condensates of intersubband polaritons for novel quantum computers and on-chip mid-infrared light sources.
The results have been published in Physical Review Letters....
In collaboration with the group of Heiko Weber (Friedrich-Alexander-Universität Erlangen-Nürnberg) we investigated mid-infrared light-field-driven tunneling currents in a Schottky diode, consisting of epitaxial graphene on silicon carbide. Our study gives insights into the intrinsic speed limits of rectification currents in these devices and paves the way towards light-field-driven electronics with increased functionality, such as transistors and logic circuits.
Press release (UR) in German
The results have been published in Science Advances....
We developed a novel, flexible and scalable emitter of extremely asymmetric and intense terahertz field transients together with the groups of Dominique Bougeard (UR) and Mackillo Kira (University of Michigan) as well as collaborators from the Helmut Schmidt University and the Justus Liebig University Gießen. Making use of shift currents and local charging dynamics in asymmetrically coupled epitaxial semiconductor heterostructures, we generated waveforms exhibiting less than an oscillation half-cycle, peak fields above 1.1 kV cm-1 and spectra spanning into the mid-infrared, marking a milestone for next-generation high-repetition-rate (multi-)terahertz sources.
Press release (University of Michigan) in English
Press release (Mirage) in English
Press release (Laser Focus World) in English
The results have been published in Light: Science & Applications....
We congratulate Martin Zizlsperger on winning the 2022 Maiman Student Paper Award, one of the most prestigious and honoured student awards in optics and photonics worldwide.
Press release (UR) in German....
For more News from our group, please click here or on the menu item on the left.
Our group regularly receives funding from national and international research agencies. Among them are:
The German Science Foundation
with funding for SFB 1277, and formerly GRK 1570 as well as smaller grants, like HU1598 and CO1492
The Collaborative Research Center SFB 1277
funded by the DFG and sponsoring our group through projects A05 and B02
The European Research Council
through several grants, including ERC grant 305003 (QUANTUMsubCYCLE) and ERC grant 681379 (SPRINT)
The Alexander von Humboldt Foundation
with several current and past fellowships, including funding for J. M. Menard, T. L. Cocker, and J. L. Boland
If you want to stay updated on our latest News and Breakthrough Science consider following us on Twitter @Huber_Group