Attosecond X-ray Science

We generate attosecond pulses in the soft X-ray spectral range (200 eV and higher) since such pulses permit probing the flow of energy at the absorption edges of atoms inside molecules and materials.

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Extreme Photonics

Extreme photonics is concerned with the interaction of intense light fields with matter. For instance, we investigate, and use physical phenomena such as filamentation and solid harmonic generation to study X-wave generation.

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Quantum Dynamics

We study electron dynamics to determine whether and how a molecule dissociates and how a chemical reaction occurs; electrons sustain the energy flow in human vision or of our nerve system, and they determine whether biological life ends.

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Ultrafast Laser Science

Our focus is on the generation of mid-infrared few-cycle and CEP-stable intense sources at high repetition rates beyond the kHz, thereby pushing the limits of average laser power.

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1.
Koh, S. Y. et al. Simultaneous High-Fidelity Readout and Strong Coupling for a Donor-Based Spin Qubit. Phys. Rev. B 113, 205306 (2026).
1.
Hu, S. et al. Ultrafast decoherence in solid-state high-harmonic generation induced by nuclear-electronic entanglement. Science Advances 12, eaea7877 (2026).
1.
Seyler, K. L. et al. Valleytronics in 2D Materials Roadmap. Preprint at https://doi.org/10.48550/arXiv.2603.01427 (2026).
1.
Pegoraro, F., Held, P., Lammers, J., Brecht, B. & Silberhorn, C. Demonstration of a quantum C-NOT Gate in a Time-Multiplexed fully reconfigurable photonic processor. ArXiv https://doi.org/https://doi.org/10.48550/arXiv.2412.02478 (2026) doi:https://doi.org/10.48550/arXiv.2412.02478.
1.
Xia, M. et al. Fast superconducting qubit control with subharmonic drives. Nat Commun 17, 1024 (2025).

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