-
opaq: My Almost-Startup
A few years ago, I tried to start a small hardware startup called opaq. The idea was to build a device that could detect black ice in front of vehicles using spectroscopy. The basic principle was simple: water, ice, and dry pavement reflect infrared light differently. By shining several infrared wavelengths onto the road and…
-
Fresnelli is now open source
I have made the numerical core of fresnel.li publicly available on GitHub. Fresnelli is a C++ program for calculating near-field diffraction patterns of complex apertures using an FFT-based implementation of the Rayleigh–Sommerfeld diffraction integral. The input field, propagation parameters, wavelength, sampling, and output file are defined through a simple configuration file. The source code and…
-
Quantum Active Matter Preprint on arXiv
The paper of my colleague Sabrina Burgardt “Quantum-enabled active matter at the atomic scale” is now on arXiv: https://arxiv.org/abs/2606.24615 The paper explores how individual cesium atoms can become active particles inside an ultracold rubidium bath. I am a coauthor on the paper and contributed the coupled-channel calculations for the Rb-Cs collision rates, which enter the…
-
BIC Paper now on the arXiv
Our paper on engineering a bound state in the continuum in an ultracold quantum gas is now on arXiv: https://arxiv.org/abs/2602.07809 This project builds on our Floquet-Feshbach work and uses the interference between two tunable resonances to make a state that sits inside the continuum but doesn’t decay. Now it is off to peer review, let’s…
-
My First Paper Has Been Published in Science Advances
I am very happy to share that our paper “Floquet engineering of Feshbach resonances in ultracold gases” has been published in Science Advances. 🎉 This project has been with me for quite a while. It started during my Master’s thesis, where I worked on the idea of controlling Feshbach resonances with strong radio-frequency magnetic fields.…
-
Invited Seminar at LPL Paris
I recently visited the Laboratoire de Physique des Lasers at Université Sorbonne Paris Nord for an seminar talk, following the invitation of Aurélien and Hélène Perrin. In the seminar, I presented our work on Floquet-Feshbach resonances and the preliminary results on a bound state in the continuum in an ultracold quantum gas. Thank you very…
-
Master’s Thesis on Floquet-Feshbach resonances
In April 2023, I completed my master’s thesis with the title Towards probing and understanding radio-frequency induced Floquet-Feshbach resonances in ultracold lithium-6 gases at RPTU Kaiserslautern-Landau (former TU Kaiserslautern) in the group of Artur Widera. The work centers on theoretical studies how the interaction between two colliding lithium-6 atoms can be modified using strong oscillatory…
-
Replacing the Lithium Oven
Recently, we had to replace the lithium oven on our experiment. The reason was simple: the atom number in the MOT had become suspiciously low, and the oven nozzle turned out to be clogged. So my colleague Felix Lang and I took the oven apart, removed the old heating tape and aluminum foil, and prepared…
