Michał Słowiński
Experimental physicist working on high-resolution molecular spectroscopy, precision measurements, and cryogenic experiments.
Bio
Most of my research revolves around high-resolution molecular spectroscopy - specifically, analyzing experimental data, spectral line shapes, and the effects of molecular collisions. I build theoretical models to interpret what we measure, and I write the software that handles measurement control, data acquisition, and analysis. Ultimately, my goal is to bridge raw experimental results with the physical processes that drive them.
Taking this work down to cryogenic temperatures has opened entirely new doors for precision spectroscopy. With reduced Doppler broadening and cleaner spectra, we can study molecular interactions in much greater detail and rigorously test ab initio and quantum-electrodynamic calculations. I’ve been involved in building our cryogenic setup since day one, back when our current labs were just storage rooms for obsolete gear. Since then, I’ve helped shape the main experimental concept, drafted CAD designs for various components, and designed the optical cavity. I'm still hands-on with the daily construction and upgrades to the setup.
Beyond the pure research, I help keep the lab running smoothly. That involves everything from designing equipment mounts and setting up cooling circuits for cryocooler compressors, to tweaking UV lasers for specific experimental needs. I also handle the practical side of things: coordinating equipment orders, managing lab supplies, and keeping our group’s website up to date.
When I'm not in the lab, I’m a happy husband and a proud dad to two daughters.
Research interests
- cavity-enhanced molecular spectroscopy
- cryogenic spectroscopy
- beyond-Voigt line-shape models
- spectroscopic data analysis
Education
PhD in Physical Sciences
Institute of Physics, Nicolaus Copernicus University in Toruń
Collisional effects in accurate rovibrational spectroscopy of simple diatomic molecules
Supervisor: Prof. Piotr Wcisło
Msc Eng in Technical Physics
Institute of Physics, Nicolaus Copernicus University in Toruń
Calculations of spectral line-shape parameters and their temperature dependence (in Polish)
Supervisor: Prof. Ryszard S. Trawiński
BSc in Physics
Institute of Physics, Nicolaus Copernicus University in Toruń
The problem of dispersion in optical cavities (in Polish)
Supervisor: Dr Piotr Masłowski
Selected publications
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[1]
Cavity-enhanced spectroscopy in the deep cryogenic regime for quantum sensing and metrology. Nature Physics 22, 637–643 (2026). DOI: 10.1038/s41567-026-03204-8
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[2]
New beyond-Voigt line-shape profile recommended for the HITRAN database. Journal of Quantitative Spectroscopy and Radiative Transfer 347, 109596 (2025). DOI: 10.1016/j.jqsrt.2025.109596
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[3]
Collisional line-shape effects in accurate He-perturbed H₂ spectra. Journal of Quantitative Spectroscopy and Radiative Transfer 277, 107951 (2022). DOI: 10.1016/j.jqsrt.2021.107951
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[4]
Cryogenic mirror position actuator for spectroscopic applications. Review of Scientific Instruments 93, 115003 (2022). DOI: 10.1063/5.0116691
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[5]
H₂–He collisions: Ab initio theory meets cavity-enhanced spectra. Physical Review A 101, 052705 (2020). DOI: 10.1103/PhysRevA.101.052705
Selected Conference Contributions
- HRMS 2026 — Prague, Czech Republic, August 31 – September 4, 2026
- Cavity-Enhanced Spectroscopy in the Deep Cryogenic Regime for Quantum Sensing and Metrology (Talk)
- New beyond-Voigt line-shape profile recommended for the HITRAN database (Poster)
- ICSLS 2026 — Luleå, Sweden, August 9–14, 2026
- New beyond-Voigt line-shape profile recommended for the HITRAN database (Talk)
- Toward First-Principles Spectroscopic Databases: CO–N₂ Line Shapes in the 3–0 Band (Poster)
- ICSLS 2022 — Caserta, Italy, June 19–24, 2022
- Confrontation of the molecular hydrogen spectra in the presence of noble gases with ab initio calculation (Talk)
- β-corrected hard-collision model in spectral line shape analysis (Poster)
- EGAS 2018 — Kraków, Poland, July 9–13, 2018
- Effect of Berry phase on the core of Ly-α line in an external slowly rotating electric field (Poster)
- ICSLS 2018 — Dublin, Ireland, June 17–22, 2018
- H2-He Interaction And Its Scattering States Observation With Highly Accurate Cavity-Enhanced Spectroscopy (Talk)
- Accurate Line Shape Measurement of D2-He and Comparison with ab initio Calculation (Poster)
- IMAMPC 2017 — Toruń, Poland, June 19–22, 2017
- Oxygen Spectra in O2-N2 Mixture Measured with FS-CRDS (Poster)