fields We are an interdisciplinary group of theoretical physicists and chemists located at the Faculty of Physics of the University of Warsaw. We are a part of the Department of Modeling Complex Systems at the Institute of Theoretical Physics. We are also a part of Centre for Atomic Molecular and Optical Physics.

We work on the intersection of theoretical atomic, molecular, and optical (AMO) physics and quantum chemistry. We are primary interested in engineering novel controllable quantum molecular systems for both fundamental research and upcoming quantum technologies.

Research topics investigated in our group include:

  • Cold hybrid ion-neutral systems.
  • Formation, dynamics, and control of ultracold molecules.
  • Ultracold controlled collisions and chemical reactions.
  • Magnetically tunable Feshbach resonances in ultracold gases.
  • Quantum dynamics and simulations with quantum few-body systems.
  • Matter-light interactions and photochemistry.

Research highlights:

  • T. Karman, M. Tomza, J. Pérez-Ríos
    Ultracold Chemistry: a testbed for theoretical few-body physics
    Nature Phys. 20, 722 (2024)
  • S. Finelli, A. Ciamei, B. Restivo, M. Schemmer, M. Inguscio, A. Trenkwalder, K. Zaremba-Kopczyk, M. Gronowski, M. Tomza, M. Zaccanti
    Ultracold LiCr: a new pathway to quantum gases of paramagnetic polar molecules
    PRX Quantum in press (2024)
  • J. J. Park, H. Son, Y.-K. Lu, T. Karman, M. Gronowski, M. Tomza, A. O. Jamison, W. Ketterle
    Spectrum of Feshbach resonances in NaLi + Na collisions
    Phys. Rev. X 13, 031018 (2023)
  • P. Weckesser, F. Thielemann, D. Wiater, A. Wojciechowska, L. Karpa, K. Jachymski, M. Tomza, T. Walker, T. Schaetz
    Observation of Feshbach resonances between a single ion and ultracold atoms
    Nature 600, 429 (2021)
  • T. Feldker, H. Fürst, H. Hirzler, N. V. Ewald, M. Mazzanti, D. Wiater, M. Tomza, R. Gerritsma
    Buffer gas cooling of a trapped ion to the quantum regime
    Nature Phys. 16, 413 (2020)
  • M. Tomza, K. Jachymski, R. Gerritsma, A. Negretti, T. Calarco, Z. Idziaszek, P. S. Julienne
    Cold hybrid ion-atom systems
    Rev. Mod. Phys. 91, 035001 (2019)
  • A. D. Dörfler, P. Eberle, D. Koner, M. Tomza, M. Meuwly, S. Willitsch
    Long-range versus short-range effects in cold molecular ion-neutral collisions
    Nature Commun. 10, 5429 (2019)
  • T. Schmid, C. Veit, N. Zuber, R. Löw, T. Pfau, M. Tarana, M. Tomza
    Rydberg molecules for ion-atom scattering in the ultracold regime
    Phys. Rev. Lett. 120, 153401 (2018)
  • M. Tomza
    Energetics and control of ultracold isotope-exchange reactions between heteronuclear dimers in external fields
    Phys. Rev. Lett. 115, 063201 (2015)
  • M. Tomza, R. Gonzalez-Ferez, C. P. Koch, R. Moszynski
    Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light
    Phys. Rev. Lett. 112, 113201 (2014)


  • A. Dawid, J. Arnold, B. Requena, A. Gresch, M. Płodzień, K. Donatella, K. Nicoli, P. Stornati, R. Koch, M. Büttner, R. Okuła, G. Muñoz–Gil, R. A. Vargas–Hernández, A. Cervera-Lierta, J. Carrasquilla, V. Dunjko, M. Gabrié, P. Huembeli, E. van Nieuwenburg, F. Vicentini, L. Wang, S. J. Wetzel, G. Carleo, E. Greplová, R. Krems, F. Marquardt, M. Tomza, M. Lewenstein, A. Dauphin
    Machine learning in quantum sciences
    Cambridge University Press in press (2024) / arxiv (2023)

Research meetings:

Group photos:

Spring 2023

Autumn 2021

Summer 2019