Tomza Group on Quantum Molecular Systems

This week we host the Workshop on Ultracold Molecules @UniWarszawski organized by @MichalTomza and @SimonLCornish with @CandelaNGO!

📄 Our new research article on “Ultracold High-Spin Σ-State Polar Molecules for New Physics Searches” has been published in Physical Review X: journals.aps.org/prx/abstract/1… 🔬 We propose ultracold YbCr and similar high-spin polar molecules, featuring large internal electric fields and an ideal rotational structure controllable with modest laboratory fields, as a sensitive platform for probing physics beyond the Standard Model. ⚡ Searching for the electric dipole moment of the electron is a first step toward solving a major mystery in modern physics: why the Universe contains far more matter than antimatter. 🏆 Our collaborator and the first author, Alessio Ciamei, has already won an ERC Starting Grant to build the proposed experiment in Florence. 🚀 Stay tuned!

🚀 Big congratulations to our current postdoc Dr. Dibyendu Sardar on winning the 🏅 Individual Fellowship from 🇪🇺 Maria Skłodowska-Curie Actions !🔬 He will continue his research with Prof. François Lique at 🏛️ Université de Rennes in France 🇫🇷. 👏

Today, I had the great pleasure of participating in the panel “Quantum Technologies: Cybersecurity, Privacy Protection, and Development Opportunities for Poland” at the Congress on Data Protection and New Technologies, organized by @UODOgov_pl

To this end, we showed that the excited metastable X1⁢𝛴+b3⁢𝛱 electronic manifold supports field-linked tetramers in a broader range of electric fields with collisional shielding extended to zero field. The discovered phenomenon is more general, thus stay tuned!

We proposed proof-of-principle experiments to implement stimulated Raman adiabatic passage and photoassociation using field-linked tetramers, paving the way for the formation of deeply bound ultracold polyatomic molecules.

Our new research article on "Optical excitation and stabilization of ultracold field-linked tetratomic molecules" was published in @PhysRevLett by our excellent former postdoc Dr. @BijitMukherjee with Prof. @MichalTomza journals.aps.org/prl/abstract/1…

📚 2025 was a truly productive year!🌟 🚀10 submitted papers, 9 published papers, 1 published book, 8 papers under review or in press for 2026 ✨ 🥂 Cheers to an even brighter 2026! 🎉

#FunduszeUE #FunduszeEuropejskie

Prof. @MichalTomza participates and gives lectures at the Haikou Workshop and Winter School: Fundamentals and Frontiers of Ultracold Atoms and Molecules in Hainan in China organized by Prof. Xin-Yu Luo (罗鑫宇)

Sympozjum INTERACTIONS zakonczylo sie. Listopad też fajnym czasem na spotkania. A Toruń idealnym miejscem @UMK_Torun , no i dzieki @MichalTomza za wizyte przedłużoną o dzień i seminarium w IF

The interactions between laser-coolable molecules in excited electronic states were investigated for the first time, with implications for collisional losses among spin-polarized molecules.

Our new research article on "CaF+CaF interactions in the ground and excited electronic states: implications for collisional losses" was published in @PhysRevA by our excellent postdocs Dibyendu Sardarand & Marcin Gronowski with @MichalTomza & John Bohn journals.aps.org/pra/abstract/1…

🍂 Mid-autumn group dinner to celebrate recent scientific success 🚀, welcome new group members, and wish farewell to those leaving for professor positions 🎓✨

Prof. @MichalTomza began his participation in the Science and Technology in Society Forum in Kyoto with the Young Leaders Program and discussions with Nobel Prize winners on research funding, the knowledge-based economy, and the importance of science for a stable and safe future.

Investment in research is not a luxury — it is a necessity for innovation, technological progress, and long-term security. 🌍🔬

🎓Students are our greatest asset and our future!🌟 Their creativity and dedication drive scientific progress, but to give them the chance to reach their potential, we must ensure that science is strongly and sustainably funded.

🎓The future is here!🌟 Two new PhD students joined us: 🏆Anton Hul—graduate of @ETH_en🇨🇭 🏆Andrzej Tyc —graduate of @Cambridge_Uni🇬🇧 They will work on ultracold molecules for quantum technologies and probing physics beyond the Standard Model funded by @FNP_org_pl @ERC_Research

Our outstanding BSc and MSc students Dawid Dąbrowski @dkdabrowski and Kacper Cybiński @KacperCybinski defended their excellent theses on He2 dimer and double dipolar molecules, supervised by Prof. @MichalTomza and co-supervised by Dr @Gronowski_M and mgr @misuchorowski.

Our new research article on "Interactions and Cold Collisions of AlF in the Ground and Excited Electronic States with He" was just published in @JPhysChem A by our excellent PhD student Sangami Ganesan Santhi and postdocs Matthew Frye and Marcin Gronowski pubs.acs.org/doi/10.1021/ac…

Prof. @MichalTomza with postdoc Dr Matthew Frye, PhD students Michał Suchorowski @misuchorowski and Jacek Gębala @Jac_Geb_3 participate in the 11th Quantum Optics Conference organized at @JagiellonskiUni.