Xin-Yu Luo "Creation of ultracold tetratomic molecules from a Fermi gas of microwave-shielded [...]"

Invited talk by Xin-Yu Luo (Max-Planck-Institute for Quantum Optics, Germany):
"Creation of ultracold tetratomic molecules from a Fermi gas of microwave-shielded polar molecules"

This talk was a part of Workshop on Ultracold Molecules 2023, that took place in Warsaw, Poland on 05-08.09.2023.
For more details please refer to workshop website: https://ultracold-molecules-2023.fuw....
For information on future events visit our website: https://camop.uw.edu.pl

Abstract:
Stable molecular Fermi gases with strong dipolar interactions provide unique opportunities for studying exotic quantum matter such as p-wave superfluidity and extended Fermi-Hubbard models. I will first show our endeavors in understanding and controlling collisions of ultracold molecules, which eventually allow us to stabilize the molecular gas by microwave shielding. This technique enables the evaporation of polar molecules to temperatures well below the Fermi temperature [1]. The intermolecular potential can be flexibly tuned by the microwave field, allowing us to observe field-linked resonances in collisions of polar molecules. It provides a universal tuning knob to independently control the dipolar interaction and contact interaction [2]. In the end, I will present the creation of ultracold field-linked tetratomic molecules by electroassociation in a degenerate Fermi gas of microwave-shielded polar molecules [3]. Additionally, I will discuss several exciting new possibilities associated with these field-linked molecules.

References:
[1] A. Schindewolf et al., Evaporation of microwave-shielded polar molecules to quantum degeneracy, Nature 607, 677 (2022)
[2] X.-Y. Chen* and A. Schindewolf* et al., Field-linked resonances of polar molecules, Nature 614, 59 (2023)
[3] X.-Y. Chen et al., Ultracold field-linked tetratomic molecules, arXiv preprint arXiv:2306.00962 (2023)