Annuaire

Ultracold Lanthanide Atoms

I study ultracold lanthanide atoms, such as dysprosium and erbium, whose large magnetic dipole moments and complex electronic structure give rise to strong dipolar interactions and highly anisotropic van der Waals interactions.

My current postdoctoral research focuses on modeling the influence of external magnetic fields on the formation of weakly bound molecular states through Fano–Feshbach resonances. This work requires a detailed understanding of interparticle interactions over a wide range of distances, from short-range molecular physics to long-range dipolar interactions, as well as their coupling to external fields. Such studies contribute to the control and manipulation of strongly interacting quantum gases.

Ultracold Diatomic Molecules

My research focuses on ultracold diatomic molecules, in particular bialkali molecules prepared in their absolute ground state, (their electronic, vibrational, rotational, and hyperfine ground state). At temperatures of a few hundred nanokelvin, these molecules exhibit strong dipolar interactions that can be precisely controlled using external fields.

During my PhD, I investigated optical control of molecular collisions through Raman coupling. By driving laser-induced Raman transitions between molecular states, it is possible to modify the intermolecular interaction potential and transform attractive interactions into repulsive ones. This “collisional shielding” mechanism aims to suppress losses and provides a powerful tool for controlling the dynamics and stability of ultracold molecular gases.