Tarik Yefsah's group at LKB studies strongly interacting ultracold Fermi gases. Research: (1) Fermi gas mixtures — quantum simulation of condensed matter phenomena (BCS-BEC crossover, Fermi polaron); (2) quantum gas microscope experiments imaging individual atoms in optical lattices; (3) novel quantum phases in Fermi-Hubbard systems ('fermionic waltz' publication 2026). Relevant to quantum simulation and quantum gas-based sensing.

Yzombard works on laser-cooling techniques for exotic ions and antimatter precursors as part of the GBAR (Gravitational Behaviour of Antihydrogen at Rest) collaboration, aiming to measure the free-fall acceleration of antihydrogen as a fundamental test of the equivalence principle.