Outofequilibrium cesium atoms reveal fractional Fermi seas, exposing new critical quantum phase

Jun 18, 2026

In a new study published in Physical Review Letters, a team from the Nägerl group, together with theory collaborator Alvise Bastianello from the CNRS and the Université Paris-Dauphine, demonstrates that highly unusual quantum states known as "fractional Fermi seas" can be quantum engineered.