Multicomponent spin mixtures of two-electron fermions

Abstract

These lecture notes contain an introduction to the physics of quantum mixtures of ultracold atoms trapped in multiple internal states. I will discuss the case of fermionic isotopes of alkaline-earth atoms, which feature an intrinsic SU($N$) interaction symmetry and convenient methods for the optical manipulation of their nuclear spin. Some research directions will be presented, with focus on experiments performed in Florence with nuclear-spin mixtures of $^{173}$Yb atoms in optical lattices.Comment: 33 pages, 13 figures, Lecture notes for the Proceedings of the International School of Physics "Enrico Fermi" Course 211 "Quantum Mixtures with Ultra-Cold Atoms" (Varenna, Italy, 2022