Since its foundation in 1953, the International School of Physics Enrico Fermi has hosted a number of Schools which have recognized the importance of lasers, both as a spectroscopy instrument and, more recently, as the essential tool for the production and manipulation of ultracold atomic matter.
This book contains the lectures presented as Course 211 of the prestigious International School of Physics Enrico Fermi, Quantum Mixtures with Ultra-cold Atoms, held in held in Varenna, Italy from 16 to 23 July 2022. At this event, a number of eminent international speakers addressed different types of quantum mixtures, providing theoretical or experimental approaches for studying these powerful and promising platforms. The lectures provided a broad overview of the physics of atomic mixtures from the few-body regime, with the study of Feshbach resonances and the impurity problem, to the many-body regime, with the observation of new types of solitons and vortices and the realization of superfluid ferromagnetic systems. Several bosonic and fermionic mixtures showing complementary features were studied in different configurations, in harmonic, flat or lattice potentials, or in the presence of coherent coupling. Different kinds of interactions were explored, from short-range forces treatable within mean-field and beyond-mean-field schemes in spin mixtures, to long-range in dipolar gases and in hybrid systems made of charged ions immersed in a neutral gas.
Given the recent proliferation of experiments involving different kinds of atoms in various configurations that has significantly increased the richness of the system and the physics that can be explored, this book will be of interest to all those working in the field.
