This review gives a pedagogical introduction to the eigenstate thermalization hypothesis
(ETH), its basis, and its implications to statistical mechanics and thermodynamics. In the first …

Recent theoretical and experimental progress on studying one-dimensional systems of
bosonic, fermionic, and Bose–Fermi mixtures of a few ultracold atoms confined in traps is …

Knowing when a physical system has reached sufficient size for its macroscopic properties
to be well described by many-body theory is difficult. We investigated the crossover from few …

Coherent tripartite interactions among degrees of freedom of completely different nature are
instrumental for quantum information and simulation technologies, but they are generally …

We report on the first realization of heteronuclear dipolar quantum mixtures of highly
magnetic erbium and dysprosium atoms. With a versatile experimental setup, we …

Few-body physics has played a prominent role in atomic, molecular and nuclear physics
since the early days of quantum mechanics. It is now possible—thanks to tremendous …

We report on controlled doping of an ultracold Rb gas with single neutral Cs impurity atoms.
Elastic two-body collisions lead to a rapid thermalization of the impurity inside the Rb gas …

We investigate the behavior of a two-level atom coupled to a one-dimensional, ultracold
Fermi gas. The sudden switching on of the scattering between the two entities leads to the …

We study quantum information flow in a model comprised of a trapped impurity qubit
immersed in a Bose-Einstein-condensed reservoir. We demonstrate how information flux …

In contrast to classical empty space, the quantum vacuum fundamentally alters the
properties of embedded particles. This paradigm shift allows one to explain the discovery of …