A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …

The study of open quantum systems–microscopic systems exhibiting quantum coherence
that are coupled to their environment–has become increasingly important in the past years …

We study theoretically how local measurements performed on critical quantum ground states
affect long-distance correlations. These states are highly entangled and feature algebraic …

We realize a quantum-gas microscope for fermionic K 40 atoms trapped in an optical lattice,
which allows one to probe strongly correlated fermions at the single-atom level. We combine …

Single-atom-resolved detection in optical lattices using quantum-gas microscopes, has
enabled a new generation of experiments in the field of quantum simulation. Although such …

We demonstrate site-resolved imaging of individual fermionic Li 6 atoms in a single layer of
a 3D optical lattice. To preserve the density distribution during fluorescence imaging, we …

The relaxation of isolated quantum many-body systems is a major unsolved problem
connecting statistical and quantum physics. Studying such relaxation processes remains a …

The Pauli exclusion principle is one of the most fundamental manifestations of quantum
statistics. Here, we report on its local observation in a spin-polarized degenerate gas of …

We demonstrate fluorescence microscopy of individual fermionic potassium atoms in a 527-
nm-period optical lattice. Using electromagnetically induced transparency cooling on the …

The process of measurement can modify the state of a quantum system and its subsequent
evolution. Here, we demonstrate the control of quantum tunneling in an ultracold lattice gas …