The theoretical understanding of scaling laws of entropies and mutual information has led to
substantial advances in the study of correlated states of matter, quantum field theory and …

We investigate signal propagation in a quantum field simulator of the Klein–Gordon model
realized by two strongly coupled parallel one-dimensional quasi-condensates. By …

Schemes of classical shadows have been developed to facilitate the readout of digital
quantum devices, but similar tools for analog quantum simulators are scarce and …

Recent years have enjoyed an overwhelming interest in quantum thermodynamics, a field of
research aimed at understanding thermodynamic tasks performed in the quantum regime …

Conventional hydrodynamics describes systems with few long-lived excitations. In one
dimension, however, many experimentally relevant systems feature a large number of long …

Optical lattices have been used as a versatile toolbox to control Bose-Einstein condensates
(BECs) in recent years, and a wealth of emergent nonlinear phenomena have been found …

Quantum field theories (QFTs) as relevant for condensed-matter or high-energy physics are
formulated in continuous space and time, and typically emerge as effective low-energy …

We present a series of experiments performed with two ultracold one-dimensional Bose
gases (rubidium atoms) in a double well potential. Employing matter-wave interference, we …

Abstract Tomonaga–Luttinger liquids (TLLs) can be used to effectively describe one-
dimensional quantum many-body systems such as ultracold atoms, charges in nanowires …

Solutions to many-body problem instances often involve an intractable number of degrees of
freedom and admit no known approximations in general form. In practice, representing …