A Wigner chain in a periodic potential is a paradigmatic example of geometric frustration
with long-range interactions. The dynamics emulates the Frenkel-Kontorova model with …

Dissipative quantum systems can under appropriate conditions exhibit bi-or multipartite
entanglement at the steady state. The presence and properties of these quantum …

The thermodynamics of low-dimensional systems departs significantly from
phenomenologically deducted macroscopic laws. Particular examples, not yet fully …

Geometric frustration in systems with long-range interactions is a largely unexplored
phenomenon. In this work we analyse the ground state emerging from the competition …

We investigate the normal-mode spectrum of a trapped ion chain at the symmetry-breaking
linear to zigzag transition and at finite temperatures. For this purpose, we modulate the …

Light-induced control of ions within small Coulomb crystals is investigated. By intense
intracavity optical standing-wave fields, subwavelength localization of individual ions is …

Trapped ion systems constitute a well controllable scenario for the study and emulation of
nanofriction, and in particular of Frenkel-Kontorova-like models. This is in particular the case …

Trapped ions in a periodic potential are a paradigm of a frustrated Wigner crystal. The
dynamics are captured by a long-range Frenkel-Kontorova model. We show that the …

There is a growing interest in high-precision spectroscopy and frequency metrology for
fundamental studies using sympathetically cooled highly charged ions (HCIs) embedded in …

A 1D model of interacting particles moving over a periodic substrate and in a position
dependent temperature profile is considered. When the substrate and the temperature …