Trapped ions

Dynamical phase transitions in quantum spin models with antiferromagnetic long-range interactions

In recent years, dynamical phase transitions and out-of-equilibrium criticality have been at the forefront of ultracold gases and condensed matter research. Whereas universality and scaling are established topics in equilibrium quantum many-body …

Real-time dynamics of lattice gauge theories with a few-qubit quantum computer

Gauge theories are fundamental to our understanding of interactions between the elementary constituents of matter as mediated by gauge bosons1,2. However, computing the real-time dynamics in gauge theories is a notorious challenge for classical …

Spectroscopy of Interacting Quasiparticles in Trapped Ions

The static and dynamic properties of many-body quantum systems are often well described by collective excitations, known as quasiparticles. Engineered quantum systems offer the opportunity to study such emergent phenomena in a precisely controlled …

Probing entanglement in adiabatic quantum optimization with trapped ions

Adiabatic quantum optimization has been proposed as a route to solve NP-complete problems, with a possible quantum speedup compared to classical algorithms. However, the precise role of quantum effects, such as entanglement, in these optimization …

Quasiparticle engineering and entanglement propagation in a quantum many-body system

The key to explaining and controlling a range of quantum phenom-ena is to study how information propagates around many-body sys-tems. Quantum dynamics can be described by particle-like carriers ofinformation that emerge in the collective behaviour of …