Journal articles

This is a list of all journal articles. For other publication types, see all publications.

2021

Gauge-Symmetry Protection Using Single-Body Terms

Quantum-simulator hardware promises new insights into problems from particle and nuclear physics. A major challenge is to reproduce …

Unconventional critical exponents at dynamical quantum phase transitions in a random Ising chain

Dynamical quantum phase transitions (DQPTs) feature singular temporal behavior in transient quantum states during nonequilibrium …

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 …

Exciting the Goldstone Modes of a Supersolid Spin–Orbit-Coupled Bose Gas

Supersolidity is deeply connected with the emergence of Goldstone modes, reflecting the spontaneous breaking of both phase and …

From entanglement certification with quench dynamics to multipartite entanglement of interacting fermions

Multipartite entanglement, such as witnessed through the quantum Fisher information (QFI), is a crucial resource for quantum …

Local measures of dynamical quantum phase transitions

In recent years, dynamical quantum phase transitions (DQPTs) have emerged as a useful theoretical concept to characterize …

Analog cosmological reheating in an ultracold Bose gas

Cosmological reheating describes the transition of the post-inflationary universe to a hot and thermal state. In order to shed light on …

Quantum aging and dynamical universality in the long-range $O(N\to\infty)$ model

Quantum quenches to or near criticality give rise to the phenomenon of aging, manifested by glassy-like dynamics at short times and far …

Dominant Reaction Pathways by Quantum Computing

Characterizing thermally activated transitions in high-dimensional rugged energy surfaces is a very challenging task for classical …

2020

Observation of gauge invariance in a 71-site quantum simulator

The modern description of elementary particles is built on gauge theories. Such theories implement fundamental laws of physics by local …

Robustness of gauge-invariant dynamics against defects in ultracold-atom gauge theories

Recent years have seen strong progress in quantum simulation of gauge-theory dynamics using ultracold-atom experiments. A principal …

Reliability of lattice gauge theories

Currently, there are intense experimental efforts to realize lattice gauge theories in quantum simulators. Except for specific models, …

Hybrid infinite time-evolving block decimation algorithm for long-range multi-dimensional quantum many-body systems

In recent years, the infinite time-evolution block decimation (iTEBD) method has been demonstrated to be one of the most efficient and …

Out-of-equilibrium phase diagram of long-range superconductors

Within the ultimate goal of classifying universality in quantum many-body dynamics, understanding the relation between …

Perspectives of quantum annealing: Methods and implementations

Quantum annealing is a computing paradigm that has the ambitious goal of efficiently solving large-scale combinatorial optimization …

A scalable realization of local U(1) gauge invariance in cold atomic mixtures

In the fundamental laws of physics, gauge fields mediate the interaction between charged particles. An example is quantum …

2019

Quantum localization bounds Trotter errors in digital quantum simulation

A fundamental challenge in digital quantum simulation (DQS) is the control of an inherent error, which appears when discretizing the …

2018

Relating Out-of-Time-Order Correlations to Entanglement via Multiple-Quantum Coherences

Out-of-time-order correlations (OTOCs) characterize the scrambling, or delocalization, of quantum information over all the degrees of …

2016

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 …

Many-body localization in a quantum simulator with programmable random disorder

When a system thermalizes it loses all memory of its initialconditions. Even within a closed quantum system, subsystemsusually …

Measuring multipartite entanglement through dynamic susceptibilities

Entanglement is considered an essential resource in quantum technologies, and central to the understanding of quantum many-body …

2015

A quantum annealing architecture with all-to-all connectivity from local interactions

Quantum annealers are physical devices that aim at solving NP-complete optimization problems by exploiting quantum mechanics. The basic …

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 …

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 …

2014

Tomography of Band Insulators from Quench Dynamics

We propose a simple scheme for tomography of band-insulating states in one- and two-dimensional optical lattices with two sublattice …

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. …

2012

Can one trust quantum simulators?

Various fundamental phenomena of strongly correlated quantum systems such as high-$T_c$ superconductivity, the fractional quantum-Hall …