This is a list of all journal articles. For other publication types, see all publications.
2024
Protein Design by Integrating Machine Learning and Quantum-Encoded Optimization
The protein design problem involves finding polypeptide sequences folding into a given three-dimensional structure. Its rigorous …
Unraveling the emergence of quantum state designs in systems with symmetry
Quantum state designs, by enabling an efficient sampling of random quantum states, play a quintessential role in devising and …
G-structures for black hole near-horizon geometries
We derive necessary and sufficient conditions for warped AdS2 solutions of Type II supergravity to preserve $\mathcal{N}=1$ …
Beyond braid statistics: Constructing a lattice model for anyons with exchange statistics intrinsic to one dimension
Anyons obeying fractional exchange statistics arise naturally in two dimensions: Hard-core two-body constraints make the configuration …
Thouless pumping in Josephson junction arrays
Recent advancements in fabrication techniques have enabled unprecedented clean interfaces and gate tunability in …
Simulations of the dynamics of quantum impurity problems with matrix product states
The Anderson impurity model is a paradigmatic example in the study of strongly correlated quantum systems and describes an interacting …
Variational quantum simulation of U(1) lattice gauge theories with qudit systems
Lattice gauge theories are fundamental to various fields, including particle physics, condensed matter, and quantum information theory. …
Quantum Computation of Thermal Averages for a Non-Abelian D4 Lattice Gauge Theory via Quantum Metropolis Sampling
In this paper, we show the application of the Quantum Metropolis Sampling (QMS) algorithm to a toy gauge theory with discrete …
Squeezing and quantum approximate optimization
Variational quantum algorithms offer fascinating prospects for the solution of combinatorial optimization problems using digital …
2023
Topological Kondo model out of equilibrium
The topological Kondo effect is a genuine manifestation of the nonlocality of Majorana modes. We investigate its out-of-equilibrium …
Many-body magic via Pauli–Markov chains — from criticality to gauge theories
We introduce a method to measure many-body magic in quantum systems based on a statistical exploration of Pauli strings via Markov …
Matrix models and holography: Mass deformations of long quiver theories in 5d and 3d
We enlarge the dictionary between matrix models for long linear quivers preserving eight supercharges in $d=5$ and $d=3$ and type IIB …
Eichtheorien im Quantensimulator
Gauge theories form the theoretical foundation of our understanding of many fields of science, in particular elementary particle …
The holographic map of an evaporating black hole
We construct a holographic map that takes the semi-classical state of an evaporating black hole and its Hawking radiation to a …
Quantum approximate optimization algorithm for qudit systems
A frequent starting point of quantum computation platforms is the two-state quantum system, i.e., the qubit. However, in the context of …
Universal equilibration dynamics of the Sachdev-Ye-Kitaev model
Equilibrium quantum many-body systems in the vicinity of phase transitions generically manifest universality. In contrast, limited …
Robust quantum many-body scars in lattice gauge theories
Quantum many-body scarring is a paradigm of weak ergodicity breaking arising due to the presence of special nonthermal many-body …
Massive flows in AdS$_6$/CFT$_5$
We study five-dimensional $N=1$ Superconformal Field Theories of the linear quiver type. These are deformed by a relevant operator, …
Engineering random spin models with atoms in a high-finesse cavity
All-to-all interacting, disordered quantum many-body models have a wide range of applications across disciplines, from spin glasses in …
Quantum routing of information using chiral quantum walks
We address routing of classical and quantum information over quantum network and show how to exploit chirality (directionality) to …
Dynamics of Stripe Patterns in Supersolid Spin–Orbit-Coupled Bose Gases
Despite ground-breaking observations of supersolidity in spin–orbit-coupled Bose–Einstein condensates, until now the …
Critical slowing down in sudden quench dynamics
We reveal a prethermal dynamical regime upon suddenly quenching to the vicinity of a quantum phase transition in the time evolution of …
Detecting quantum phase transitions in the quasistationary regime of Ising chains
Recently, single-site observables have been shown to be useful for probing critical slowing down in sudden quench dynamics
Dağ et al., …
Absence of operator growth for average equal-time observables in charge-conserved sectors of the Sachdev-Ye-Kitaev model
Quantum scrambling plays an important role in understanding thermalization in closed quantum systems. By this effect, quantum …
Reliability of lattice gauge theories in the thermodynamic limit
Although gauge invariance is a postulate in fundamental theories of nature such as quantum electrodynamics, in quantum-simulation …
2022
Achieving the quantum field theory limit in far-from-equilibrium quantum link models
Realizations of gauge theories in setups of quantum synthetic matter open up the possibility of probing salient exotic phenomena in …
Dynamical quantum phase transitions in spin-$S$ $U(1)$ quantum link models
Dynamical quantum phase transitions (DQPTs) are a powerful concept of probing far-from-equilibrium criticality in quantum many-body …
Genuine multipartite entanglement in a one-dimensional Bose-Hubbard model with frustrated hopping
Frustration and quantum entanglement are two exotic quantum properties in quantum many-body systems. However, despite several efforts, …
Disorder-free localization with Stark gauge protection
Disorder-free localization in translation-invariant gauge theories presents a counterintuitive yet powerful framework of ergodicity …
Tuning the Topological $\theta$-Angle in Cold-Atom Quantum Simulators of Gauge Theories
The topological $\theta$-angle in gauge theories engenders a series of fundamental phenomena, including violations of charge-parity …
Towards the continuum limit of a $(1+1)$d quantum link Schwinger model
The solution of gauge theories is one of the most promising applications of quantum technologies. Here, we discuss the approach to the …
Quantum phases of dipolar bosons in multilayer optical lattice
We consider a minimal model to investigate the quantum phases of hardcore, polarized dipolar atoms confined in multilayer optical …
Entanglement Witnessing for Lattice Gauge Theories
Entanglement is assuming a central role in modern quantum many-body physics. Yet, for lattice gauge theories its certification remains …
Ground-state phase diagram of quantum link electrodynamics in $(2+1)$-d
The exploration of phase diagrams of strongly interacting gauge theories coupled to matter in lower dimensions promises the …
Stabilizing lattice gauge theories through simplified local pseudo generators
The postulate of gauge invariance in nature does not lend itself directly to implementations of lattice gauge theories in modern setups …
From non-Hermitian linear response to dynamical correlations and fluctuation–dissipation relations in quantum many-body systems
Quantum many-body systems are characterized by their correlations. While equal-time correlators and unequal-time commutators between …
Thermalization dynamics of a gauge theory on a quantum simulator
Gauge theories form the foundation of modern physics, with applications ranging from elementary particle physics and early-universe …
Enhancing disorder-free localization through dynamically emergent local symmetries
Disorder-free localization is a recently discovered phenomenon of nonergodicity that can emerge in quantum many-body systems hosting …
Projective symmetry group classification of chiral $\mathbb{Z}_2$ spin liquids on the pyrochlore lattice: application to the spin-$1/2$ XXZ Heisenberg model
We give a complete classification of fully symmetric as well as chiral $\mathbb{Z}_2$ quantum spin liquids on the pyrochlore lattice …
Gauge protection in non-Abelian lattice gauge theories
Protection of gauge invariance in experimental realizations of lattice gauge theories based on energy-penalty schemes has recently …
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 …
Polymer Physics by Quantum Computing
Sampling equilibrium ensembles of dense polymer mixtures is a paradigmatically hard problem in computational physics, even in …
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 …