925 citations · 9.1k across the 90 of their papers we have counts for
15 papers · 1 filter
Dynamical quantum phase transitions in collapse and revival oscillations of a quenched superfluid
Mateusz Lacki, Markus Heyl
In this work we revisit collapse and revival oscillations in superfluids suddenly quenched by strong local interactions for the case of a one-dimensional Bose-Hubbard model. As the…
The Kibble-Zurek mechanism at exceptional points
Balázs Dóra, Markus Heyl, Roderich Moessner
Exceptional points (EPs) are ubiquitous in non-hermitian systems, and represent the complex counterpart of critical points. By driving a system through a critical point at finite r…
Digital Quantum Simulation, Trotter Errors, and Quantum Chaos of the Kicked Top
Lukas M. Sieberer, Tobias Olsacher, Andreas Elben +4
This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular,…
Describing many-body localized systems in thermal environments
Ling-Na Wu, Alexander Schnell, Giuseppe De Tomasi +2
In this work we formulate an efficient method for the description of many-body localized systems in weak contact with thermal environments at temperature . For this purpose we e…
Dynamical quantum phase transitions: a brief survey
Markus Heyl
Nonequilibrium states of closed quantum many-body systems defy a thermodynamic description. As a consequence, constraints such as the principle of equal a priori probabilities in t…
Solving efficiently the dynamics of many-body localized systems at strong disorder
Giuseppe De Tomasi, Frank Pollmann, Markus Heyl
We introduce a method to efficiently study the dynamical properties of many-body localized systems in the regime of strong disorder and weak interactions. Our method reproduces qua…
Quantifying and controlling prethermal nonergodicity in interacting Floquet matter
Kevin Singh, Cora J. Fujiwara, Zachary A. Geiger +10
The use of periodic driving for synthesizing many-body quantum states depends crucially on the existence of a prethermal regime, which exhibits drive-tunable properties while fores…
Dynamical quantum phase transitions in quantum link models
Yi-Ping Huang, Debasish Banerjee, Markus Heyl
Quantum link models are extensions of Wilson-type lattice gauge theories which realize exact gauge invariance with finite-dimensional Hilbert spaces. Quantum link models not only r…
Measuring a Dynamical Topological Order Parameter in Quantum Walks
Xiao-Ye Xu, Qin-Qin Wang, Markus Heyl +9
Quantum processes of inherent dynamical nature, such as quantum walks (QWs), defy a description in terms of an equilibrium statistical physics ensemble. Up to now, it has remained…
Accessing eigenstate spin-glass order from reduced density matrices
Younes Javanmard, Soumya Bera, Markus Heyl
Many-body localized phases may not only be characterized by their ergodicity breaking, but can also host ordered phases such as the many-body localized spin-glass (MBL-SG). The MBL…
Quantum localization bounds Trotter errors in digital quantum simulation
Markus Heyl, Philipp Hauke, Peter Zoller
A fundamental challenge in digital quantum simulation (DQS) is the control of inherent errors. These appear when discretizing the time evolution generated by the Hamiltonian of a q…
Measuring the single-particle density matrix for fermions and hard-core bosons in an optical lattice
Luis A. Peña Ardila, Markus Heyl, André Eckardt
Ultracold atoms in optical lattices provide clean, tunable, and well-isolated realizations of paradigmatic quantum lattice models. With the recent advent of quantum-gas microscopes…
Sharp entanglement thresholds in the logarithmic negativity of disjoint blocks in the transverse-field Ising chain
Younes Javanmard, Daniele Trapin, Soumya Bera +2
Entanglement has developed into an essential concept for the characterization of phases and phase transitions in ground states of quantum many-body systems. In this work, we use th…
Constructing effective free energies for dynamical quantum phase transitions in the transverse-field Ising chain
Daniele Trapin, Markus Heyl
The theory of dynamical quantum phase transitions represents an attempt to extend the concept of phase transitions to the far from equilibrium regime. While there are many formal a…
Detecting equilibrium and dynamical quantum phase transitions in Ising chains via out-of-time-ordered correlators
Markus Heyl, Frank Pollmann, Balázs Dóra
Out-of-time-ordered (OTO) correlators have developed into a central concept quantifying quantum information transport, information scrambling and quantum chaos. In this work we sho…