90 citations · 402 across the 33 of their papers we have counts for
33 papers
Exploring Variational Entanglement Hamiltonians
Yanick S. Kind, Benedikt Fauseweh
Recent advances in analog and digital quantum-simulation platforms have enabled exploration of the spectrum of entanglement Hamiltonians via variational algorithms. In this work we…
Probabilistic imaginary-time evolution in state-vector-based and shot-based simulations and on quantum devices
Satoshi Ejima, Kazuhiro Seki, Benedikt Fauseweh +1
Imaginary-time evolution, an important technique in tensor network and quantum Monte Carlo algorithms on classical computers, has recently been adapted to quantum computing. In thi…
Critical Scaling of the Quantum Wasserstein Distance
Gonzalo Camacho, Benedikt Fauseweh
Distinguishing quantum states with minimal sampling overhead is of fundamental importance to teach quantum data to an algorithm. Recently, the quantum Wasserstein distance emerged…
Flat-Band Driven Kondo Breakdown and Reentrant Effects in Heavy-Fermion Moiré Superlattices
Fabian Eickhoff, Jian-Xin Zhu, Benedikt Fauseweh
Moiré superlattices (MSLs) in van der Waals (vdW) heterostructures have demonstrated their incredible power in driving emergent electronic phenomena, some of which are reminiscent…
Laser-driven Ultrafast Dynamics of a Fractional Quantum Hall System
Ammar Kirmani, Benedikt Fauseweh, Jian-Xin Zhu
Fractional quantum Hall (FQH) systems are strongly interacting electron systems with topological order. These systems are characterized by novel ground states, fractionally charged…
Entanglement-informed Construction of Variational Quantum Circuits
Alina Joch, Götz S. Uhrig, Benedikt Fauseweh
The Variational Quantum Eigensolver (VQE) is a promising tool for simulating ground states of quantum many-body systems on noisy quantum computers. Its effectiveness relies heavily…
Observing a discrete time crystal on a trapped-ion qudit quantum processor
Gonzalo Camacho, Claire L. Edmunds, Michael Meth +2
Time crystals have been observed in various qubit-based quantum platforms. However, the realization of time-crystal behavior beyond period doubling has remained fairly unexplored,…
Low-energy spin excitations in field-induced phases of the spin-ladder antiferromagnet BiCuPO
Patrick Pilch, Kirill Amelin, Gary Schmiedinghoff +13
We report on terahertz spectroscopic measurements of quantum spin dynamics on single crystals of a spin-1/2 frustrated spin-ladder antiferromagnet BiCuPO as a function of t…
Radiative Higgs mode in photoinduced pairs
Satoshi Ejima, Benedikt Fauseweh
We demonstrate that the symmetry of the pump-induced -pairing state in the Hubbard chain can be transiently broken by an additionally applied probe pulse. This leads to char…
Noise-Robust Detection of Quantum Phase Transitions
Kevin Lively, Tim Bode, Jochen Szangolies +2
Quantum computing allows for the manipulation of highly correlated states whose properties quickly go beyond the capacity of any classical method to calculate. Thus one natural pro…
Prolonging a discrete time crystal by quantum-classical feedback
Gonzalo Camacho, Benedikt Fauseweh
Nonequilibrium phases of quantum matter featuring time crystalline eigenstate order have been realized recently on noisy intermediate-scale quantum (NISQ) devices. While ideal quan…
Dark Matter Detection with Strongly Correlated Topological Materials: Flatband Effect
Zhao Huang, Christopher Lane, Sarah E. Grefe +5
Dirac materials have been proposed as a new class of electron-based detectors for light dark-matter (DM) scattering or absorption, with predicted sensitivities far exceeding superc…
Quantum computing Floquet energy spectra
Benedikt Fauseweh, Jian-Xin Zhu
Quantum systems can be dynamically controlled using time-periodic external fields, leading to the concept of Floquet engineering, with promising technological applications. Computi…
Ultrafast Optical Control of Magnetic Order and Fermi Surface Topology at a Quantum Critical Point
Benedikt Fauseweh, Jian-Xin Zhu
Designing material properties on demand has important implications to potential future technological applications. While theoretically it is always possible to tune various intrins…
Three-body bound states in antiferromagnetic spin ladders
Gary Schmiedinghoff, Leanna Müller, Umesh Kumar +2
Stable bound quantum states are ubiquitous in nature. Mostly, they result from the interaction of only pairs of particles, so called two-body interactions, even when large complex…
Dynamical properties of a driven dissipative dimerized chain
M. Yarmohammadi, C. Meyer, B. Fauseweh +2
We consider the dynamical properties of a gapped quantum spin system coupled to the electric field of a laser, which drives the resonant excitation of specific phonon modes that mo…
Digital Quantum Simulation of Non-Equilibrium Quantum Many-Body Systems
Benedikt Fauseweh, Jian-Xin Zhu
Digital quantum simulation uses the capabilities of quantum computers to determine the dynamics of quantum systems, which are beyond the computability of modern classical computers…
Laser pulse driven control of charge and spin order in the two-dimensional Kondo lattice
Benedikt Fauseweh, Jian-Xin Zhu
Fast and dynamical control of quantum phases is highly desired in the application of quantum phenomena in devices. On the experimental side, ultrafast laser pulses provide an ideal…
Momentum-resolved analysis of condensate dynamic and Higgs oscillations in quenched superconductors with tr-ARPES
Lukas Schwarz, Benedikt Fauseweh, Dirk Manske
Higgs oscillations in nonequilibrium superconductors provide an unique tool to obtain information about the underlying order parameter. Several properties like the absolute value,…
Detecting superconductivity out-of-equilibrium
Sebastian Paeckel, Benedikt Fauseweh, Alexander Osterkorn +3
Recent pump-probe experiments on underdoped cuprates and similar systems suggest the existence of a transient superconducting state above . This poses the question ho…
Ultrafast Laser Driven Many-Body Dynamics and Kondo Coherence Collapse
W. Zhu, Benedikt Fauseweh, Alexis Chacon +1
Ultrafast laser pulse has provided a systematic way to inspect the dynamics of electrons in condensed matter systems. In this paper, by means of time-dependent density matrix renor…
Nuclear frequency focusing in periodically pulsed semiconductor quantum dots described by infinite classical central spin models
Philipp Schering, Jan Hüdepohl, Götz S. Uhrig +1
The coherence of an electronic spin in a semiconductor quantum dot decays due to its interaction with the bath of nuclear spins in the surrounding isotopes. This effect can be redu…
Classification and characterization of nonequilibrium Higgs modes in unconventional superconductors
L. Schwarz, B. Fauseweh, N. Tsuji +8
Recent findings of new Higgs modes in unconventional superconductors require a classification and characterization of the modes allowed by nontrivial gap symmetry. Here we develop…
Quantum mechanical treatment of large spin baths
Robin Röhrig, Philipp Schering, Lars B. Gravert +2
The electronic spin in quantum dots can be described by central spin models (CSMs) with a very large number to of bath spins posing a tremendou…