211 citations · 482 across the 14 of their papers we have counts for
19 papers
Bias Analysis and Regularization of Sequential Minimal Optimization in Variational Quantum Eigensolvers
Samuele Pedrielli, Frederik Stalschus, Stefan Kühn +3
The Nakanishi Fujii Todo (NFT) algorithm, also known as Rotosolve, implements Sequential Minimal Optimization for Variational Quantum Eigensolvers (SMO-VQE) by exploiting the trigo…
Computing quantum entanglement with machine learning
Andrea Bulgarelli, Elia Cellini, Karl Jansen +5
Entanglement calculations in quantum field theories are extremely challenging and typically rely on the replica trick, where the problem is rephrased in a study of defects. We demo…
Fermion Discretization Effects in the Two-Flavor Lattice Schwinger Model: A Study with Matrix Product States
Tim Schwägerl, Karl Jansen, Stefan Kühn
We present a comprehensive tensor network study of staggered, Wilson, and twisted mass fermions in the Hamiltonian formulation, using the massive two-flavor Schwinger model as a be…
Gaussian boson sampling for binary optimization
Jean Cazalis, Tirth Shah, Yahui Chai +2
Binary optimization is a fundamental area in computational science, with wide-ranging applications from logistics to cryptography, where the tasks are often formulated as Quadratic…
Small-scale Hamiltonian optimization of interpolating operators for Lagrangian lattice quantum field theory
Artur Avkhadiev, Lena Funcke, Karl Jansen +2
Lattice quantum field theory calculations may potentially combine the advantages of Hamiltonian formulations with the scalability and control of conventional Lagrangian frameworks.…
Hybrid Oscillator-Qubit Quantum Processors: Simulating Fermions, Bosons, and Gauge Fields
Eleanor Crane, Kevin C. Smith, Teague Tomesh +9
We develop a hybrid oscillator-qubit processor framework for quantum simulation of strongly correlated fermions and bosons that avoids the boson-to-qubit mapping overhead encounter…
Concurrent VQE for Simulating Excited States of the Schwinger Model
Yibin Guo, Takis Angelides, Karl Jansen +1
This work explores the application of the concurrent variational quantum eigensolver (cVQE) for computing excited states of the Schwinger model. By designing suitable ansatz circui…
Towards determining the (2+1)-dimensional Quantum Electrodynamics running coupling with Monte Carlo and quantum computing methods
Arianna Crippa, Simone Romiti, Lena Funcke +4
In this paper, we examine a compact lattice gauge theory in dimensions and present a strategy for studying the running coupling and extracting the non-perturbative $…
Simulating the flight gate assignment problem on a trapped ion quantum computer
Yahui Chai, Evgeny Epifanovsky, Karl Jansen +2
We study the flight gate assignment problem on IonQ's Aria trapped ion quantum computer using the variational quantum eigensolver. Utilizing the conditional value at risk as an agg…
Quantum Computing for High-Energy Physics: State of the Art and Challenges. Summary of the QC4HEP Working Group
Alberto Di Meglio, Karl Jansen, Ivano Tavernelli +43
Quantum computers offer an intriguing path for a paradigmatic change of computing in the natural sciences and beyond, with the potential for achieving a so-called quantum advantage…
Particle track reconstruction with noisy intermediate-scale quantum computers
Tim Schwägerl, Cigdem Issever, Karl Jansen +4
The reconstruction of trajectories of charged particles is a key computational challenge for current and future collider experiments. Considering the rapid progress in quantum comp…
Exploring the phase structure of the multi-flavor Schwinger model with quantum computing
Lena Funcke, Tobias Hartung, Karl Jansen +4
We propose a variational quantum eigensolver suitable for exploring the phase structure of the multi-flavor Schwinger model in the presence of a chemical potential. The parametric…
Track reconstruction at the LUXE experiment using quantum algorithms
Arianna Crippa, Lena Funcke, Tobias Hartung +8
LUXE (Laser Und XFEL Experiment) is a proposed experiment at DESY which will study Quantum Electrodynamics (QED) in the strong-field regime, where QED becomes non-perturbative. Mea…
Classical Splitting of Parametrized Quantum Circuits
Cenk Tüysüz, Giuseppe Clemente, Arianna Crippa +3
Barren plateaus appear to be a major obstacle to using variational quantum algorithms to simulate large-scale quantum systems or replace traditional machine learning algorithms. Th…
Towards Quantum Simulations in Particle Physics and Beyond on Noisy Intermediate-Scale Quantum Devices
Lena Funcke, Tobias Hartung, Karl Jansen +4
We review two algorithmic advances that bring us closer to reliable quantum simulations of model systems in high energy physics and beyond on noisy intermediate-scale quantum (NISQ…
Phase structure of the CP(1) model in the presence of a topological -term
Katsumasa Nakayama, Lena Funcke, Karl Jansen +2
We numerically study the phase structure of the CP(1) model in the presence of a topological -term, a regime afflicted by the sign problem for conventional lattice Monte Carlo s…
O(3) nonlinear sigma model in 1+1 dimensions with matrix product states
Falk Bruckmann, Karl Jansen, Stefan Kühn
We numerically study the spectral properties, the entanglement and the zero-temperature phase structure at nonvanishing chemical potential of the O(3) nonlinear sigma model. Using…
Towards overcoming the Monte Carlo sign problem with tensor networks
Mari Carmen Bañuls, Krzysztof Cichy, J. Ignacio Cirac +3
The study of lattice gauge theories with Monte Carlo simulations is hindered by the infamous sign problem that appears under certain circumstances, in particular at non-zero chemic…
Quantum simulation of the Schwinger model: A study of feasibility
Stefan Kühn, J. Ignacio Cirac, Mari-Carmen Bañuls
We analyze some crucial questions regarding the practical feasibility of quantum simulation for lattice gauge models. Our analysis focuses on two models suitable for the quantum si…