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Live trends in quantum computing research, updated daily from arXiv.
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Quantum computation of hadron scattering in a lattice gauge theory
Z. Davoudi, Chung-Chun Hsieh, Saurabh V. Kadam·May 26, 2025
We present a digital quantum computation of two-hadron scattering in a $Z_2$ lattice gauge theory in 1+1 dimensions. We prepare well-separated single-particle wave packets with desired momentum-space wavefunctions, and simulate their collision throug...
Techniques for Quantum-Computing-Aided Algorithmic Composition: Experiments in Rhythm, Timbre, Harmony, and Space
Christopher Dobrian, Omar Costa Hamido·May 26, 2025
Quantum computing can be employed in computer-aided music composition to control various attributes of the music at different structural levels. This article describes the application of quantum simulation to model compositional decision making, the ...
QMIO: A tightly integrated hybrid HPCQC system
Javier Cacheiro, Álvaro C. Sánchez, Russell Rundle +4 more·May 25, 2025
High-Performance Computing (HPC) systems are the most powerful tools that we currently have to solve complex scientific simulations. Quantum computing (QC) has the potential to enhance HPC systems by accelerating the execution of specific kernels tha...
Quantum simulation of elastic wave equations via Schr\"odingerisation
Shi Jin, Chun Zhang·May 24, 2025
In this paper we study quantum simulation algorithms on the elastic wave equations using the Schr\"odingerisation method. The Schr\"odingerisation method transforms any linear PDEs into a system of Schr\"odinger-type PDEs -with unitary evolution-usin...
Hierarchical Quantum Error Correction with Hypergraph Product Code and Rotated Surface Code
Junichi Haruna, Keisuke Fujii·May 24, 2025
We propose and analyze a hierarchical quantum error correction (QEC) scheme that concatenates hypergraph product (HGP) codes with rotated surface codes, which is compatible with quantum computers with only nearest-neighbor interactions. The outer c...
The Lie Algebra of XY-mixer Topologies and Warm Starting QAOA for Constrained Optimization
Steven Kordonowy, Hannes Leipold·May 23, 2025
The XY-mixer has widespread utilization in modern quantum computing, including in variational quantum algorithms, such as Quantum Alternating Operator Ansatz (QAOA). The XY ansatz is particularly useful for solving Cardinality Constrained Optimizatio...
Neural Network Assisted Fermionic Compression Encoding: A Lossy-QSCI Framework for Resource-Efficient Ground-State Simulations
Yu-Cheng Chen, Ronin Wu, M. H. Cheng +1 more·May 23, 2025
Quantum computing promises to revolutionize many-body simulations for quantum chemistry, but its potential is constrained by limited qubits and noise in current devices. In this work, we introduce the Lossy Quantum Selected Configuration Interaction ...
A Variational Quantum Eigensolver Based on the Measurement Scheme Tailored to Multiband Tight-Binding Simulations
Dongkeun Lee, Hoon Ryu·May 23, 2025
We propose a cost-efficient measurement scheme of the variational quantum eigensolver (VQE) for atomistic simulations of electronic structures based on a tight-binding (TB) theory. Leveraging the lattice geometry of a material domain, the sparse TB H...
Anyonic Excitations in Warped and Curved AdS Backgrounds
Tzu-Miao Chou·May 23, 2025
This work studies anyonic excitations in warped and curved AdS$_3$ backgrounds via Chern-Simons theory. By incorporating geometric deformations such as conical defects, it is shown that curvature modifies the fusion and braiding properties through co...
Circuit structure-preserving error mitigation for High-Fidelity Quantum Simulations
Ruizhe Shen, Tianqi Chen, Ching Hua Lee·May 22, 2025
Developing methods to accurately characterize and mitigate the impact of noise is crucial for enhancing the fidelity of quantum simulations on Noisy Intermediate-Scale Quantum (NISQ) devices. In this work, we present a circuit structure-preserving er...
Variational Quantum Algorithm for Solving the Liouvillian Gap
Xu-Dan 旭丹 Xie 谢, Zheng-Yuan 正远 Xue 薛, Dan-Bo 旦波 Zhang 张·May 22, 2025
In open quantum systems, the Liouvillian gap characterizes the relaxation time toward the steady state. However, accurately computing this quantity is notoriously difficult due to the exponential growth of the Hilbert space and the non-Hermitian natu...
Quantum Multi-view Kernel Learning with Local Information
Jing Li, Yanqi Song, Su-Lu Qin +1 more·May 22, 2025
Kernel methods serve as powerful tools to capture nonlinear patterns behind data in machine learning. The quantum kernel, integrating kernel theory with quantum computing, has attracted widespread attention. However, existing studies encounter perfor...
Simulating Time Dependent and Nonlinear Classical Oscillators through Nonlinear Schr\"odingerization
Abhinav Muraleedharan, Nathan Wiebe·May 22, 2025
We present quantum algorithms for simulating the dynamics of a broad class of classical oscillator systems containing $2^n$ coupled oscillators (Eg: $2^n$ masses coupled by springs), including those with time-dependent forces, time-varying stiffness ...
Scaling Quantum Simulation-Based Optimization: Demonstrating Efficient Power Grid Management with Deep QAOA Circuits
Maximilian Adler, Jonas Stein, Michael Lachner·May 22, 2025
Quantum Simulation-based Optimization (QuSO) is a recently proposed class of optimization problems that entails industrially relevant problems characterized by cost functions or constraints that depend on summary statistic information about the simul...
Dissipative phase transition of interacting non-reciprocal fermions
Rafael D. Soares, Matteo Brunelli, Marco Schirò·May 21, 2025
While non-reciprocal couplings are ubiquitous in classical systems, their impact on quantum many-body criticality and entanglement remains largely unexplored. Using exact numerical simulations, we study an interacting fermionic chain subject to non-r...
Transformer-Based Neural Quantum Digital Twins for Many-Body Quantum Simulation and Optimal Annealing Schedule Design
Jianlong Lu, Hanqiu Peng, Ying Chen·May 21, 2025
We introduce Transformer-based Neural Quantum Digital Twins (Tx-NQDTs) to simulate full adiabatic dynamics of many-body quantum systems, including ground and low-lying excited states, at low computational cost. Tx-NQDTs employ a graph-informed Transf...
Hyperscaling of Fidelity and Operator Estimations in the Critical Manifold
Matheus H. Martins Costa, Flavio S. Nogueira, Jeroen van den Brink·May 21, 2025
By formulating the renormalization group as a quantum channel acting on density matrices in Quantum Field Theories (QFTs), we show that ground-state expectation values of observables supported on slow momentum modes can be approximated by their avera...
Prethermalization, shadowing breakdown, and the absence of Trotterization transition in quantum circuits
Marko Znidaric·May 21, 2025
One of the premier utilities of present day noisy quantum computers is simulation of many-body quantum systems. We study how long in time is such a discrete-time simulation representative of a continuous time Hamiltonian evolution, namely, a finite t...
Noisy simulations of Quantum Walk and Quantum Walk search via Quantum Cellular Automata on a semiconducting spin processor emulator
Andrea Mammola, Quentin Schaeverbeke, Giuseppe Di Molfetta·May 20, 2025
In this work we map NISQ-friendly implementations of the non-interacting QCA to a circuit Quantum Electrodynamics (cQED) hardware. We perform both noiseless and noisy simulations of the QCA one particle sector, namely the Quantum Walk, on $N$-cycles ...
State-Based Quantum Simulation: Releasing the Powers of Quantum States and Copies
S. Alipour, A. Rezakhani, Alireza Tavanfar +2 more·May 20, 2025
Quantum computing employs controllable interactions to perform sequences of logical gates and entire algorithms on quantum registers. This paradigm has been widely explored, e.g., for simulating dynamics of manybody systems by decomposing their Hamil...