Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Oxygen-vacancy quantum spin defects in silicon carbide
Yu Chen, Qi Zhang, Mingzhe Liu +11 more·Apr 10, 2025
Optically addressable spin defects in wide-bandgap semiconductors are promising building blocks for quantum sensing and quantum networks. Establishing their atomic structure is essential for understanding functionality and enabling controlled enginee...
Parton Distribution Functions in the Schwinger model from Tensor Network States
Mari Carmen Bañuls, Krzysztof Cichy, C. -J. David Lin +1 more·Apr 10, 2025
Parton distribution functions (PDFs) describe the inner, non-perturbative structure of hadrons. Their computation involves matrix elements with a Wilson line along a direction on the light cone, posing significant challenges in Euclidean lattice calc...
Automating quantum feature map design via large language models
Kenya Sakka, Kosuke Mitarai, Keisuke Fujii·Apr 10, 2025
Quantum feature maps are a key component of quantum machine learning, encoding classical data into quantum states to exploit the expressive power of high-dimensional Hilbert spaces. Despite their theoretical promise, designing quantum feature maps th...
Ground State Energy of He molecule Using a Four-Qubit Photonic Processor with the Variational Quantum Eigensolver
Badie Ghavami, Forouzan Mirmasoudi·Apr 10, 2025
To understand the properties and interactions of materials, and determining the ground state energies is one of the important challenges in quantum chemistry, materials science, and quantum mechanics, where quantum computing can play an important rol...
Asymptotically tight security analysis of quantum key distribution based on universal source compression
Takaya Matsuura, Shin-ichi Yamano, Yui Kuramochi +2 more·Apr 10, 2025
Practical quantum key distribution (QKD) protocols require a finite-size security proof. The phase error correction (PEC) approach is one of the general strategies for security analyses that has successfully proved finite-size security for many proto...
Quantum error correction via multi-particle discrete-time quantum walk
Ryo Asaka, Ryusei Minamikawa·Apr 10, 2025
We propose a scheme of quantum error correction that employs a multi-particle quantum walk defined on nested squares, each hosting a single particle. In this model, each particle moves within its own distinct square through iterations of three discre...
Simulating quantum dynamics in two-dimensional lattices with tensor network influence functional belief propagation
Gunhee Park, J. Gray, Garnet Kin-Lic Chan·Apr 10, 2025
Describing nonequilibrium quantum dynamics remains a significant computational challenge due to the growth of spatial entanglement. The tensor network influence functional (TN-IF) approach mitigates this problem for computing the time evolution of lo...
Hybrid Reinforcement Learning-based Sustainable Multi-User Computation Offloading for Mobile Edge-Quantum Computing
Minrui Xu, D. Niyato, Jiawen Kang +4 more·Apr 10, 2025
Exploiting quantum computing at the mobile edge holds immense potential for facilitating large-scale network design, processing multimodal data, optimizing resource management, and enhancing network security. In this paper, we propose a pioneering pa...
QubitHammer: Remotely Inducing Qubit State Change on Superconducting Quantum Computers
Yizhuo Tan, Navnil Choudhury, Kanad Basu +1 more·Apr 10, 2025
To address the rapidly growing demand for cloud-based quantum computing, various researchers are proposing shifting from the existing single-tenant model to a multi-tenant model that expands resource utilization and improves accessibility. However, w...
No-Go Theorems for Universal Quantum State Purification via Classically Simulable Operations.
K. He, Chengkai Zhu, Hongshun Yao +3 more·Apr 10, 2025
Quantum state purification, a process that aims to recover a state closer to a system's principal eigenstate from multiple copies of an unknown noisy quantum state, is crucial for restoring noisy states to a more useful form in quantum information pr...
Efficient Formal Verification of Quantum Error Correcting Programs
Qifan Huang, Li Zhou, Wang Fang +2 more·Apr 10, 2025
Quantum error correction (QEC) is fundamental for suppressing noise in quantum hardware and enabling fault-tolerant quantum computation. In this paper, we propose an efficient verification framework for QEC programs. We define an assertion logic and ...
Variational quantum and neural quantum states algorithms for the linear complementarity problem
Saibal De, Oliver Knitter, Rohan Kodati +3 more·Apr 10, 2025
Variational quantum algorithms (VQAs) are promising hybrid quantum-classical methods designed to leverage the computational advantages of quantum computing while mitigating the limitations of current noisy intermediate-scale quantum (NISQ) hardware. ...
Learning to erase quantum states: thermodynamic implications of quantum learning theory
Haimeng Zhao, Yuzhen Zhang, John Preskill·Apr 9, 2025
The energy cost of erasing quantum states depends on our knowledge of the states. We show that learning algorithms can acquire such knowledge to erase many copies of an unknown state at the optimal energy cost. This is proved by showing that learning...
Thermodynamic compatibility, holographic property and wave-function representation of generalized weakly nonlocal self-gravitating non-relativistic fluids
Mátyás Szücs, Péter Ván·Apr 9, 2025
A thermodynamic analysis of weakly nonlocal non-relativistic fluids is presented under the assumption that an additional scalar field also contributes to the dynamics. The most general evolution of this field and the constitutive relations for the pr...
Advanced measurement techniques in quantum Monte Carlo: The permutation matrix representation approach
Nic Ezzell, Itay Hen·Apr 9, 2025
In a typical finite temperature quantum Monte Carlo (QMC) simulation, estimators for simple static observables such as specific heat and magnetization are known. With a great deal of system-specific manual labor, one can sometimes also derive more co...
Benchmarking weak randomness in Quantum and Natural Sources
Maciej Stankiewicz, Roberto Salazar, Mikołaj Czechlewski +7 more·Apr 9, 2025
Private randomness is a fundamental resource for cryptography, security proofs, and information processing. Quantum devices offer a unique advantage by amplifying weak randomness sources in regimes unattainable by classical means. A central theoretic...
Cross-Platform Benchmarking of Near-Term Quantum Optimisation Algorithms
Kieran McDowall, Theodoros Kapourniotis, Christopher Oliver +2 more·Apr 9, 2025
Quantum computers show potential for achieving computational advantage over classical computers, with many candidate applications in combinatorial optimisation. We present an application level benchmarking framework for near-term quantum optimisation...
Semi-classical geometric tensor in multiparameter quantum information
Satoya Imai, Jing Yang, Luca Pezzè·Apr 9, 2025
The discrepancy between quantum distinguishability in Hilbert space and classical distinguishability in probability space is expressed by the gap between the quantum and classical Fisher information matrices (QFIM and CFIM, respectively). This intrin...
Emergent metric from wavelet-transformed quantum field theory
Šimon Vedl, Daniel J. George, Fil Simovic +5 more·Apr 9, 2025
We introduce a method of reverse holography by which a bulk metric is shown to arise from locally computable multiscale correlations of a boundary quantum field theory (QFT). The metric is obtained from the Petz-Rényi mutual information defined with ...
Atomic Regional Superfluids in two-dimensional Moiré Time Crystals
Weijie Liang, Weiping Zhang, Keye Zhang·Apr 9, 2025
Moiré physics has transcended spatial dimensions, extending into synthetic domains and enabling novel quantum phenomena. We propose a theoretical model for a two-dimensional (2D) Moiré time crystal formed by ultracold atoms, induced by periodic pertu...