Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Efficient Simulation of the 2D Hubbard Model via Hilbert Space-Filling Curve Mapping
Ashkan Abedi, Vittorio Giovannetti, Dario De Santis·Dec 2, 2025
We investigate tensor network simulations of the two-dimensional Hubbard model by mapping the lattice onto a one-dimensional chain using space-filling curves. In particular, we focus on the Hilbert curve, whose locality-preserving structure minimizes...
Improved Ising Meson Spectroscopy Simulation on a Noisy Digital Quantum Device
Hao-Ti Hung, Isabel Nha Minh Le, Johannes Knolle +1 more·Dec 2, 2025
The transverse-field Ising model serves as a paradigm for studying confinement and excitation spectra, particularly the emergence of $E_8$ symmetry near criticality. However, experimentally resolving the Ising meson spectroscopy required to verify th...
Estimating Local Observables via Cluster-Level Light-Cone Decomposition
Junxiang Huang, Yunxin Tang, Xiao Yuan·Dec 2, 2025
Simulating large quantum circuits on hardware with limited qubit counts is often attempted through methods like circuit knitting, which typically incur sample costs that grow exponentially with the number of connections cut. In this work, we introduc...
Efficient Quantum Simulation of Non-Adiabatic Molecular Dynamics with Precise Electronic Structure
Tianyi Li, Yumeng Zeng, Qiming Ding +6 more·Dec 2, 2025
In the study of non-adiabatic chemical processes such as photocatalysis and photosynthesis, non-adiabatic molecular dynamics (NAMD) is an indispensable theoretical tool, which requires precise potential energy surfaces (PESs) of ground and excited st...
Quantum Advantage in Resource Estimation
William A. Simon, Peter J. Love·Dec 1, 2025
Quantum computing promises the ability to compute properties of quantum systems exponentially faster than classical computers. Quantum advantage is achieved when a practical problem is solved more efficiently on a quantum computer than on a classical...
Network theory classification of quantum matter based on wave function snapshots
Riccardo Andreoni, Vittorio Vitale, Cristiano Muzzi +3 more·Dec 1, 2025
Quantum computers and simulators offer unparalleled capabilities of probing quantum many-body states, by obtaining snapshots of the many-body wave function via collective projective measurements. The probability distribution obtained by such snapshot...
Observation of an anomaly in the statistics of Kibble-Zurek defects
Jan Balewski, Alexey Khudorozhkov, Siva Darbha +8 more·Dec 1, 2025
The Kibble-Zurek mechanism quantifies defect formation during adiabatic passage across a continuous phase transition, providing key insights into universality in quantum many-body systems. We explore counting statistics of defects in adiabatic passag...
On-chip high-order parametric downconversion in the excitonic Mott insulator Nb$_3$Cl$_8$ for programmable multiphoton entangled states
Dmitry Skachkov, Dirk R. Englund, Michael N. Leuenberger·Dec 1, 2025
Spontaneous parametric downconversion (SPDC) and four-wave mixing in $χ^{(2)}$ and $χ^{(3)}$ media underpin most entangled-photon sources, but direct generation of higher-order entangled multiphoton states by $n$-th order parametric downconversion re...
Approximate pushforward designs and image bounds on approximations
Jakub Czartowski, Adam Sawicki, Karol Życzkowski·Dec 1, 2025
We extend the framework of quantum pushforward designs to the approximate setting, where averaging is achieved only up to finite precision. Using Schatten $p$-norms and Lipschitz continuity arguments, we derive bounds on the approximation parameters ...
Benchmarking Distributed Quantum Computing Emulators
Guillermo Díaz-Camacho, Iago F. Llovo, F. Javier Cardama +7 more·Dec 1, 2025
Scalable quantum computing requires architectural solutions beyond monolithic processors. Distributed quantum computing (DQC) addresses this challenge by interconnecting smaller quantum nodes through quantum communication protocols, enabling collabor...
Hybrid Quantum State Preparation via Data Compression
Emad Rezaei Fard Boosari, Maryam Afsary·Dec 1, 2025
Quantum state preparation (QSP) for a general $n$-qubit state requires $O(2^n)$ CNOT gates and circuit depth, making exact amplitude encoding (EAE) impractical for near-term quantum hardware. We introduce an ancilla-free hybrid classical-quantum stra...
Efficient Time Evolution of 2D Open-Quantum Lattice Models with Long-Range Interactions using Tensor Networks
Jack Dunham, Marzena H. Szymańska·Dec 1, 2025
Simulating many-body open quantum systems is an extremely challenging problem, with methods often restricted to either models with nearest-neighbor interactions or semi-classical approximations. In particular, modeling two-dimensional systems with re...
Antibunching in locally driven dissipative Lieb lattices
Alex Ferrier, Michał Matuszewski, Piotr Deuar +1 more·Dec 1, 2025
In Lieb lattices, geometric frustration and destructive interference of hopping cancels the occupation of certain sites, leading to flat-band physics. Here, we show numerically how, in the driven-dissipative Bose-Hubbard (DDBH) model arranged into Li...
A Three-Dimensional Array of Quantum Dots
Hanifa Tidjani, Dario Denora, Michael Chan +6 more·Dec 1, 2025
Quantum dots can confine single electrons or holes to define spin qubits that can be operated with high fidelity. Experimental work has progressed from linear to two-dimensional arrays of quantum dots, enabling qubit interactions that are essential f...
Resource Estimation for VQE on Small Molecules: Impact of Fermion Mappings and Hamiltonian Reductions
Anurag K. S. V., Ashish Kumar Patra, Vikas Dattatraya Ghevade +5 more·Dec 1, 2025
Accurate determination of ground-state energies for molecules remains a challenge in quantum chemistry and a cornerstone for progress in fields such as drug discovery and materials design. The Variational Quantum Eigensolver (VQE) represents a leadin...
From Device to Dynamics: An Iterative Architectural Framework for High-Performance Single-Photon Detection at Room Temperature
Hao Shu·Dec 1, 2025
Photon detection is a cornerstone of quantum technology, traditionally regarded as a static device-level operation constrained by the intrinsic physical properties of single-photon detectors (SPDs). Consequently, high-performance detection has been h...
Passive Polarization Stabilization for Practical and Robust Entanglement Distribution
Jin-Woo Kim, Minchul Kim, Jiho Park +1 more·Dec 1, 2025
Quantum entanglement is a key resource in quantum information science, playing an essential role in quantum key distribution (QKD), quantum networks, and distributed quantum computing. However, practical applications require techniques capable of rel...
Scoring-based Static Variable Ordering for Decision Diagram-based Quantum Circuit Simulation
Yusuke Kimura, Masahiro Fujita, Robert Wille·Dec 1, 2025
Decision diagram (DD)-based quantum circuit simulators represent quantum states and gates using DDs, enabling memory-efficient and fast simulations for some quantum circuits like Shor. Although it is known that DD size and processing time vary depend...
QAISim: a toolkit for modeling and simulation of AI in quantum cloud computing environments
Irwindeep Singh, S. Gill, Jinzhao Sun +1 more·Dec 1, 2025
Quantum computing offers new ways to explore the theory of computation via the laws of quantum mechanics. Due to the rising demand for quantum computing resources, there is growing interest in developing cloud-based quantum resource sharing platforms...
Quantum magnetic imaging of current density in lithium-ion batteries
W. Evans, T. Coussens, M. T. M. Woodley +7 more·Nov 30, 2025
The projected rapid growth of battery cell production over the next decade demands advanced diagnostic tools for quality control, ageing prediction, and recycling. Most existing techniques lack the spatial and temporal resolution required to capture ...