Papers
Live trends in quantum computing research, updated daily from arXiv.
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General linear correction method for DFT+X energy: application to U-M (M=Al, Ga, In) alloys under high pressure
X. L. Pan, H. X. Song, Y. Sun +6 more·Feb 28, 2026
DFT+X methods, such as DFT+U and DFT+DMFT, are important supplements to standard density functional theory when strong on-site Coulomb interactions are present. However, the involvement of external parameters in the underlying model Hamiltonian intro...
Instantons In A Symmetric Quartic Potential: Multi-Flavor Instanton Species and $D_4$ Symmetry Melting
Pervez Hoodbhoy, M. Haashir Ismail, M. Mufassir·Feb 28, 2026
We extend the semi-classical analysis of the double-well potential to a quartic system featuring four degenerate minima. Utilizing the Feynman path integral in imaginary time, we identify longitudinal, transverse, and diagonal instanton configuration...
Closing the Loop: Resource-aware Hybrid NAS Guided by Analytical and Hardware-Calibrated Quantum Cost Modeling
Muhammad Kashif, Alberto Marchisio, Muhammad Shafique·Feb 28, 2026
Hybrid quantum-classical neural networks (HQNNs) integrate quantum circuits with classical layers, each operating under fundamentally different computational paradigms, which makes hardware resource estimation challenging. The training of quantum cir...
A Stable and General Quantum Fractional-Step Lattice Boltzmann Method for Incompressible Flows
Yang Xiao, Liming Yang, Chang Shu +1 more·Feb 28, 2026
Quantum computing shows substantial potential in accelerating simulations and alleviating memory bottlenecks in computational fluid dynamics (CFD), owing to its inherent properties of superposition and entanglement. The lattice Boltzmann method (LBM)...
On Best-Possible One-Time Programs
Aparna Gupte, Jiahui Liu, Luowen Qian +3 more·Feb 28, 2026
One-time programs (OTPs) aim to let a user evaluate a program on a single input while revealing nothing else. Classical OTPs require hardware assumptions, and even with quantum information, OTPs for deterministic functionalities remain impossible due...
Generalized Bopp shift, Darboux Canonicalization, and the Kinematical Inequivalence of NCQM and QM
S. Hasibul Hassan Chowdhury·Feb 28, 2026
Two-dimensional noncommutative quantum mechanics (NCQM) is often formulated through linear transformations of represented position and momentum operators and through Darboux-type canonicalizations. We clarify the representation-theoretic meaning of s...
Quantum AS-DeepOnet: Quantum Attentive Stacked DeepONet for Solving 2D Evolution Equations
Hongquan Wang, Hanshu Chen, Ilia Marchevsky +1 more·Feb 28, 2026
DeepONet enables retraining-free inference across varying initial conditions or source terms at the cost of high computational requirements. This paper proposes a hybrid quantum operator network (Quantum AS-DeepOnet) suitable for solving 2D evolution...
Efficient Polynomial-Scaled Determination of Algebraic Entanglement Entropy Between Collective Degrees of Freedom
John Drew Wilson, Jarrod T. Reilly, Murray J. Holland·Feb 28, 2026
In this work, we explore physical systems which support not only multipartite interparticle entanglement, but also intraparticle entanglement between different degrees of freedom of the constituent particles and entanglement between different degrees...
Nonclassical Many-Body Superradiant States with Interparticle and Spin-Momentum Entanglement
Jarrod T. Reilly, Gage W. Harmon, John Drew Wilson +2 more·Feb 28, 2026
We present a cross-cavity system in which steady-state superradiance is achieved using solely collective dissipative dynamics. Two cavities symmetrically couple an ensemble of four-level atoms by driving transitions between two electronic states and ...
Optimizing CMOS-compatible, superconducting Titanium Nitride Resonators: Deposition Conditions and Structuring Processes
Simon J. K. Lang, Alexandra Schewski, Ignaz Eisele +10 more·Feb 28, 2026
We report on the fabrication and characterization of superconducting coplanar waveguide (CPW) resonators based on titanium nitride (TiN) thin films deposited on 200\,mm diameter high-resistivity Si(100) substrates. We systematically investigate how d...
Physics-Aware Learnability: From Set-Theoretic Independence to Operational Constraints
Jeongho Bang, Kyoungho Cho·Feb 28, 2026
Beyond binary classification, learnability can become a logically fragile notion: in EMX, even the class of all finite subsets of $[0,1]$ is learnable in some models of ZFC and not in others. We argue the paradox is operational. The standard definiti...
Exact and Asymptotically Complete Robust Verifications of Neural Networks via Quantum Optimization
Wenxin Li, Wenchao Liu, Chuan Wang +4 more·Feb 28, 2026
Deep neural networks (DNNs) enable high performance across domains but remain vulnerable to adversarial perturbations, limiting their use in safety-critical settings. Here, we introduce two quantum-optimization-based models for robust verification th...
Axiomatic Foundation of Quantum-Inspired Distance Metrics
Maryam Bagherian·Feb 28, 2026
We develop a comprehensive axiomatic framework for quantum-inspired distance metrics on projective Hilbert spaces, providing a unified foundation that organizes and generalizes existing measures in quantum information theory. Starting from five funda...
Genuine certifiable randomness from a black-box
Liam P. McGuinness·Feb 28, 2026
Randomness is intrinsic to quantum mechanics; the outcome of a measurement on a quantum state is a random variable. This feature has been applied to randomness certification, where one party must decide whether the data they receive is truly random. ...
Low-entropy arrays of microwave-shielded molecules prepared by interaction blockade
Tijs Karman, Sebastian Will, Zoe Yan·Feb 28, 2026
Ultracold molecules are becoming an increasingly important technology for quantum simulation, computation, and sensing, but their state preparation in large, low-entropy arrays remains a key challenge. We propose to deterministically load single mole...
A Quantum Algorithm for the Diffusion Step of Grid-based Filter
Yeong-Geol Choe, C. Park, Jindvrich Dun'ik +3 more·Feb 28, 2026
We propose a simple quantum algorithm for implementing the diffusion step of grid-based Bayesian filters. The method encodes the advected state density and the process noise density into quantum registers and realizes diffusion using a quantum Fourie...
Characterization of Inner Control Electrode Shapes for Multi-Layer Surface-Electrode Ion Traps
Florian Ungerechts, Brigitte Kaune, Christian Ospelkaus·Feb 27, 2026
Microfabricated surface-electrode traps are a scalable platform for trapped-ion quantum processors. Recent advances in fabrication techniques have enabled the design of increasingly complex multi-layer structures. Yet the control electrodes remain mo...
Topology as a Design Variable for Multiproperty Engineering in Synthesized 4-5-6-8 Carbon Nanoribbons
Djardiel da S. Gomes, Isaac M. Felix, Lucas L. Lage +3 more·Feb 27, 2026
Nonbenzenoid carbon frameworks expand low-dimensional material design via controlled asymmetry. Here, we show the experimentally realized 4-5-6-8 carbon nanoribbon establishes a topology-driven paradigm for multiproperty engineering, not just a graph...
The Birth of Quantum Mechanics and the Dirac Equation
Volodimir Simulik, Denys I. Bondar·Feb 27, 2026
The year 2025 marked the centennial of quantum mechanics, inaugurated by Heisenberg's matrix formulation and the foundational contributions of Pauli, Schrodinger, and Dirac. Concurrently, 2026 marks the centennial of the Klein - Gordon equation, the ...
Rayleigh-Ritz Variational Method in The Complex Plane
M. W. AlMasri·Feb 27, 2026
We present a systematic study of the Rayleigh--Ritz variational method for quantum oscillators in the Segal--Bargmann space. We rigorously derive the normalizability condition $|α| < \tfrac{1}{2}$ for generalized Gaussian trial functions $ψ(z) = e^{α...