Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,980
This Month
1,396
Today
0
Research Volume
13,219 papers in 12 months (+3% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Simulating Fully Gauge-Fixed SU(2) Hamiltonian Dynamics on Digital Quantum Computers
Henry Froland, Dorota M. Grabowska, Zhiyao Li·Dec 28, 2025
Quantum simulations of many-body systems offer novel methods for probing the dynamics of the Standard Model and its constituent gauge theories. Extracting low-energy predictions from such simulations rely on formulating systematically-improvable repr...
An asymmetric and fast Rydberg gate protocol for long range entanglement
Daniel C. Cole, Vikas Buchemmavari, Mark Saffman·Dec 28, 2025
We analyze a new Rydberg gate design based on the original $π-2π-π$ protocol [Jaksch, et. al. Phys. Rev. Lett. {\bf 85}, 2208 (2000)] that is modified to enable high fidelity operation without requiring a strong Rydberg interaction. The gate retains ...
A method for robust spin relaxometry in the presence of imperfect state preparation
Ella P. Walsh, Sepehr Ahmadi, Alexander J. Healey +2 more·Dec 28, 2025
Spin relaxometry based on quantum spin systems has developed as a valuable tool in medical and condensed matter systems, offering the advantage of operating without the need for external DC or RF fields. Spin relaxometry with nitrogen-vacancy (NV) ce...
Variational quantum algorithm for solving Helmholtz problems with high order finite elements
Arnaud Rémi, François Damanet, Christophe Geuzaine·Dec 27, 2025
Discretizing Helmholtz problems via finite elements yields linear systems whose efficient solution remains a major challenge for classical computation. In this paper, we investigate how variational quantum algorithms could address this challenge. We ...
Affine Symmetry and the Group-Theoretic Basis of the Unruh Effect
Michele Arzano, Alessandra D'Alise, Simone del Rosso +1 more·Dec 27, 2025
A massless scalar field in two spacetime dimensions splits into two independent sectors of left and right-moving modes on the light cone. At the quantum level, these two sectors carry a representation of the group of affine transformations of the rea...
Measuring out-of-time-order correlators on a quantum computer based on an irreversibility-susceptibility method
Haruki Emori, Hiroyasu Tajima·Dec 27, 2025
The out-of-time-ordered correlator (OTOC) is a powerful tool for probing quantum information scrambling, a fundamental process by which local information spreads irreversibly throughout a quantum many-body system. Experimentally measuring the OTOC, h...
Nonadiabatic Self-Healing of Trotter Errors in Digitized Counterdiabatic Dynamics
Mara Vizzuso, Gianluca Passarelli, Giovanni Cantele +3 more·Dec 27, 2025
Trotter errors in digitized quantum dynamics arise from approximating time-ordered evolution under noncommuting Hamiltonian terms with a product formula. In the adiabatic regime, such errors are known to exhibit long-time self-healing [Phys. Rev. Let...
1d-qt-ideal-solver: 1D Idealized Quantum Tunneling Solver with Absorbing Boundaries
Sandy H. S. Herho, Siti N. Kaban, Rusmawan Suwarman +2 more·Dec 27, 2025
We present 1d-qt-ideal-solver, an open-source Python library for simulating one-dimensional quantum tunneling dynamics under idealized coherent conditions. The solver implements the split-operator method with second-order Trotter-Suzuki factorization...
Asymmetry effects in homodyne and heterodyne measurements: Positive operator-valued measures and asymptotic security of Gaussian continuous variable quantum key distribution
A. S. Naumchik, Roman K. Goncharov, Alexei D. Kiselev·Dec 27, 2025
We use the Gaussian approximation describing photocount statistics for both the homodyne and the double homodyne (heterodyne) measurements to study asymmetry effects arising from imbalance of the beam splitters and variations in quantum efficiencies ...
Variational quantum eigensolver for chemical molecules
Luca Ion, Adam Smith·Dec 27, 2025
Solving interacting multi-particle systems is a central challenge in quantum chemistry and condensed matter physics. In this work, we investigate the computation of ground states and ground-state energies for the He-H+ and H2O molecules using quantum...
Fast collisional $\sqrt{\mathrm{SWAP}}$ gate for fermionic atoms in an optical superlattice
Rafi Weill, Jonathan Nemirovsky, Yoav Sagi·Dec 27, 2025
Collisional gates in optical superlattices have recently achieved record fidelities, but their operation times are typically limited by tunneling. Here we propose and analyze an alternative route to a fast $\sqrt{\mathrm{SWAP}}$ gate for two fermioni...
Modeling Noise in Quantum Computing of Scalar Convection
Jiahua Yang, Zhen Lu, Yue Yang·Dec 27, 2025
Quantum computing holds potential for accelerating the simulation of fluid dynamics. However, hardware noise in the noisy intermediate-scale quantum era significantly distorts simulation accuracy. Although error magnitudes are frequently quantified, ...
Experimental Joint Estimation of Phase and Phase Diffusion via Deterministic Bell Measurements
Ben Wang, Minghao Mi, Huangqiuchen Wang +2 more·Dec 27, 2025
Accurate phase estimation plays a pivotal role in quantum metrology, yet its precision is significantly affected by noise, particularly phase-diffusive noise caused by phase drift. To address this challenge, the joint estimation of phase and phase di...
Quantum preferential attachment
Tingyu Zhao, Balázs Maga, Pierfrancesco Dionigi +6 more·Dec 27, 2025
The quantum internet is a rapidly developing technological reality, yet, it remains unclear what kind of quantum network structures might emerge. Since indirect quantum communication is already feasible and preserves absolute security of the communic...
Entanglement protection induced by mixed noise
Tengtao Guo, Yuxuan Zhou, Jiahui Feng +2 more·Dec 27, 2025
Contrary to the conventional view that noise is detrimental, we show that mixed noise can protect entanglement in a two-atom-cavity system. Specifically, the leakage of the cavity and the stochastic atom-cavity couplings are modeled as two types of n...
Determinism and Indeterminism as Model Artefacts: Toward a Model-Invariant Ontology of Physics
David Nolland·Dec 27, 2025
This paper argues that the traditional opposition between determinism and indeterminism in physics is representational rather than ontological. Deterministic-stochastic dualities are available in principle, and arise in a non-contrived way in many sc...
Operational entanglement of collective quantum modes at room temperature
Shalender Singh, Santosh Kumar·Dec 27, 2025
Quantum entanglement is commonly assumed to be fragile at ambient temperature and over macroscopic distances, where thermal noise and dissipation are expected to rapidly suppress nonclassical correlations. Here we show that this intuition fails for c...
Quantum Noise Spectroscopy of Nanoscale Charge Defects in Silicon Carbide at Room Temperature
Jinpeng Liu, Yuanhong Teng, Yu Chen +8 more·Dec 27, 2025
The nanoscale charge environment critically influences semiconductor physics and device performance. While conventional bulk characterization techniques provide volume-averaged defect properties, they lack the spatial resolution to resolve nanoscale ...
Enhanced separability criteria based on symmetric measurements
Yu Lu, Hao-Fan Wang, Meng Su +2 more·Dec 27, 2025
We present separability criteria based on local symmetric measurements. These experimental plausible criteria are shown to be more efficient in detecting entanglement than the current counterparts by detailed examples. Furthermore, we generalize the ...
Quasi-harmonic spectra from branched Hamiltonians
Aritra Ghosh, Bijan Bagchi, A. Ghose-Choudhury +2 more·Dec 27, 2025
We revisit the canonical quantization to assess the spectrum of the modified Emden equation $\ddot{x} + kx\dot{x} + ω^2 x + \frac{k^2}{9}x^3 = 0$, which is an isochronous case of the Liénard-Kukles equation. While its classical isochronicity and cano...