Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Autonomous Optical Alignment of Satellite-Based Entanglement Sources using Reinforcement Learning
Andrzej Gajewski, Robert Okuła, Marcin Pawłowski +1 more·Jan 23, 2026
Quantum entanglement distributed via satellites enable global-scale quantum communication. However, onboard sources are susceptible to misalignment due to dynamical orbital conditions. Here, we present two recalibration techniques for efficient gener...
Boundary critical phenomena in the quantum Ashkin-Teller model
Yifan Liu, Natalia Chepiga, Yoshiki Fukusumi +1 more·Jan 23, 2026
We investigate the boundary critical phenomena of the one-dimensional quantum Ashkin-Teller model using boundary conformal field theory and density matrix renormalization group (DMRG) simulations. Based on the $\mathbb{Z}_2$-orbifold of the $c=1$ com...
Harnessing Quantum Computing for Energy Materials: Opportunities and Challenges
Seongmin Kim, In-Saeng Suh, Travis S. Humble +3 more·Jan 23, 2026
Developing high-performance materials is critical for diverse energy applications to increase efficiency, improve sustainability and reduce costs. Classical computational methods have enabled important breakthroughs in energy materials development, b...
Z2 Lattice Gauge Theory on Non-trivial Topology and Its Quantum Simulation
Jiaqi Hu, Shu Tian, Xiaopeng Cui +3 more·Jan 23, 2026
Wegner duality is essential for Z2 lattice gauge theory, yet the duality on non-trivial topologies has remained implicit. We extend Wegner duality to arbitrary topology and dimension, obtaining a new class of Ising models, in which topology is encode...
Noise Resilience and Robust Convergence Guarantees for the Variational Quantum Eigensolver
Mirko Legnini, Julian Berberich·Jan 23, 2026
Variational Quantum Algorithms (VQAs) are a class of hybrid quantum-classical algorithms that leverage on classical optimization tools to find the optimal parameters for a parameterized quantum circuit. One relevant application of VQAs is the Variati...
Moderate-terahertz-induced plateau expansion of high-order harmonic generation to soft X-ray region
Doan-An Trieu, Duong D. Hoang-Trong, Cam-Tu Le +5 more·Jan 23, 2026
Extending the high-harmonic cutoff with experimentally accessible fields is essential for advancing tabletop coherent extreme ultraviolet (EUV) and soft X-ray sources. Although terahertz (THz) assistance offers a promising route, cutoff extension at ...
Integrated Photonic Quantum Computing: From Silicon to Lithium Niobate
Hui Zhang, Yiming Ma, Yuancheng Zhan +6 more·Jan 23, 2026
Quantum technologies have surpassed classical systems by leveraging the unique properties of superposition and entanglement in photons and matter. Recent advancements in integrated quantum photonics, especially in silicon-based and lithium niobate pl...
Quantum phase estimation with optimal confidence interval using three control qubits
Kaur Kristjuhan, Dominic W. Berry·Jan 23, 2026
Quantum phase estimation is an important routine in many quantum algorithms, particularly for estimating the ground state energy in quantum chemistry simulations. This estimation involves applying powers of a unitary to the ground state, controlled b...
Quantum Sensing MRI for Noninvasive Detection of Neuronal Electrical Activity in Human Brains
Yongxian Qian, Ying-Chia Lin, Seyedehsara Hejazi +12 more·Jan 23, 2026
Neuronal electrical activity underlies human cognition including perception, attention, memory, language, and decision-making. Yet its direct, noninvasive measurement in the living human brain remains a fundamental challenge. Existing neuroimaging te...
Subspace-Confined QAOA with Generalized Dicke States for Multi-Channel Allocation in 5G CBRS Networks
Gunsik Min, Youngjin Seo, Jun Heo·Jan 23, 2026
Efficient spectrum sharing in the Citizens Broadband Radio Service (CBRS) band is essential for maximizing 5G network capacity, particularly when high-traffic base stations require simultaneous access to multiple channels. Standard formulations of th...
Bichromatic Tweezers for Qudit Quantum Computing in ${}^{87}$Sr
Enrique A. Segura Carrillo, Eric J. Meier, Michael J. Martin·Jan 22, 2026
Neutral atoms have become a competitive platform for quantum metrology, simulation, sensing, and computing. Current magic trapping techniques are insufficient to engineer magic trapping conditions for qudits encoded in hyperfine states with $J \neq 0...
String Breaking and Glueball Dynamics in $2+1$D Quantum Link Electrodynamics
Jiahao Cao, Rohan Joshi, Yizhuo Tian +2 more·Jan 22, 2026
At the heart of quark confinement and hadronization, the physics of flux strings has recently become a focal point in the field of quantum simulation of high-energy physics (HEP). Despite considerable progress, a detailed understanding of the behavio...
Fair sampling with temperature-targeted QAOA based on quantum-classical correspondence theory
Tetsuro Abe, Shu Tanaka·Jan 22, 2026
In combinatorial optimization problems with degenerate ground states, fair sampling of degenerate solutions is essential. However, the quantum approximate optimization algorithm (QAOA) with a standard transverse-field mixer induces biases among degen...
Universal Digitized Counterdiabatic Driving
Takuya Hatomura·Jan 22, 2026
Counterdiabatic driving realizes parameter displacement of an energy eigenstate of a given parametrized Hamiltonian using the adiabatic gauge potential. In this paper, we propose a universal method of digitized counterdiabatic driving, constructing t...
Renormalization Treatment of IR and UV Cutoffs in Waveguide QED and Implications to Numerical Model Simulation
Romain Piron, Akihito Soeda·Jan 22, 2026
We present a non-perturbative, first-principles derivation of renormalization relations for waveguide-QED models, explicitly accounting for the infrared (IR) and ultraviolet (UV) cutoffs that are necessarily introduced in numerical simulations. By fo...
Magic of discrete lattice gauge theories
Gianluca Esposito, Simone Cepollaro, Luigi Cappiello +1 more·Jan 22, 2026
Simulation of quantum field theories and fundamental interactions are one of the most challenging tasks in modern particle physics. Classical computers generally fail to reproduce accurate results when it comes to strongly coupled theories such as QC...
Classical Simulation of Noiseless Quantum Dynamics without Randomness
Jue Xu, Chu Zhao, Xiangran Zhang +2 more·Jan 22, 2026
Simulating noiseless quantum dynamics classically faces a fundamental dilemma: tensor-network methods become inefficient as entanglement saturates, while Pauli-truncation approaches typically rely on noise or randomness. To close the gap, we propose ...
Unsplit Spreading: An Overlooked Signature of Long-Range Interaction
Jian-Feng Wu, Yi Huang, Yu-Xiang Zhang·Jan 22, 2026
In conventional lattice models, the dispersion relation $ω(k)$ is assumed to be a smooth function. We prove that this smoothness implies the splitting of an initially localized excitation into counter-propagating wave packets. Consequently, unsplit s...
Quantum-HPC hybrid computation of biomolecular excited-state energies
Kentaro Yamamoto, Riku Masui, Takahito Nakajima +16 more·Jan 22, 2026
We develop a workflow within the ONIOM framework and demonstrate it on the hybrid computing system consisting of the supercomputer Fugaku and the Quantinuum Reimei trapped-ion quantum computer. This hybrid platform extends the layered approach for bi...
A Sublinear-Time Quantum Algorithm for High-Dimensional Reaction Rates
Tyler Kharazi, Ahmad M. Alkadri, Kranthi K. Mandadapu +1 more·Jan 21, 2026
The Fokker-Planck equation models rare events across sciences, but its high-dimensional nature challenges classical computers. Quantum algorithms for such non-unitary dynamics often suffer from exponential {decay in} success probability. We introduce...