Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Theoretical ab initio Evolution of Satellite Intensity near Threshold for Cu K-shell transitions
Daniel Pinheiro, Gonçalo Baptista, César Godinho +9 more·Jul 8, 2026
In this work, we have investigated the evolution of satellite intensity near the ionization threshold for Cu K-shell transitions through theoretical methods. Employing standard state-of-the-art ab initio methods, we have calculated all Cu K-shell tra...
A Quantum Reservoir Architecture for Chaotic Forecasting and a Test of Whether Its High Dimension Helps
Tushar Pandey·Jul 8, 2026
Quantum reservoir computing uses a fixed quantum circuit as a feature generator and trains only a simple linear readout on top of it. This makes it cheap to train and free of the optimisation problems that affect many quantum machine-learning models....
Associating Trajectories with Quantum Processes by Equivalent Spectra
Elliott Tammaro, Sriram Gundla, Arunabh Pratik +1 more·Jul 8, 2026
Quantum mechanics abandoned the classical notion of a particle trajectory, yet trajectories remain conceptually appealing for resolving foundational issues in quantum mechanics. Bohmian mechanics offers one route to associating trajectories with quan...
Number Fluctuations and Entanglement-Spectrum Participation in Monitored Free Fermions
Enso O. Torres Alegre·Jul 8, 2026
On finite system sizes, monitored one-dimensional free-fermion chains display a broad crossover in entanglement scaling as the measurement rate increases, from sub-extensive behavior at weak monitoring toward an area law at strong monitoring. Analyti...
A hardware-efficient variational ansatz with an exact diagonal metric for real- and imaginary-time evolution and Haar sampling
Dario Picozzi·Jul 8, 2026
Variational quantum algorithms depend on the geometry of their parametrised circuits: metric-aware optimisation and time evolution require the Fubini-Study metric, which has hitherto demanded costly auxiliary measurements and ill-conditioned inversio...
Gate induced strain on a two-dimensional hole gas in silicon
D. van der Bovenkamp, C. S. A. Müller, B. D. Pantiru +7 more·Jul 8, 2026
We show the effect of gate-induced strain on the valence band of a silicon (Si) metal oxide semiconductor (MOS) confined two-dimensional hole gas (2DHG). Increasing aluminum gate thickness, and thereby the strain in the channel, results in the onset ...
Dual-Platform Precision Measurement of the $3^2D_{5/2}$ to $4^2S_{1/2}$ $g$-Factor Ratio in $^{40}\text{Ca}^+$
Brian J. McMahon, Vikram S. Sandhu, John M. Gray +3 more·Jul 8, 2026
We report precision measurements of the ratio of Landé $g$ factors between the $3^2D_{5/2}$ and $4^2S_{1/2}$ states of a single trapped $^{40}\text{Ca}^+$ ion. The measurements are performed in two distinct ion trap apparatus: a cryogenic surface ele...
Invariance Audits for Quantum Kernels and Variational Rewinding: A Real-to-Hermitian Taxonomy of Projector, Flag, Anchor, and Density Geometry
Azadeh Alavi, Fatemeh Kouchmeshki, Hossein Akhoundi·Jul 8, 2026
Machine-learning models often replace vectors by normalized directions, projectors, covariances, subspaces, ordered flags, quantum states, or density operators before any classifier is fitted. This replacement is an invariance decision: it determines...
A majorization relation for a sum of two tensor products of positive semidefinite operators
Mohammad A. Alhejji, Cole Kelson-Packer·Jul 8, 2026
We use linear programming to prove a separable version of Ky Fan's majorization relation for a sum of two operators that are each a tensor product of $n$ positive semidefinite operators. We give an example showing that such a relation does not hold i...
Environmental Memory Effects and Quantum Resource Hierarchies in Polarized Hyperon--Antihyperon Systems
Omar Bachain, Mohamed Amazioug, Rachid Ahl Laamara·Jul 8, 2026
Hyperon--antihyperon pairs produced in $e^{+}e^{-}\rightarrow J/ψ\rightarrow Y\bar{Y}$ ($Y=Λ,Σ^{+},Ξ^{-},Ξ^{0}$) constitute a unique high-energy platform for probing quantum correlations through experimentally accessible spin observables. We investig...
Measurement-Based Quantum Computing on a Photonic Chip
Jeldrik Huster, Louis L. Hohmann, Kevin Edelmann +1 more·Jul 8, 2026
Integrated photonics provides a scalable platform for quantum information processing. In this context, measurement-based quantum computing (MBQC) offers an attractive approach in which quantum computation is realised by adaptive measurements on highl...
Complex spacing ratio statistics in the partially open asymmetric quantum baker map
Leonardo Ermann, Pablo Sesin, Alejandro M. F. Rivas +2 more·Jul 8, 2026
We study the complex eigenvalue statistics of the asymmetric quantum baker map with partial projective openings. The classical asymmetric baker map, with its discontinuity at $q=2/3$, is fully chaotic, has no reflection symmetry, and provides a clean...
Unveiling Semiclassical Structures in Quantum Chaotic Eigenstates Using Neural Networks
J. Montes, F. Borondo, Gabriel G. Carlo·Jul 8, 2026
Physics-informed neural networks and neural quantum states have consolidated a new paradigm to analyze and discover physical phenomena through constrained neural parametrizations. In this context, we investigate whether the semiclassical structure of...
Quantum Dot Moiré from Crossed MoS2 Nanoribbons
Xinting Shuai, Hao Zhang, Wenjing Wu +22 more·Jul 8, 2026
Twisted atomically thin layers have attracted much attention for Moiré potential and correlated quantum phenomena. However, existing Moiré superlattices have largely been limited to extensive wavefunction without lateral confinement. Here we introduc...
Multi-agent Autoformalization of Tensor Network Theory
Sirui Lu, Erickson Tjoa, J. Ignacio Cirac·Jul 8, 2026
We build a team of specialized large language-model agents and present an agent-driven workflow for research-level formalization in theoretical physics, with the autoformalization of the fundamental theorem of matrix-product states as a demonstration...
Quantum Sensors for Chemistry and Materials Science
Piotr Put, Arjun Pillai, Xuan Hoang Le +2 more·Jul 8, 2026
The advancement of chemistry and materials science relies on transformative analytical tools which can overcome the sensitivity, spatial resolution, and throughput limitations of conventional techniques. This review explores the application of quantu...
Super-Logarithmic Entanglement Scaling in a Monitored Superconducting Chain
Rui-Jing Guo, Zhi-Yuan Wei·Jul 8, 2026
We study the entanglement dynamics of a one-dimensional spinful $s$-wave superconductor subjected to local continuous measurements. In the rare-measurement regime, we derive a replicated Keldysh non-linear sigma model (NLSM) to describe the steady-st...
Improved GKP magic states from error-corrected non-Gaussian quantum states
Sharon David, Jack Davis, Ulysse Chabaud +1 more·Jul 8, 2026
Gate teleportation, together with magic state distillation, is a promising route towards fault-tolerant, universal computation. In the context of bosonic quantum computation, Baragiola et al. PRL 123(20).200502 (2019) showed that within the framework...
Routing Techniques for Error Corrected Silicon Spin Qubit Quantum Architectures
Julian Shen, Ludwig Schmid, Robert Wille·Jul 8, 2026
Silicon spin qubits have emerged as a promising qubit technology due to their favorable scaling and fabrication properties. However, efficiently compiling quantum circuits onto spin qubit platforms remains challenging, particularly when accounting fo...
A Sparse and Truncated State Vector Simulator for Peaked Circuits
Diogo R. Ferreira·Jul 8, 2026
In a class of quantum circuits known as peaked circuits, the goal is to predict the most probable bit string at the output of the circuit. Since these circuits are designed to have a sharp peak in their output distribution, in principle it should be ...