Papers
Live trends in quantum computing research, updated daily from arXiv.
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16,712 papers in 12 months (-57% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Non-Clifford Benchmarking via Ensemble Feature Selection
Stancho G. Stanchev, Nikolay V. Vitanov·Jul 1, 2026
We propose an Ensemble Feature Selection (EFS) method for fast estimation of process infidelity of involutory multi-qubit gates, including non-Clifford targets, for which standard Clifford-based benchmarking does not apply. The method selects a compa...
Continuous Observation of Quantum Systems
Hans Maassen·Jul 1, 2026
In a series of papers in the 1980's Alexander Holevo proved a classification theorem for continuous quantum measurement processes, or, as they would today be called, stationary quantum trajectories in continuous time. His main tools were functional a...
One cut, two parities: exact Fibonacci charge responses in the golden chain
Yi Liang·Jul 1, 2026
We determine the exact cut-charge Born law in the ground state of every periodic antiferromagnetic golden chain with at least three sites. Its two parity branches retain different information. At even length, the ratio of nontrivial to vacuum probabi...
Strange Luttinger liquids in a cavity-embedded one-dimensional electronic chain
Danh-Phuong Nguyen, Christophe Mora, Cristiano Ciuti·Jul 1, 2026
We study a one-dimensional electronic chain coupled to a homogeneous quantized vacuum field and electron-electron interactions. In the absence of the latter, we derive a low-energy effective description in the presence of light-matter coupling, which...
Entanglement-spectrum fingerprint of a non-invertible symmetry: the Kramers-Wannier duality defect on the lattice
Yi Liang·Jul 1, 2026
A non-invertible topological line does not by itself determine a physical reduced density matrix in a spatially twisted sector. We close this gap for the Kramers-Wannier defect of the critical Ising chain by fixing its orientation, charge sector, zer...
Fisher Glasses: Tail-Certified Quantum Metrology in Quenched Environments
El Mustapha Mansouri, Keigo Arai·Jul 1, 2026
Quantum metrological advantage is certified by averaged Fisher responses: contrast, susceptibility, or quantum Fisher information (QFI). This fails in quenched sensors, where slow environmental variables freeze within a session but vary between repet...
Optimizing Symmetry Informed Probabilistic Error Cancellation
Tom O'Leary, Daniel J. Egger, Dieter Jaksch·Jul 1, 2026
We show that combining quantum error detection (QED) with probabilistic error cancellation (PEC) gives more accurate and lower-variance estimates than PEC alone, provided that the symmetry measurements required for QED are carefully chosen. Because n...
Quantum-Informed Portfolio Selection: An End-to-End Pipeline Validated on Trapped-Ion Hardware with Real Market Data
Romina Yalovetzky, Martin J. A. Schuetz, Zichang He +11 more·Jul 1, 2026
Portfolio diversification - a cornerstone of modern investment management - can be formulated as a Maximum Independent Set (MIS) problem on asset correlation graphs. Solving this problem at scale is computationally challenging, motivating the explora...
Susceptibility-kinetic uncertainty relations for quantum systems
Didrik Palmqvist, Ludovico Tesser, Janine Splettstoesser·Jul 1, 2026
Kinetic uncertainty relations bound current precision of stochastic processes by dynamical activity. The extension of these bounds to quantum systems has been impeded by coherence, strong system-reservoir coupling, and the subtlety of defining dynami...
Analytical connection between exact and approximate solutions of the periodically-driven two-level system starting from the Heun equation
Pietro Follia, Bassano Vacchini·Jul 1, 2026
We investigate and establish an analytic connection between the exact solutions describing the dynamics of a two-level system driven by periodic external fields, focusing on the cases of linear driving and the so-called rotating-wave approximation, o...
Limitations of Error Model Approximations in Quantum Network Simulation
Julia Freund, Jorge Miguel-Ramiro, Julius Wallnöfer +1 more·Jul 1, 2026
Efficient classical simulation of large-scale quantum networks frequently relies on noise approximations, which consider a restricted set of operators to describe noisy channels and operations. In this work, we demonstrate how such simplified error m...
Exceptional points in dissipative coupling polaron-polaritons
A. J. Vega-Carmona, D. A. Mendoza, A. Camacho-Guardian +1 more·Jul 1, 2026
Understanding how strong correlations and dissipation combine to shape collective quantum excitations is a central challenge in many-body physics. We investigate the effect of dissipative light-matter coupling on strongly interacting exciton-polarito...
Dirac oscillator in a helically twisted spacetime with axial torsion
Matheus D. Moro, Fabiano M. Andrade, Faizuddin Ahmed +1 more·Jul 1, 2026
We investigate the Dirac oscillator in a helically twisted spacetime endowed with a uniform axial torsion. Starting from an orthonormal coframe, we compute the Levi--Civita spin connection explicitly and separate the geometric contribution from the a...
Bridging Quantum Computing Paradigms toward Semiconductor Yield: A Controlled CV-versus-DV Comparison on Wafer-Map Defect Classification
Yeonhong Kim, Jonghyeok Im, Monu Nath Baitha +1 more·Jul 1, 2026
Realizing quantum neural networks (QNNs) in industry requires knowing which quantum computing paradigm suits which task. Motivated by AI accelerators and high-bandwidth memory, where die stacking makes wafer-level defect screening central to yield, w...
The Dynamical Lie Algebra of QAOA-MaxCut on the Complete Graph
Jonathan Allcock, Pei Yuan, Shengyu Zhang·Jul 1, 2026
We give an analytical expression for the dynamical Lie algebra corresponding to the QAOA-MaxCut problem on complete graphs, and show that the variance of the associated loss function scales linearly in the number of qubits. This solves an open proble...
Exact quantum time compatible with positive energy
Ovidiu Cristinel Stoica·Jul 1, 2026
What would it be like to be in a superposition of yesterday, today, and tomorrow? This question may seem at best entertaining, but it is necessary, and exploring it allows us to understand how exact irreversible clocks and change are possible, despit...
Leveraging LLM-Based Agentic Systems to Generate Quantum Applications for Test Optimization
Ming Tao, Yuechen Li, Tao Yue +2 more·Jul 1, 2026
Quantum computing is increasingly explored for software engineering (SE) optimization, but translating natural-language (NL) task-level requirements into executable quantum applications still demands substantial quantum and programming expertise. We ...
Twisted Gaussian Schell States in Quantum Optics: Twist-Assisted Nonclassicality and Entanglement
Fabricio Toscano, G. Cañas, A. Z. Khoury +2 more·Jul 1, 2026
We introduce the Twisted Gaussian Schell (TGS) state, a two-mode mixed Gaussian state defined as the quantum-optical analog of the Twisted Gaussian Schell-model beam of classical paraxial optics, characterized by the so-called twist phase. In the TGS...
Simulating generic single-qubit open-dynamics via polarization-frequency coupling in a photonic interferometer
Kalle Raikisto, Alberto Ferrara, Tom Kuusela +2 more·Jul 1, 2026
We propose a photonic platform for simulating arbitrary single-qubit open-system dynamics using a single photon in an open Mach-Zehnder interferometer. A birefringent quartz plate induces a coupling between the polarization and frequency degrees of f...
Synthesizing Compound Pulse Gadgets for Hamiltonian Simulation on Trapped-Ion Platforms
Ria Patel, Masoud Hakimi Heris, Yuan Liu +1 more·Jul 1, 2026
Standard gate-level transpilation introduces significant physical noise and overhead for high-precision quantum algorithms, such as the Quantum Singular Value Transformation (QSVT), on near-term trapped-ion hardware. Current compilers treat quantum o...