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Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Identifying genuine entanglement of lossy noisy very large scale continuous variable Greenberger-Horne-Zeilinger state
Xiao-yu Chen·Nov 28, 2025
Genuine entanglement identification of large scale systems is crucial for quantum computation, quantum communication and quantum learning advantage. In contrast to experiments, where noisy intermediate-scale programmable photonic quantum processors h...
Systems that saturate the Margolus-Levitin quantum speed limit
Ole Sönnerborn·Nov 28, 2025
We provide a complete characterization of all finite-dimensional quantum systems that saturate the Margolus-Levitin quantum speed limit at arbitrary Uhlmann-Jozsa fidelity. Employing a purification-based approach, we prove that mixed-state saturation...
Deterministic quantum dot single-photon sources: operational principles and state-of-the-art specifications
J. C. Loredo, L. Stefan, B. Krogh +13 more·Nov 28, 2025
Non-classical states of light play a fundamental role in quantum technology. From photonic quantum computers and simulators, to quantum communication and sensing, quantum states of light enable performing tasks that may outperform their best classica...
Controlling Dissipative Topology Through Floquet Driving: From Transient Diagnostics to Boundary States Isolation
Koustav Roy, Shahroze Shahab, Saurabh Basu·Nov 28, 2025
Engineering dissipative dynamics in open quantum systems is under active focus, especially in topological settings where resilient edge modes are expected to exhibit decay rates distinct from the bulk. In this letter, we propose an efficient dynamica...
Nonstabilizerness Estimation using Graph Neural Networks
Vincenzo Lipardi, Domenica Dibenedetto, Georgios Stamoulis +2 more·Nov 28, 2025
This article proposes a Graph Neural Network (GNN) approach to estimate nonstabilizerness in quantum circuits, measured by the stabilizer Rényi entropy (SRE). Nonstabilizerness is a fundamental resource for quantum advantage, and efficient SRE estima...
Refinements of the Eigenstate Thermalization Hypothesis under Local Rotational Invariance via Free Probability
Elisa Vallini, Laura Foini, Silvia Pappalardi·Nov 28, 2025
The Eigenstate Thermalization Hypothesis (ETH) was developed as a framework for understanding how the principles of statistical mechanics emerge in the long-time limit of isolated quantum many-body systems. Since then, ETH has shifted the attention t...
Quantum spectroscopy of topological dynamics via a supersymmetric Hamiltonian
Hiroshi Yamauchi, Satoshi Kanno, Yuki Sato +4 more·Nov 28, 2025
Topological data analysis (TDA) characterizes complex dynamics through global invariants, but classical computation becomes prohibitive for high-dimensional data. We reinterpret time-domain dynamics as the eigenvalue spectrum of a supersymmetric (SUS...
Entanglement and Minimal Hilbert Space in the Classical Dual States of Quantum Theory
Diego J. Cirilo-Lombardo, Norma G. Sanchez·Nov 28, 2025
A precise physical description and understanding of the classical dual content of quantum theory is necessary in many disciplines today: from concepts and interpretation to quantum technologies and computation. In this paper we investigate Quantum En...
Efficient Identification of Permutation Symmetries in Many-Body Hamiltonians via Graph Theory
Saumya Shah, Patrick Rebentrost·Nov 28, 2025
The computational cost of simulating quantum many-body systems can often be reduced by taking advantage of physical symmetries. While methods exist for specific symmetry classes, a general algorithm to find the full permutation symmetry group of an a...
An Operational Quantum Information Framework for Experimental Studies on Color Perception
Roberto Leporini, Edoardo Provenzi, Michel Berthier·Nov 28, 2025
Starting from the foundational axiomatization of the perceptual color space initiated by Schrödinger in 1920 and eventually refined by Resnikoff in 1974, Berthier, Provenzi and their collaborators have recently proposed a reformulation of perceptual ...
Nonequilibrium Quasiparticle Dynamics in a MoRe-Based Superconducting Resonator under IR Excitation
O. A. Kalenyuk, S. I. Futimsky, I. A. Martynenko +5 more·Nov 28, 2025
The response of a MoRe-based superconducting resonator operating near 5 K to pulsed infrared irradiation is investigated, and the underlying physical mechanisms are analyzed. The device exhibits a pronounced nonlinear response dominated by nonequilib...
Algebraic power scaling in a slowly-quenched bosonic quantum battery
Donny Dwiputra, Ahmad R. T. Nugraha, Sasfan A. Wella +1 more·Nov 28, 2025
Bosonic modes provide a promising platform for quantum batteries as a result of their unbounded energy spectrum. However, the energy that can be stored during a coherent charging process is limited due to coherent oscillations between the charger and...
Phonon-induced frequency shift in semiconductor spin qubits
Irina Heinz, Jeroen Danon, Guido Burkard·Nov 28, 2025
Spin qubits have proven to be a feasible candidate for quantum computation, and some realizations of spin qubits already benefit from advanced device manufacturing in the semiconductor industry. Compared to superconducting platforms, spin qubits can ...
Tunable dual-band atomic mirror based on subwavelength atomic arrays under electromagnetically induced transparency
Shiwen Sun, Yi-Xin Wang, Xiao Liu +1 more·Nov 28, 2025
Subwavelength atomic arrays offer a powerful platform for engineering cooperative light-matter interactions and enabling quantum metasurfaces. We demonstrate that a two-dimensional array of three-level atoms operating under electromagnetically induce...
No-go theorem for norm-based quantumness-certification with linear functionals
Soumyakanti Bose, Yong-Siah Teo, Hyukjoon Kwon +1 more·Nov 28, 2025
Despite several approaches proposed to operationally characterize quantum states of light-those that cannot be sampled with a positive distribution over classical states-most existing formulations suffer from limited practicality or rely on convex op...
Secret Entanglement, Public Geometry. Quantum Cryptography from a Geometric Perspective
Loris Di Cairano·Nov 28, 2025
Can a secret be hidden not in which quantum state is prepared, but in the way that state \emph{moves} through its space of possibilities? Motivated by this question, we propose an essential geometric perspective on quantum cryptography in which proje...
Quantum relative entropy for unravelings of master equations
Marcos Ruibal Ortigueira, Robert de Keijzer, Luke Visser +2 more·Nov 28, 2025
This work explores connections between the quantum relative entropy of two faithful states $ρ,σ$ (i.e. full-rank density matrices) and the Kullback-Leibler divergences of classical measures $μ,ν$. Here, $μ$ and $ν$ are measures on the space of pure s...
Benchmarking neutral atom-based quantum processors at scale
Andrea B. Rava, Kristel Michielsen, J. A. Montanez-Barrera·Nov 28, 2025
In recent years, neutral atom-based quantum computation has been established as a competing alternative for the realization of fault-tolerant quantum computation. However, as with other quantum technologies, various sources of noise limit their perfo...
Generation of concurrence in a generalized central spin model with a three-spin interacting environment
Adithya A. Vasista, Anushka Agrawal, Tanay Nag·Nov 28, 2025
We consider the three-spin Ising model to study the effect of three-spin interacting term on bi-partitie entanglement between adjacent spins. The three-dominated disordered region has tri-partite entanglement causing a vanishingly small concurrence, ...
Evidence for unexpectedly low quasiparticle generation rates across Josephson junctions of driven superconducting qubits
Byoung-moo Ann, Sang-Jun Choi, Hee Chul Park +6 more·Nov 28, 2025
Recent studies find that even drives far below the superconducting gap frequency may cause drive-induced quasiparticle generation (QPG) across Josephson junctions (JJs) of superconducting qubits (SCQs), posing a serious concern for fault-tolerant sup...