--> Quantum Physics arXiv:2605.12538 (quant-ph) [Submitted on 5 May 2026] Title:Quantum chaos with graphs: a silicon photonics plateform Authors:H. Girin, X. Chécoury, B. Odouard, S. Bittner, J.-R. Coudevylle, B. Dietz, C. Lafargue, M. Lebental View a PDF of the paper titled Quantum chaos with graphs: a silicon photonics plateform, by H. Girin and 7 other authors View PDF HTML (experimental) Abstract:We provide a versatile plateform to investigate wave-particle duality. This photonic waveguide network implements quantum (wave) graphs as proposed in the seminal paper by Kottos \&amp; Smilansky [PRL \textbf{85} 968 (2000)]. We experimentally demonstrated that the spectral statistics of a mixing (i.e. strongly chaotic) graph follows the predictions of random matrix theory, contrary to an ergodic (i.e. less chaotic) graph, in agreement with the Bohigas-Giannoni-Schmit conjecture [PRL \textbf{52} 1 (1984)]. This plateform also gives access to the wavefunction patterns, which are expected to verify the quantum ergodicity theorem. Comments: Subjects: Quantum Physics (quant-ph); Instrumentation and Detectors (physics.ins-det) Cite as: arXiv:2605.12538 [quant-ph] &nbsp; (or arXiv:2605.12538v1 [quant-ph] for this version) &nbsp; https://doi.org/10.48550/arXiv.2605.12538 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Melanie Lebental [view email] [v1] Tue, 5 May 2026 09:12:01 UTC (41,760 KB) Full-text links: Access Paper: View a PDF of the paper titled Quantum chaos with graphs: a silicon photonics plateform, by H. Girin and 7 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph &lt;&nbsp;prev &nbsp; | &nbsp; next&nbsp;&gt; new | recent | 2026-05 Change to browse by: physics physics.ins-det References &amp; Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Ci

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Quantum chaos with graphs: a silicon photonics plateform

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--> Quantum Physics arXiv:2605.12546 (quant-ph) [Submitted on 9 May 2026] Title:Quantum Field-Theoretic Predictions of Ψ-Epistemic Models of Quantum Mechanics Authors:İnanç Şahin View a PDF of the paper titled Quantum Field-Theoretic Predictions of {\Psi}-Epistemic Models of Quantum Mechanics, by \.Inan\c{c} \c{S}ahin View PDF HTML (experimental) Abstract:$\Psi$-epistemic models of quantum mechanics imply that the quantum state does not correspond to physical reality, but instead reflects the observer's knowledge of the underlying quantum system. The epistemic view of the quantum state has the potential to shed light on several foundational problems of quantum theory and has attracted considerable attention in the literature. On the other hand, the Pusey-Barrett-Rudolph theorem demonstrated that broad classes of $\psi$-epistemic models must lead to predictions that deviate from those of quantum mechanics. Although the original theorem involved entangled joint measurements on composite systems, alternative no-go theorems involving measurements on single quantum systems were developed shortly thereafter. Experimental investigations of the deviations predicted by $\psi$-epistemic models from quantum mechanics are still ongoing. So far, such tests have been performed within the framework of non-relativistic quantum mechanics and predominantly rely on quantum information based measurement procedures. In this work, assuming that $\psi$-epistemic models respect Lorentz symmetry, we show that they can give rise to deviations from standard quantum field-theoretic predictions through modifications of polarized scattering cross sections and decay widths. Our results do not require a relativistic formulation of ontological models or of the Harrigan-Spekkens criterion; Lorentz symmetry alone is sufficient. The present work constitutes a proof-of-principle study demonstrating that particle physics tests of the ontological status of the quantum state are possible and that $\psi$-e

Quantum Field-Theoretic Predictions of {\Psi}-Epistemic Models of Quantum Mechanics

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Atom-based RF sensing platform establishes new category within quantum sensing, backed by active U.S., U.K., and Australian defense contracts LOUISVILLE, CO | MAY 13, 2026 — Infleqtion (NYSE: INFQ), a global leader in quantum computing and quantum sensing powered by neutral-atom technology, today formally established Quantum Spectrum as a new category within quantum sensing. Quantum Spectrum represents the first fundamental shift in radio frequency (RF) sensing architecture in decades, arriving exactly when the world needs trusted signals most. “We’ve been developing atom-based RF sensing for nearly a decade, and the milestones we’ve reached make clear that now is the time to accelerate with greater corporate focus,” said Matt Kinsella, CEO of Infleqtion.&nbsp; “We’re building prototypes, running field trials, and hardening these systems for real-world deployment. Quantum Spectrum is a new category we are both defining and leading.” Every government depends on radio-frequency signals to navigate, communicate, detect threats, move goods, manage airspace, and operate critical infrastructure. Those signals are now easier to jam, spoof, hide, and overwhelm. Quantum Spectrum is the answer: atom-based RF sensing that detects, classifies, and authenticates signals in a world of drone proliferation, GPS spoofing, jamming, electronic warfare, and spectrum congestion where conventional receivers are increasingly insufficient. Quantum Spectrum joins Quantum Clocks, Quantum Gravity Gradiometers, and Quantum Inertial Sensing as a defined segment of the quantum sensing domain. Infleqtion is the first company with contracted defense programs in three allied nations developing atom-based RF sensing for operational deployment, with prime integrator partners including Dell Federal, L3Harris, and SAIC already engaged. A New Category for a Growing Problem Quantum Spectrum introduces a new sensing layer. Infleqtion’s Quantum Spectrum receivers use Rydberg atoms as the sensing medium, re

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Infleqtion Introduces Quantum Spectrum, the First Fundamental Shift in RF Sensing Architecture in Decades

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Quantum breakthrough could revolutionize teleportation and computing ScienceDaily

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Quantum breakthrough could revolutionize teleportation and computing - ScienceDaily

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Science News from research organizations Quantum breakthrough could revolutionize teleportation and computing A long-unsolved quantum puzzle has finally been cracked, opening new possibilities for teleportation-like technologies and next-generation quantum computing. Date: May 13, 2026 Source: Kyoto University Summary: Scientists in Japan have developed a new way to instantly detect elusive quantum “W states,” a major milestone for quantum technology. The breakthrough could help unlock faster quantum communication, teleportation, and powerful new computing systems. Share: Facebook Twitter Pinterest LinkedIN Email FULL STORY Achieving the entanglement measurement of the W state. Credit: KyotoU / Takeuchi lab Quantum entanglement is one of the strangest features of the quantum world. It describes a situation in which particles such as photons are so deeply linked that their properties cannot be fully understood one by one. Instead, the system has to be treated as a whole. That idea sharply conflicts with the classical view that every particle should carry its own independent reality, a conflict that famously troubled Einstein. Today, entanglement is more than a philosophical puzzle. It is a key ingredient in many of the technologies researchers hope will define the future, including quantum computing, quantum communication, quantum teleportation, and quantum networks. The Challenge of Reading Quantum States To build those technologies, scientists need to do more than create entangled states. They also need reliable ways to tell exactly what kind of entangled state they have made. That is where the problem becomes difficult. A standard method called quantum tomography can estimate a quantum state, but the number of measurements needed grows explosively as more photons are added. For systems made of many entangled photons, that creates a serious bottleneck. A more powerful solution would be an entangled measurement, which can identify certain entangled states in a singl

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Quantum chaos with graphs: a silicon photonics plateform

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Quantum Field-Theoretic Predictions of {\Psi}-Epistemic Models of Quantum Mechanics

Infleqtion Introduces Quantum Spectrum, the First Fundamental Shift in RF Sensing Architecture in Decades

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Quantum chaos with graphs: a silicon photonics plateform

Quantum Field-Theoretic Predictions of {\Psi}-Epistemic Models of Quantum Mechanics

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Quantum breakthrough could revolutionize teleportation and computing

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