Magnetic Field of Light Unlocks Topological Entanglement in Solids

Magnetic Field of Light Unlocks Topological Entanglement in Solids | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Magnetic Field of Light Unlocks Topological Entanglement in Solids Victor Kärcher, Tobias Reiker, HELMUT ZACHARIAS This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7971524/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version Abstract High-harmonic generation (HHG) in solids is driven and typically understood by the electric field of light, with electron dynamics reflecting the properties of the bands. Here, we demonstrate that the magnetic field component plays a pivotal role in this process and induces topologically entangled bands in solids. By synchronizing electron momenta to the magnetic field we map the Brillouin zone of the solid onto the Bloch sphere, revealing Landau–Zener transitions that flip the Berry phase and generate entangled bands. This opto-magnetic effect enhances harmonic emission and establishes the magnetic field of light as a driver of quantum coherence. Our findings extend nonlinear and topological photonics, providing a new pathway to engineer quantum states and realize topologically protected phenomena in solids. Physical sciences/Optics and photonics/Optical physics/High-harmonic generation Physical sciences/Optics and photonics/Optical physics/Nonlinear optics Physical sciences/Physics/Condensed-matter physics/Topological matter Physical sciences/Physics/Quantum physics/Qubits Physical sciences/Physics/Quantum physics/Quantum information Full Text Additional Declarations There is NO Competing Interest. Supplementary Files ThirdHarmonic.gif Non-resonant opto-magnetic modulation SupplementalQuartzNatCommun.pdf Supplementary Info Cite Share Download PDF Status: Under Review Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7971524","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":541267907,"identity":"2ceac1eb-52b2-474f-b0b4-e8d8f0cdf3e6","order_by":0,"name":"Victor 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