Quantum Dial for High-Harmonic Generation

Quantum Dial for High-Harmonic Generation | 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 Quantum Dial for High-Harmonic Generation Lu Wang, Andrew Parks, Adam Thorpe, Graeme Bart, Thomas Brabec This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7633423/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) is a highly nonlinear optical process that typically requires an intense laser to trigger emissions at integer multiples of the driving field frequency. Since HHG is commonly used as a spectroscopic tool to probe material properties, it becomes impossible to extract information about a material without introducing distortions caused by the strong driving field. Recent advances in bright squeezed vacuum sources have allowed HHG to be driven by purely quantum fields alone. Our work focuses on controlling and tuning HHG emission using a weak classical driving field with energy 1000 times less than that used in conventional HHG experiments, perturbed by an even weaker quantum field, such as bright squeezed vacuum (BSV). Our technique opens new avenues for nonlinear spectroscopy of materials by minimizing issues such as laser-induced damage, distortions, and heating. Our results show that a BSV pulse, containing less than ~0.5% of the driving laser energy, can serve as an optical dial for tuning nonlinear emission, electron dynamics, and ionization. Physical sciences/Physics/Optical physics/Quantum optics Physical sciences/Physics/Optical physics/High-harmonic generation Full Text Additional Declarations There is NO Competing Interest. Supplementary Files Suppfinal.pdf Supplementary Material 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. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-7633423","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":516911333,"identity":"751e44f5-eab3-4875-a45e-32d7519d1289","order_by":0,"name":"Lu Wang","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3ElEQVRIiWNgGAWjYBACPhjDgIH5AJCyYGDgIaCFDUpLGDCwJTAwJEiQpIXHgEgtEglsEj931NaZ85/5+Jj3h4QcP88Bxg8fc/Brkew9c1zCsuHsZmOeBAljyd4GZsmZ2/BrucHbdkzC4GDvNmmglsQN5xnYmHkJaLn5F6TlMM8z4rXc5m2rkTA4xsMG0XK2gYAWnoftv2XbDkhuOMNmbDgnDeiXnoPNeP3Cz5582PBtWx2/wfnDDx+8sbEBhljywQ8f8WhhYGBsABKHMUQIgjpiFI2CUTAKRsFIBQAgB0g4gaK3FQAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-3488-943X","institution":"University of Ottawa","correspondingAuthor":true,"prefix":"","firstName":"Lu","middleName":"","lastName":"Wang","suffix":""},{"id":516911334,"identity":"c232d325-8bf3-4cc2-8ddc-3a86d9233f2e","order_by":1,"name":"Andrew Parks","email":"","orcid":"https://orcid.org/0000-0002-5409-6365","institution":"University of Ottawa","correspondingAuthor":false,"prefix":"","firstName":"Andrew","middleName":"","lastName":"Parks","suffix":""},{"id":516911335,"identity":"c10bafce-b0e9-47a9-8b29-c783e33ed31d","order_by":2,"name":"Adam Thorpe","email":"","orcid":"https://orcid.org/0000-0003-2926-7334","institution":"University of Ottawa","correspondingAuthor":false,"prefix":"","firstName":"Adam","middleName":"","lastName":"Thorpe","suffix":""},{"id":516911336,"identity":"d5f954ef-ae34-49cc-bb63-651980d6cd0e","order_by":3,"name":"Graeme Bart","email":"","orcid":"","institution":"University of Ottawa","correspondingAuthor":false,"prefix":"","firstName":"Graeme","middleName":"","lastName":"Bart","suffix":""},{"id":516911337,"identity":"825eefc9-0a2a-4e00-9614-c46805f6d6db","order_by":4,"name":"Thomas Brabec","email":"","orcid":"","institution":"University of Ottawa","correspondingAuthor":false,"prefix":"","firstName":"Thomas","middleName":"","lastName":"Brabec","suffix":""}],"badges":[],"createdAt":"2025-09-16 19:20:10","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7633423/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7633423/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":93521414,"identity":"ce87cae4-3152-4360-a35e-3280886308ab","added_by":"auto","created_at":"2025-10-14 17:53:43","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1349353,"visible":true,"origin":"","legend":"","description":"","filename":"mainfinal.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7633423/v1_covered_df6c9315-5ac8-4f86-a886-dd61ed7e26fe.pdf"},{"id":92824186,"identity":"2b60dbbf-d846-4170-a773-8f24d29baf2e","added_by":"auto","created_at":"2025-10-06 03:49:14","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"supplement","size":1107157,"visible":true,"origin":"","legend":"Supplementary Material","description":"","filename":"Suppfinal.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7633423/v1/a3477446084fcbab45043923.pdf"}],"financialInterests":"There is \u003cb\u003eNO\u003c/b\u003e Competing Interest.","formattedTitle":"Quantum Dial for High-Harmonic Generation","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"nature-portfolio","isNatureJournal":true,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"","title":"Nature Portfolio","twitterHandle":"","acdcEnabled":false,"dfaEnabled":false,"editorialSystem":"ejp","reportingPortfolio":"","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-7633423/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7633423/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"High-harmonic generation (HHG) is a highly nonlinear optical process that typically requires an intense laser to trigger emissions at integer multiples of the driving field frequency. 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