Operating a non-Hermitian atomic magnetometer with programmable digital electronics

Operating a non-Hermitian atomic magnetometer with programmable digital electronics | 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 Operating a non-Hermitian atomic magnetometer with programmable digital electronics Hui Jing, Tianyu Qian, Jipeng Xu, Ran Huang, Keyu Xia, Zhiqiang Xiong, and 9 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7100360/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 Non-Hermitian systems with exceptional points (EPs) have attracted much attention for their potential to increase measurement sensitivity. However, EPs are difficult to generate and control accurately in most physical systems, as these systems are extremely sensitive to environmental disturbances. We propose a unique non-Hermitian system formed by hybridizing digital electronics with physical sensors. The programmability of digital electronics allows EPs to be created, manipulated and applied easily and flexibly. More interestingly, the modular design of our system facilitates coupling with various physical sensors, increasing their linear response to an EP-enhanced sublinear response. By coupling digital electronics with an atomic magnetometer to form an EP-enhanced magnetometer, we achieved a 4.27-fold sensitivity increase for weak magnetic field measurements. Our work opens a new frontier at the junction of three active fields, namely, atomic physics, electronics, and non-Hermitian devices. The programmability, scalability, and practicality of our approach could further increase the universality, complexity, and intelligence of non-Hermitian fields. Physical sciences/Optics and photonics Physical sciences/Engineering/Electrical and electronic engineering Full Text Additional Declarations There is NO Competing Interest. Supplementary Files Supplementarymaterials.pdf Supplementary information 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. 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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-7100360","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":523283271,"identity":"1bbe0ec6-0817-43a1-93b2-c739e5466268","order_by":0,"name":"Hui 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