Experimental amplification and squeezing of a motional state of an optically levitated nanoparticle

Experimental amplification and squeezing of a motional state of an optically levitated nanoparticle | 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 Experimental amplification and squeezing of a motional state of an optically levitated nanoparticle Martin Šiler, Martin Duchaň, Petr Jákl, Oto Brzobohaty, Andrey Rakhubovsky, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4022205/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 02 Jul, 2025 Read the published version in Communications Physics → Version 1 posted You are reading this latest preprint version Abstract A contactless control of fluctuations of phase space variables of a nanoobject belongs among the key methods needed for ultra-precise nanotechnology and the upcoming quantum technology of macroscopic systems. Here we utilize the experimental platform of a single levitating nanoparticle (NP) to demonstrate essential protocols providing linear amplification of the mechanical phase space variables together with squeezing of phase space probability distribution. The protocol combines a controlled fast switching between the parabolic trapping potential and either weak parabolic or inverted parabolic amplifying potential leading to amplification of mean value and variance (fluctuations) along an arbitrary phase space variable and squeezing along the complementary one. The protocol is completed with cold damping scheme to control the initial fluctuations of the NP phase space variables. We reached the amplification gain |G|>2, the squeezing coefficient above 4 dB, and the second-order energy correlation function approaching 3 which corresponds to a maximum for a stochastic non-equilibrium classical state. These experimental results will already allow pre-amplification and manipulation of nanomechanical NP motion for all quantum protocols if the NP cooling towards the ground state is applied. Physical sciences/Optics and photonics/Optical techniques/Optical manipulation and tweezers Physical sciences/Optics and photonics/Optical physics/Quantum optics Physical sciences/Optics and photonics/Optical physics/Nanophotonics and plasmonics Full Text Additional Declarations There is NO Competing Interest. Supplementary Files duchanSI.pdf SupplementaryMovie1.avi Supplementary Movie 1 Cite Share Download PDF Status: Published Journal Publication published 02 Jul, 2025 Read the published version in Communications Physics → 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. 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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-4022205","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":288931712,"identity":"9fc61232-250d-4539-a536-4fe2f4a064ba","order_by":0,"name":"Martin 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