Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces

Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces | 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 Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces Fatemeh Davoodi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6796190/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 Long-lived coherent quasiparticles are a promising foundation for novel quantum technologies, where maintaining quantum coherence is crucial. Decoherence, driven by finite emitter lifetimes, remains a central challenge in quantum computing. Here, we control the dynamics of spatially separated quantum emitters via preserving their phase information by introducing a topological waveguide as a robust chiral reservoir. Incoherent quantum emitters randomly positioned near a perturbed honeycomb plasmonic interface and couple to the mutual topological interface mode. Using the S 3 Stokes parameter, we trace far-field polarization patterns that reflect emitter coherence and spin–momentum locking. We show that even weakly coupled emitters exhibit coherent excitation and imprint phase on the emission. Time-domain dynamics reveal signatures of superradiance and subradiance that correlate with spatial interference in S 3. These spatial-temporal features confirm that the observed polarization patterns arise from coherent quantum many-body dynamics, not classical interference. This challenges the conventional dichotomy between incoherent and coherent regimes, revealing that topological chiral photonic environments mediate long-range quantum correlations beyond standard waveguide QED. Physical sciences/Optics and photonics/Optical physics/Quantum optics Physical sciences/Optics and photonics/Optical physics/Nanophotonics and plasmonics Physical sciences/Optics and photonics/Optical physics/Single photons and quantum effects Full Text Additional Declarations There is NO Competing Interest. 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-6796190","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":465152901,"identity":"b968f65e-6d02-4939-bc67-5f951c5470a4","order_by":0,"name":"Fatemeh Davoodi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2ElEQVRIie3PMQuCQBjG8TcOchFbX4f6DAeBNAh9lfcIcmkIWoQahKDPY1O0XQi5CK1uOTk1CEE4RWdRbZ1jw/1dHPzdcwKYTH+YFVGnAF+9MfUQjACkhtiSGJfTD8FWpItP0iBoRaxJuawIxM4CxosQwUkjDbFLL5eK7NfAiDIEN9PMjJG8/FCDiJPeVYoNAs9Js4LBbd6sxAkwKe6KnAsdmXnwJiSiZuW3UP9yWWBGOGwIpyPabqa7mBVsq5D8fnySzK1X/sBJpWbmFX7PaPW9yWQymX73APbOQtSB94q5AAAAAElFTkSuQmCC","orcid":"https://orcid.org/0000-0002-3774-958X","institution":"Kiel University","correspondingAuthor":true,"prefix":"","firstName":"Fatemeh","middleName":"","lastName":"Davoodi","suffix":""}],"badges":[],"createdAt":"2025-06-01 14:30:22","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6796190/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6796190/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":84742196,"identity":"30ad07fd-b112-4ea4-9287-fd0b9f99cccb","added_by":"auto","created_at":"2025-06-16 22:03:21","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1357534,"visible":true,"origin":"","legend":"","description":"","filename":"BeyondDecoherenceControltheCollectiveQuantumDynamicsofQuasiparticlesinTopologicalInterface.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6796190/v1_covered_55843204-717b-4e27-849c-fa4a99b2619f.pdf"}],"financialInterests":"There is \u003cb\u003eNO\u003c/b\u003e Competing Interest.","formattedTitle":"Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces","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-6796190/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6796190/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eLong-lived coherent quasiparticles are a promising foundation for novel quantum technologies, where maintaining quantum coherence is crucial. Decoherence, driven by finite emitter lifetimes, remains a central challenge in quantum computing. Here, we control the dynamics of spatially separated quantum emitters via preserving their phase information by introducing a topological waveguide as a robust chiral reservoir. Incoherent quantum emitters randomly positioned near a perturbed honeycomb plasmonic interface and couple to the mutual topological interface mode. Using the S\u003csub\u003e3\u003c/sub\u003e Stokes parameter, we trace far-field polarization patterns that reflect emitter coherence and spin–momentum locking. We show that even weakly coupled emitters exhibit coherent excitation and imprint phase on the emission. Time-domain dynamics reveal signatures of superradiance and subradiance that correlate with spatial interference in S\u003csub\u003e3. \u003c/sub\u003eThese spatial-temporal features confirm that the observed polarization patterns arise from coherent quantum many-body dynamics, not classical interference. This challenges the conventional dichotomy between incoherent and coherent regimes, revealing that topological chiral photonic environments mediate long-range quantum correlations beyond standard waveguide QED.\u003c/p\u003e","manuscriptTitle":"Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-06-04 05:02:55","doi":"10.21203/rs.3.rs-6796190/v1","editorialEvents":[],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"communications-physics","isNatureJournal":true,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"commsphys","sideBox":"Learn more about [Communications Physics](http://www.nature.com/commsphys/)","snPcode":"","submissionUrl":"","title":"Communications Physics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"ejp","reportingPortfolio":"Communications Series","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"f910e76f-f7af-4c92-aafd-a80e81434213","owner":[],"postedDate":"June 4th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":49377194,"name":"Physical sciences/Optics and photonics/Optical physics/Quantum optics"},{"id":49377195,"name":"Physical sciences/Optics and photonics/Optical physics/Nanophotonics and plasmonics"},{"id":49377196,"name":"Physical sciences/Optics and photonics/Optical physics/Single photons and quantum effects"}],"tags":[],"updatedAt":"2025-07-16T07:30:22+00:00","versionOfRecord":[],"versionCreatedAt":"2025-06-04 05:02:55","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6796190","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6796190","identity":"rs-6796190","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}