Magnetically tuned continuous transition from weak to strong coupling in terahertz magnon polaritons

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dc.citation.articleNumberL012039
dc.citation.issueNumber1
dc.citation.journalTitlePhysical Review Research
dc.citation.volumeNumber5
dc.contributor.authorBaydin, Andrey
dc.contributor.authorHayashida, Kenji
dc.contributor.authorMakihara, Takuma
dc.contributor.authorTay, Fuyang
dc.contributor.authorMa, Xiaoxuan
dc.contributor.authorRen, Wei
dc.contributor.authorMa, Guohong
dc.contributor.authorNoe, G. Timothy
dc.contributor.authorKatayama, Ikufumi
dc.contributor.authorTakeda, Jun
dc.contributor.authorNojiri, Hiroyuki
dc.contributor.authorCao, Shixun
dc.contributor.authorBamba, Motoaki
dc.contributor.authorKono, Junichiro
dc.contributor.orgSmalley-Curl Institute
dc.date.accessioned2023-04-25T14:47:54Z
dc.date.available2023-04-25T14:47:54Z
dc.date.issued2023
dc.description.abstractDepending on the relative rates of coupling and dissipation, a light-matter coupled system is either in the weak- or strong-coupling regime. Here, we present a unique system where the coupling rate continuously increases with an externally applied magnetic field while the dissipation rate remains constant, allowing us to monitor a weak-to-strong coupling transition as a function of magnetic field. We observed a Rabi splitting of a terahertz magnon mode in yttrium orthoferrite above a threshold magnetic field of ∼14 T. Based on a microscopic theoretical model, we show that with increasing magnetic field the magnons transition into magnon polaritons through an exceptional point, which will open up new opportunities for in situ control of non-Hermitian systems.
dc.identifier.citationBaydin, Andrey, Hayashida, Kenji, Makihara, Takuma, et al.. "Magnetically tuned continuous transition from weak to strong coupling in terahertz magnon polaritons." <i>Physical Review Research,</i> 5, no. 1 (2023) American Physical Society: https://doi.org/10.1103/PhysRevResearch.5.L012039.
dc.identifier.digitalPhysRevResearch-5-L012039
dc.identifier.doihttps://doi.org/10.1103/PhysRevResearch.5.L012039
dc.identifier.urihttps://hdl.handle.net/1911/114826
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleMagnetically tuned continuous transition from weak to strong coupling in terahertz magnon polaritons
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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