Ultrastrong magnon–magnon coupling dominated by antiresonant interactions

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dc.citation.articleNumber3115en_US
dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber12en_US
dc.contributor.authorMakihara, Takumaen_US
dc.contributor.authorHayashida, Kenjien_US
dc.contributor.authorNoe Ii, G. Timothyen_US
dc.contributor.authorLi, Xinweien_US
dc.contributor.authorMarquez Peraca, Nicolasen_US
dc.contributor.authorMa, Xiaoxuanen_US
dc.contributor.authorJin, Zuanmingen_US
dc.contributor.authorRen, Weien_US
dc.contributor.authorMa, Guohongen_US
dc.contributor.authorKatayama, Ikufumien_US
dc.contributor.authorTakeda, Junen_US
dc.contributor.authorNojiri, Hiroyukien_US
dc.contributor.authorTurchinovich, Dmitryen_US
dc.contributor.authorCao, Shixunen_US
dc.contributor.authorBamba, Motoakien_US
dc.contributor.authorKono, Junichiroen_US
dc.date.accessioned2021-06-10T17:36:58Zen_US
dc.date.available2021-06-10T17:36:58Zen_US
dc.date.issued2021en_US
dc.description.abstractExotic quantum vacuum phenomena are predicted in cavity quantum electrodynamics systems with ultrastrong light-matter interactions. Their ground states are predicted to be vacuum squeezed states with suppressed quantum fluctuations owing to antiresonant terms in the Hamiltonian. However, such predictions have not been realized because antiresonant interactions are typically negligible compared to resonant interactions in light-matter systems. Here we report an unusual, ultrastrongly coupled matter-matter system of magnons that is analytically described by a unique Hamiltonian in which the relative importance of resonant and antiresonant interactions can be easily tuned and the latter can be made vastly dominant. We found a regime where vacuum Bloch-Siegert shifts, the hallmark of antiresonant interactions, greatly exceed analogous frequency shifts from resonant interactions. Further, we theoretically explored the system’s ground state and calculated up to 5.9 dB of quantum fluctuation suppression. These observations demonstrate that magnonic systems provide an ideal platform for exploring exotic quantum vacuum phenomena predicted in ultrastrongly coupled light-matter systems.en_US
dc.description.sponsorshipFondren Library Open Access Author Funden_US
dc.identifier.citationMakihara, Takuma, Hayashida, Kenji, Noe Ii, G. Timothy, et al.. "Ultrastrong magnon–magnon coupling dominated by antiresonant interactions." <i>Nature Communications,</i> 12, (2021) Springer Nature: https://doi.org/10.1038/s41467-021-23159-z.en_US
dc.identifier.digitals41467-021-23159-zen_US
dc.identifier.doihttps://doi.org/10.1038/s41467-021-23159-zen_US
dc.identifier.urihttps://hdl.handle.net/1911/110725en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleUltrastrong magnon–magnon coupling dominated by antiresonant interactionsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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