Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons
Cavity-magnon polaritons (CMPs) are the associated quasiparticles of the hybridization between cavity photons and magnons in a magnetic sample placed in a microwave resonator. In the strong coupling regime, where the macroscopic coupling strength exceeds the individual dissipation, there is a cohere...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ab5c12 |
| _version_ | 1797750442441048064 |
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| author | Isabella Boventer Mathias Kläui Rair Macêdo Martin Weides |
| author_facet | Isabella Boventer Mathias Kläui Rair Macêdo Martin Weides |
| author_sort | Isabella Boventer |
| collection | DOAJ |
| description | Cavity-magnon polaritons (CMPs) are the associated quasiparticles of the hybridization between cavity photons and magnons in a magnetic sample placed in a microwave resonator. In the strong coupling regime, where the macroscopic coupling strength exceeds the individual dissipation, there is a coherent exchange of information. This renders CMPs as promising candidates for future applications such as in information processing. Recent advances on the study of the CMP now allow not only for creation of CMPs on demand, but also for tuning of the coupling strength—this can be thought of as the enhancement or suppression of information exchange. Here, we go beyond standard single-port driven CMPs and employ a two-port driven CMP. We control the coupling strength by the relative phase ϕ and amplitude field ratio δ _0 between both ports. Specifically, we derive a new expression from input–output theory for the study of the two-port driven CMP and discuss the implications on the coupling strength. Furthermore, we examine intermediate cases where the relative phase is tuned between its maximal and minimal value and, in particular, the high δ _0 regime, which has not been yet explored. |
| first_indexed | 2024-03-12T16:32:45Z |
| format | Article |
| id | doaj.art-b7c9e62ac6e34f5a8127d366aa2b4246 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:32:45Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-b7c9e62ac6e34f5a8127d366aa2b42462023-08-08T15:25:38ZengIOP PublishingNew Journal of Physics1367-26302019-01-01211212500110.1088/1367-2630/ab5c12Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritonsIsabella Boventer0https://orcid.org/0000-0002-9332-7840Mathias Kläui1Rair Macêdo2https://orcid.org/0000-0003-3358-798XMartin Weides3https://orcid.org/0000-0002-2718-6795Institute of Physics, Johannes Gutenberg University Mainz , D-55128 Mainz, Germany; Unité Mixte de Physique CNRS, Thales, University Paris-Sud, Université Paris-Saclay , F-91767 Palaiseau, FranceInstitute of Physics, Johannes Gutenberg University Mainz , D-55128 Mainz, Germany; Graduate School of Excellence Materials Science in Mainz, Staudinger Weg 7, D-55128 Mainz, GermanyJames Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow , Glasgow G12 8QQ, United KingdomJames Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow , Glasgow G12 8QQ, United KingdomCavity-magnon polaritons (CMPs) are the associated quasiparticles of the hybridization between cavity photons and magnons in a magnetic sample placed in a microwave resonator. In the strong coupling regime, where the macroscopic coupling strength exceeds the individual dissipation, there is a coherent exchange of information. This renders CMPs as promising candidates for future applications such as in information processing. Recent advances on the study of the CMP now allow not only for creation of CMPs on demand, but also for tuning of the coupling strength—this can be thought of as the enhancement or suppression of information exchange. Here, we go beyond standard single-port driven CMPs and employ a two-port driven CMP. We control the coupling strength by the relative phase ϕ and amplitude field ratio δ _0 between both ports. Specifically, we derive a new expression from input–output theory for the study of the two-port driven CMP and discuss the implications on the coupling strength. Furthermore, we examine intermediate cases where the relative phase is tuned between its maximal and minimal value and, in particular, the high δ _0 regime, which has not been yet explored.https://doi.org/10.1088/1367-2630/ab5c12microwave cavity resonatorscavity-magnon-polaritons (CMPs)ferromagnetic resonancehybrid systemsstrong coupling |
| spellingShingle | Isabella Boventer Mathias Kläui Rair Macêdo Martin Weides Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons New Journal of Physics microwave cavity resonators cavity-magnon-polaritons (CMPs) ferromagnetic resonance hybrid systems strong coupling |
| title | Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons |
| title_full | Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons |
| title_fullStr | Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons |
| title_full_unstemmed | Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons |
| title_short | Steering between level repulsion and attraction: broad tunability of two-port driven cavity magnon-polaritons |
| title_sort | steering between level repulsion and attraction broad tunability of two port driven cavity magnon polaritons |
| topic | microwave cavity resonators cavity-magnon-polaritons (CMPs) ferromagnetic resonance hybrid systems strong coupling |
| url | https://doi.org/10.1088/1367-2630/ab5c12 |
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