The role of excitation vector fields and all-polarisation state control in cavity magnonics.

Autor: Joseph A; James Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow, Glasgow, G12 8QQ UK., Nair JMP; Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 USA., Smith MA; James Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow, Glasgow, G12 8QQ UK., Holland R; James Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow, Glasgow, G12 8QQ UK., McLellan LJ; James Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow, Glasgow, G12 8QQ UK., Boventer I; Laboratoire Albert Fert, 1 Avenue Augustin Fresnel, 91767 Palaiseau, France., Wolz T; Institute of Physics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany., Bozhko DA; Center for Magnetism and Magnetic Nanostructures, Department of Physics and Energy Science, University of Colorado Colorado Springs, 80918 Colorado, USA., Flebus B; Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 USA., Weides MP; James Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow, Glasgow, G12 8QQ UK., Macêdo R; James Watt School of Engineering, Electronics & Nanoscale Engineering Division, University of Glasgow, Glasgow, G12 8QQ UK.
Jazyk: angličtina
Zdroj: Npj spintronics [Npj Spintron] 2024; Vol. 2 (1), pp. 59. Date of Electronic Publication: 2024 Dec 04.
DOI: 10.1038/s44306-024-00062-z
Abstrakt: Recently the field of cavity magnonics, a field focused on controlling the interaction between magnons and photons confined within microwave resonators, has drawn significant attention as it offers a platform for enabling advancements in quantum- and spin-based technologies. Here, we introduce excitation vector fields, whose polarisation and profile can be easily tuned in a two-port cavity setup, thus acting as an effective experimental dial to explore the coupled dynamics of cavity magnon-polaritons. Moreover, we develop theoretical models that accurately predict and reproduce the experimental results for any polarisation state and field profile within the cavity resonator. This versatile experimental platform offers a new avenue for controlling spin-photon interactions by manipulating the polarisation of excitation fields. By introducing real-time tunable parameters that control the polarisation state, our experiment delivers a mechanism to readily control the exchange of information between hybrid systems.
Competing Interests: Competing interestsThe authors declare no competing interests.
(© The Author(s) 2024.)
Databáze: MEDLINE
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