The role of excitation vector fields and all-polarisation state control in cavity magnonics
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.
Authors
- Alban Joseph
- Jayakrishnan M. P. Nair (ORCID: https://orcid.org/0000-0002-4462-8508)
- Martin Weides (ORCID: https://orcid.org/0000-0002-2718-6795)
- Dmytro A. Bozhko (ORCID: https://orcid.org/0000-0003-0215-4903)
- Rory Holland
- Benedetta Flebus (ORCID: https://orcid.org/0000-0002-2436-8569)
- Tim Wolz (ORCID: https://orcid.org/0000-0002-5437-2892)
- Isabella Boventer (ORCID: https://orcid.org/0000-0002-9332-7840)
- Luke J. McLellan (ORCID: https://orcid.org/0000-0002-3603-6123)
- Rair Macêdo (ORCID: https://orcid.org/0000-0003-3358-798X)
- Mawgan A. Smith (ORCID: https://orcid.org/0009-0005-4383-0869)
Institutions
- Karlsruhe Institute of Technology (DE)
- Boston College (US)
- III V Lab (FR)
- Engineering and Science University Magnet School (US)
- University of Glasgow (GB)
- University of Colorado Colorado Springs (US)
Publication Details
- Journal
- npj Spintronics
- Published
- 2024-12-04
- DOI
- https://doi.org/10.1038/s44306-024-00062-z
- Citations
- 3
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 1.01
Funders
- National Science Foundation
- U.S. Department of Energy
- Leverhulme Trust
- University of Glasgow
- Office of Science
- Engineering and Physical Sciences Research Council
- European Research Council
- Helmholtz International Research School for Teratronics, Karlsruher Institut für Technologie
- Division of Materials Research
- Basic Energy Sciences