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Abstract
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.
Details
1 University of Glasgow, James Watt School of Engineering, Electronics & Nanoscale Engineering Division, Glasgow, UK (GRID:grid.8756.c) (ISNI:0000 0001 2193 314X)
2 Boston College, Department of Physics, Chestnut Hill, USA (GRID:grid.208226.c) (ISNI:0000 0004 0444 7053)
3 Laboratoire Albert Fert, 1 Avenue Augustin Fresnel, Palaiseau, France (GRID:grid.462731.5) (ISNI:0000 0004 0382 1752)
4 Karlsruhe Institute of Technology, Institute of Physics, Karlsruhe, Germany (GRID:grid.7892.4) (ISNI:0000 0001 0075 5874)
5 University of Colorado Colorado Springs, Center for Magnetism and Magnetic Nanostructures, Department of Physics and Energy Science, Colorado, USA (GRID:grid.266186.d) (ISNI:0000 0001 0684 1394)