TY - JOUR
T1 - Generation of Circulating Cavity Magnon Polaritons
AU - Bourhill, Jeremy
AU - Yu, Weichao
AU - Vlaminck, Vincent
AU - Bauer, Gerrit E.W.
AU - Ruoso, Giuseppe
AU - Castel, Vincent
N1 - Funding Information:
This work was funded by the Région Bretagne through the project OSCAR-SAD18024. This work is also part of the research program supported by the European Union through the European Regional Development Fund (ERDF) and by the Ministry of Higher Education and Research, Brittany and Rennes Mé tropole through the contrats de plan État-Région (CPER) Project Contrat de plan État-Région SOPHIE (STIC & Ondes Photonique). J.B. is supported by the Australian Research Council Centre of Excellence for Engineered Quantum Systems, CE170100009 and the Centre of Excellence for Dark Matter Particle Physics, CE200100008. W.Y. is supported by the Shanghai Pujiang Program (No. 21PJ1401500) and the Shanghai Science and Technology Committee (No. 21JC1406200) and G.B. by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant No. 19H00645.
Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/1
Y1 - 2023/1
N2 - We experimentally realize circularly polarized unidirectional cavity magnon polaritons in a torus-shaped microwave cavity loaded by a small magnetic sphere. At special positions, the clockwise and counterclockwise modes are circularly polarized, such that only one of them couples to the magnet, which breaks the mode degeneracy. We reveal the chiral nature of the spectral energy and angular-momentum flow by observing and modeling nonreciprocities of the microwave scattering matrix.
AB - We experimentally realize circularly polarized unidirectional cavity magnon polaritons in a torus-shaped microwave cavity loaded by a small magnetic sphere. At special positions, the clockwise and counterclockwise modes are circularly polarized, such that only one of them couples to the magnet, which breaks the mode degeneracy. We reveal the chiral nature of the spectral energy and angular-momentum flow by observing and modeling nonreciprocities of the microwave scattering matrix.
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U2 - 10.1103/PhysRevApplied.19.014030
DO - 10.1103/PhysRevApplied.19.014030
M3 - Article
AN - SCOPUS:85146371129
SN - 2331-7019
VL - 19
JO - Physical Review Applied
JF - Physical Review Applied
IS - 1
M1 - 014030
ER -