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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Strong Coupling between Propagating Spin Waves and Microwave Photons in a Superconducting Resonator
Yi Li1, Jinho Lim2,3, Xingzhi Wang2,3
1Argonne National Laboratory, Materials Science Division, Lemont, Illinois 60439, USA.
Abstract:
We demonstrate strong coupling between propagating spin-wave modes and microwave photons in superconducting resonator-magnetic thin film hybrid circuits. By fabricating the resonator directly on yttrium iron garnet thin films grown on rare-earth-free Y_{3}Sc_{2}Ga_{3}O_{12} substrates, we achieve strong coupling of both Damon-Eshbach and backward-volume spin-wave modes to the resonator, with coupling strengths exceeding both the magnon and photon damping rates. Furthermore, we observe nonreciprocal spin-wave radiation of the hybrid magnonic mode in the Damon-Eshbach configuration, highlighting the potential for incorporating intrinsic spin-wave nonreciprocity into hybrid magnonic systems. These results open new avenues for integrating spin-wave magnonics with cavity magnonics and for harnessing spin waves for potential applications in quantum information science.
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