Coplanar cavity for strong coupling between photons and magnons in van der Waals antiferromagnet
arXiv:2002.00197 · doi:10.1063/5.0029112
Abstract
We investigate the performance of niobium nitride superconducting coplanar waveguide resonators towards hybrid quantum devices with magnon-photon coupling. We find internal quality factors ~ 20000 at 20 mK base temperature, in zero magnetic field. We find that by reducing film thickness below 100 nm internal quality factor greater than 1000 can be maintained up to parallel magnetic field of ~ 1 T and perpendicular magnetic field of ~ 100 mT. We further demonstrate strong coupling of microwave photons in these resonators, with magnons in chromium trichloride, a van der Waals antiferromagnet, which shows that these cavities serve as a good platform for studying magnon-photon coupling in 2D magnonics based hybrid quantum systems. We demonstrate strong magnon-photon coupling for both optical and acoustic magnon modes of an antiferromagnet.
15 pages, 14 figures
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Cited by in corpus (9)
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- Spin Dynamics in van der Waals Magnetic Systems
- Cavity magnon-polaritons in cuprate parent compounds
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