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arXiv · 1506.05631

Dispersive read-out of ferromagnetic resonance for strongly coupled magnons and microwave photons

J. A. Haigh·N. J. Lambert·A. C. Doherty·A. J. Ferguson
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Abstract

We demonstrate the dispersive measurement of ferromagnetic resonance in a yttrium iron garnet sphere embedded within a microwave cavity. The reduction in the longitudinal magnetization at resonance is measured as a frequency shift in the cavity mode coupled to the sphere. This measurement is a result of the intrinsic non-linearity in magnetization dynamics, indicating a promising route towards experiments in magnon cavity quantum electro-dynamics.

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J. A. Haigh, N. J. Lambert, A. C. Doherty, A. J. Ferguson. 2015-06-18. Dispersive read-out of ferromagnetic resonance for strongly coupled magnons and microwave photons. https://doi.org/10.1103/physrevb.91.104410

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