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arXiv · 2006.01223

Strong magnon-photon coupling within a tunable cryogenic microwave cavity

C. A. Potts·J. P. Davis
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Abstract

The ability to achieve strong-coupling has made cavity-magnon systems an exciting platform for the development of hybrid quantum systems and the investigation of fundamental problems in physics. Unfortunately, current experimental realizations are constrained to operate at a single frequency, defined by the geometry of the microwave cavity. In this article we realize a highly-tunable, cryogenic, microwave cavity strongly coupled to magnetic spins. The cavity can be tuned in situ by up to 1.5 GHz, approximately 15% of its original 10 GHz resonance frequency. Moreover, this system remains within the strong-coupling regime at all frequencies with a cooperativity of approximately 800.

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C. A. Potts, J. P. Davis. 2020-06-01. Strong magnon-photon coupling within a tunable cryogenic microwave cavity. https://doi.org/10.1063/5.0015660

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