Strong magnon-photon coupling within a tunable cryogenic microwave cavity

C. A. Potts; J. P. Davis

doi:10.1063/5.0015660

Strong magnon-photon coupling within a tunable cryogenic microwave cavity

Applied Physics 2020-07-07 v2 Mesoscale and Nanoscale Physics Instrumentation and Detectors Quantum Physics

Authors: 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.

Keywords

cavity magnonics optical microcavities and photonic crystals circuit quantum electrodynamics

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@article{arxiv.2006.01223,
  title  = {Strong magnon-photon coupling within a tunable cryogenic microwave cavity},
  author = {C. A. Potts and J. P. Davis},
  journal= {arXiv preprint arXiv:2006.01223},
  year   = {2020}
}

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4 pages, 4 figures

Strong magnon-photon coupling within a tunable cryogenic microwave cavity

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