Superstrong coupling of a microwave cavity to yttrium iron garnet magnons
By N. Kostylev, Maxim Goryachev, Michael E. Tobar. 2015
156 citations recorded by the source corpus.
Multiple-post reentrant 3D lumped cavity modes have been realized to design the concept of a discrete Whispering Gallery and Fabry-Perot-like Modes for multimode microwave Quantum Electrodynamics experiments. Using the magnon spin-wave resonance of a submillimeter-sized Yttrium-Iron-Garnet sphere at millikelvin temperatures and a four-post cavity, we demonstrate the ultra-strong coupling regime between discrete Whispering Gallery Modes and a magnon resonance with a strength of 1.84 GHz. By increasing the number of posts to eight and arranging them in a D4 symmetry pattern, we expand the mode structure to that of a discrete Fabry-Perot cavity and modify the Free Spectral Range (FSR). We reach the superstrong coupling regime, where spin-photon coupling strength is larger than FSR, with coupling strength in the 1.1 to 1.5 GHz range.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/1c8830f759ab9db9387d32e40fdb31cda85069a1
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Cavity magnonics (2021, background): “…been unearthed, such as magnon dark modes and gradient memory (Zhang et al., 2015), magnon Kerr effect (Wang et al., 2016), ultrastrong coupling (Kostylev et al., 2016), cavity-mediated coherent coupling of magnetic moments (Lambert et al., 2016), cavity-mediated qubit-magnon coupling (Tabuchi…”