We report measurements made at millikelvin temperatures of a superconducting coplanar
waveguide resonator (CPWR) coupled to a sphere of yttrium-iron garnet. Systems …

We demonstrate microwave-mediated distant magnon-magnon coupling on a
superconducting circuit platform, incorporating chip-mounted single-crystal Y 3 Fe 5 O 12 …

Coherent coupling between spin-wave excitations (magnons) and microwave photons in a
cavity may disclose new paths to unconventional phenomena as well as novel applications …

Resonant photon modes of a 5-mm-diameter yttrium iron garnet (YIG) sphere loaded in a
cylindrical cavity in the 10–30-GHz frequency range are characterized as a function of …

Collective magnetic excitation modes, magnons, can be coherently coupled to microwave
photons in the single excitation limit. This allows for access to quantum properties of …

We demonstrate the dispersive measurement of ferromagnetic resonance in a yttrium iron
garnet sphere embedded within a microwave cavity. The reduction in the longitudinal …

The spin resonance of electrons can be coupled to a microwave cavity mode to obtain a
photon-magnon hybrid system. These quantum systems are widely studied for both …

We demonstrate large normal-mode splitting between a magnetostatic mode (the Kittel
mode) in a ferromagnetic sphere of yttrium iron garnet and a microwave cavity mode. Strong …

Hybridizing collective spin excitations and a cavity with high cooperativity provides a new
research subject in the field of cavity quantum electrodynamics and can also have potential …

Using a submillimeter-sized YIG (yttrium-iron-garnet) sphere mounted in a magnetic-field-
focusing cavity, we demonstrate an ultrahigh cooperativity of 1 0 5 between magnon and …