Microwave

Quantum mechanics

Magnetic field

Magnetization

Ferromagnetism

Yttrium iron garnet

Phonon

Spins

Magnon

Polariton

Photon

Parametric oscillator

Physics

Coherent states

Condensed matter physics

Quantum

Ferrimagnetism

Microwave cavity

Squeezed coherent state

Physical review. A/Physical review, A

A ferrimagnetic yttrium-iron-garnet sphere placed inside a cavity provides a platform for investigating macroscopic quantum phenomena. By exploring the strong coupling between magnons and cavity-polaritons, as well as the magnetostrictive interaction, a scheme to create squeezed states of magnons and phonons is proposed.

Squeezed states of magnons and phonons in cavity magnomechanics