title: Cavity magnomechanics.
abstract: A dielectric body couples with electromagnetic fields through radiation pressure and electrostrictive forces, which mediate phonon-photon coupling in cavity optomechanics. In a magnetic medium, according to the Korteweg-Helmholtz formula, which describes the electromagnetic force density acting on a medium, magneostrictive forces should arise and lead to phonon-magnon interaction. We report such a coupled phonon-magnon system based on ferrimagnetic spheres, which we term as cavity magnomechanics, by analogy to cavity optomechanics. Coherent phonon-magnon interactions, including electromagnetically induced transparency and absorption, are demonstrated. Because of the strong hybridization of magnon and microwave photon modes and their high tunability, our platform exhibits new features including parametric amplification of magnons and phonons, triple-resonant photon-magnon-phonon coupling, and phonon lasing. Our work demonstrates the fundamental principle of cavity magnomechanics and its application as a new information transduction platform based on coherent coupling between photons, phonons, and magnons.
authors.affiliation: Department of Electrical Engineering, Yale University, New Haven, CT 06511, USA.
authors.forename: Xufeng
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Electrical Engineering, Yale University, New Haven, CT 06511, USA.; Department of Applied Physics, Yale University, New Haven, CT 06511, USA.
authors.forename: Chang-Ling
authors.initials: CL
authors.lastname: Zou
authors.affiliation: Department of Applied Physics, Yale University, New Haven, CT 06511, USA.
authors.forename: Liang
authors.identifier: 0000-0002-0000-9342
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Department of Electrical Engineering, Yale University, New Haven, CT 06511, USA.; Department of Applied Physics, Yale University, New Haven, CT 06511, USA.
authors.forename: Hong X
authors.initials: HX
authors.lastname: Tang
mesh_terms: D000465:Algorithms; D004574:Electromagnetic Fields; D006801:Humans; D008280:Magnetics; D008962:Models, Theoretical; D060739:Phonons; D017785:Photons
keywords: coherence; magnomechanical interaction; magnon; phonon