4.7 Article

Dynamical Backaction Magnomechanics

Journal

PHYSICAL REVIEW X
Volume 11, Issue 3, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.11.031053

Keywords

Magnetism; Mechanics; Optics

Funding

  1. University of Alberta
  2. Natural Sciences and Engineering Research Council, Canada [RGPIN-04523-16, CREATE-495446-17]
  3. Alberta Quantum Major Innovation Fund
  4. Max Planck Society
  5. Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [429529648TRR 306 QuCoLiMa]

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Dynamical backaction from radiation pressure in optomechanical systems can manipulate mechanical vibrations, such as cooling resonators, driving phonon lasing, generating entangled states, and observing the optical-spring effect. In some magnetic materials, magnon-induced dynamical backaction interacts with mechanical vibrations. These effects may play a crucial role in future experimental work.
Dynamical backaction resulting from radiation pressure forces in optomechanical systems has proven to be a versatile tool for manipulating mechanical vibrations. Notably, dynamical backaction has resulted in the cooling of a mechanical resonator to its ground state, driving phonon lasing, the generation of entangled states, and observation of the optical-spring effect. In certain magnetic materials, mechanical vibrations can interact with magnetic excitations (magnons) via the magnetostrictive interaction, resulting in an analogous magnon-induced dynamical backaction. In this article, we directly observe the impact of magnon-induced dynamical backaction on a spherical magnetic sample's mechanical vibrations. Moreover, dynamical backaction effects play a crucial role in many recent theoretical proposals; thus, our work provides the foundation for future experimental work pursuing many of these theoretical proposals.Y

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