Dynamical Backaction Magnomechanics

Potts, C. A.; Varga, E.; Bittencourt, Victor A. S. V.; Kusminskiy, Silvia Viola; Davis, J. P.

doi:10.1103/physrevx.11.031053

Cited by 111 publications

(117 citation statements)

References 109 publications

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“…Due to the nonlinear nature of the Euler-Bernoulli equation used, if the static deformation was half as large, u m /h = 10, we would find g dm 1 ≈ 0.15 Hz. These couplings are comparable to what was found for the magnomechanical coupling in [19,22] for YIG spheres and somewhat smaller than the optomechanical coupling in our setups (e.g., g ∼ 100 Hz in [8]).…”

Section: Experiments On a Magnetic Beamsupporting

confidence: 88%

“…This is also the regime of experiments in Refs. [19,22] performed with microwave cavities and YIG spheres. However, for many other ferromagnetic materials, it may be expected that ω m < κ.…”

Section: Magnomechanicsmentioning

confidence: 99%

“…Moreover, the separate control over mechanics and magnons opens a perspective to signal transduction. In contrast to recent experiments [19,22], this setup does not require a cavity to hybridize with the magnon mode, lessening the physical size of the magnomechanical system. Also, it does not require any magnetic field gradients as in a few recent theoretical works [20,21]; the fields H 0 and h are here considered to be homogeneous in space.…”

Section: Introductionmentioning

confidence: 96%

“…Recently, the coupling between magnons and phonons has been considered to obtain an interaction similar to that in cavity optomechanics, but with the role of photons now played by magnons [19][20][21][22]. The interaction between magnons and phonons is mediated by the combination of the magnetic shape anisotropy and the magnetoelastic effect which make the frequency of the magnon, i.e., the ferromagnetic resonance (FMR), dependent on the strain.…”

Section: Introductionmentioning

confidence: 99%

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Magnomechanics in suspended magnetic beams

et al. 2021

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Cavity optomechanical systems have become a popular playground for studies of controllable nonlinear interactions between light and motion. Owing to the large speed of light, realizing cavity optomechanics in the microwave frequency range requires cavities up to several mm in size, hence making it hard to embed several of them on the same chip. An alternative scheme with much smaller footprint is provided by magnomechanics, where the electromagnetic cavity is replaced by a magnet undergoing ferromagnetic resonance, and the optomechanical coupling originates from magnetic shape anisotropy. Here, we consider the magnomechanical interaction occurring in a suspended magnetic beam, a scheme in which both magnetic and mechanical modes physically overlap and can also be driven individually. We show that a sizable interaction can be produced if the beam has some initial static deformation, as is often the case due to unequal strains in the constituent materials. We also show how the magnetism affects the magnetomotive detection of the vibrations, and how the magnomechanics interaction can be used in microwave signal amplification. Finally, we discuss experimental progress towards realizing the scheme.

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Section: Experiments On a Magnetic Beamsupporting

confidence: 88%

Section: Magnomechanicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Magnomechanics in suspended magnetic beams

et al. 2021

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“…[ 9–50 ] Many experiments have been carried out by using YIG, which has the high spin density, low damping rate, and the magnon mode in the sample can be flexibly tuned from hundreds megahertz to several gigahertz. The cavity magnonic system has been extended to hybrid system that integrates microwave photons, phonons, [ 19,29,45 ] optical photons [ 17,22–26,47,49 ] and qubits. [ 16,37,38,51 ] It is anticipated that this new frontier has a broad impact on quantum information and hybrid quantum system.…”

Section: Introductionmentioning

confidence: 99%

Auxiliary Mode Mediated Coherent and Complex Couplings in a Cavity Magnonic System

Wang

2022

Annalen der Physik

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Coherent and dissipative couplings are discovered in hybrid systems, which are frequently shown as the level repulsion and level attraction between the coupled modes, respectively. The coherent coupling can come from the direct dipole-dipole interaction or resonance-mediated virtual photon exchange. The dissipative coupling originates from the bath-induced cooperative damping effect. The interplay between these two couplings gives rise to complex coupling, contributing to novel phenomena and applications. In this work, it is studied how coherent and complex couplings can be readily realized and manipulated in a three-mode cavity magnonic system. The three-mode system consists of a two-port cavity, a yttrium iron garnet (YIG) sphere (magnon mode), and a split-ring resonator (auxiliary mode). A tunable split-ring resonator mediates the coupling between the cavity mode and magnon mode. The coupling effect is theoretically analyzed by solving the steady-state equation combined with numerical simulation. By adjusting several system parameters, the coherent and complex couplings mediated by the auxiliary mode are revealed. The study paves the way toward exploiting resonance-and dissipation-induced couplings in hybrid systems.

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Squeezed States of Magnons and Phonons in a Cavity Magnomechanical System with a Microwave Parametric Amplifier

2023

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The cavity magnomechanical system has become a promising platform for preparing macroscopic quantum states. In this work, a scheme for generating the steady‐state quadrature squeezing of the magnon and phonon modes in a cavity magnomechanical system is presented. This scheme uses a degenerate microwave parametric amplifier (PA) inside the microwave cavity. It is found that the squeezing of the cavity mode produced by the PA can be transferred to the magnon mode due to the cavity‐magnon beamsplitter‐like interaction, and the squeezing of the magnon mode can be further transferred to the phonon mode due to the magnon‐phonon beamsplitter‐like interaction induced by driving the magnon mode with a red‐detuned microwave field. The effects of the parametric gain and phase of the PA, the magnon‐cavity coupling strength, the power of the magnon drive, and the temperature of the environment on the squeezing of the magnon and phonon modes have been evaluated. The results show that the squeezing of the magnon and phonon modes is robust against the temperature of the environment.

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Dynamical Backaction Magnomechanics

Cited by 111 publications

References 109 publications

Magnomechanics in suspended magnetic beams

Magnomechanics in suspended magnetic beams

Auxiliary Mode Mediated Coherent and Complex Couplings in a Cavity Magnonic System

Squeezed States of Magnons and Phonons in a Cavity Magnomechanical System with a Microwave Parametric Amplifier

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