Magnomechanics in suspended magnetic beams

Kansanen, Kalle S. U.; Tassi, Camillo; Mishra, Harshad; Sillanpää, Mika; Heikkilä, Tero T.

doi:10.1103/physrevb.104.214416

Cited by 12 publications

(26 citation statements)

References 49 publications

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“…This is the case for the CMM system using other ferromagnetic materials, e.g. CoFeB [59], which exhibits much stronger magnetostriction but also much larger magnon dissipation. As for mechanical amplification, phonon laser has also been theoretically studied [60][61][62][63][64], e.g.…”

Section: Magnomechanical Dynamical Backaction: Mechanical Cooling And...mentioning

confidence: 87%

“…This nonlinear coupling is termed as the magnon-phonon cross-Kerr nonlinearity [26], which originates from the magnetoelastic coupling by including the second-order terms in the nonlinear strain tensor [59,67]…”

Section: Magnomechanical Cross-kerr Nonlinearity and Mechanical Bista...mentioning

confidence: 99%

“…One may consider using other ferromagnetic materials, e.g. CoFeB [59], which exhibit stronger magnetostriction but also significantly increased magnon dissipation. This may end up with a reduced magnomechanical cooperativity and thus may not be an effective means.…”

Section: Strong-coupling Cmm: Polariton-mechanics Normal-mode Splittingmentioning

confidence: 99%

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Cavity magnomechanics: from classical to quantum

Zuo,

Fan,

Qian

et al. 2024

New J. Phys.

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Hybrid quantum systems based on magnons in magnetic materials have made significant progress in the past decade. They are built based on the couplings of magnons with microwave photons, optical photons, vibration phonons, and superconducting qubits. In particular, the interactions among magnons, microwave cavity photons, and vibration phonons form the system of cavity magnomechanics (CMM), which lies in the interdisciplinary field of cavity QED, magnonics, quantum optics, and quantum information. Here, we review the experimental and theoretical progress of this emerging field. We first introduce the underlying theories of the magnomechanical coupling, and then some representative classical phenomena that have been experimentally observed, including magnomechanically induced transparency, magnomechanical dynamical backaction, magnon-phonon cross-Kerr nonlinearity, etc. We also discuss a number of theoretical proposals, which show the potential of the CMM system for preparing different kinds of quantum states of magnons, phonons, and photons, and hybrid systems combining magnomechanics and optomechanics and relevant quantum protocols based on them. Finally, we summarize this review and provide an outlook for the future research directions in this field.

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Section: Magnomechanical Dynamical Backaction: Mechanical Cooling And...mentioning

confidence: 87%

Section: Magnomechanical Cross-kerr Nonlinearity and Mechanical Bista...mentioning

confidence: 99%

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Cavity magnomechanics: from classical to quantum

Zuo,

Fan,

Qian

et al. 2024

New J. Phys.

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“…In all of the above theoretical and experimental studies , the resolved sidebands are assumed, which is well satisfied for ferrimagnetic yttrium iron garnet (YIG), because it has a very low magnon damping rate. However, for some ferromagnetic materials, e.g., CoFeB [46], though the magnomechanical coupling strength can be much stronger, the magnon damping is much larger, entering the unresolved-sideband regime, and thus the conventional sideband-cooling protocols become inefficient. Therefore, providing efficient cooling schemes for magnomechanical systems with unresolved sidebands are highly needed.…”

Section: Introductionmentioning

confidence: 99%

Magnon squeezing enhanced ground-state cooling in cavity magnomechanics

Asjad¹,

Li²,

Zhu³

et al. 2022

Preprint

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Cavity magnomechanics has recently become a new platform for studying macroscopic quantum phenomena. The magnetostriction induced vibration mode of a large-size ferromagnet or ferrimagnet reaching its ground state represents a genuine macroscopic quantum state. Here we study the ground-state cooling of the mechanical vibration mode in a cavity magnomechanical system, and focus on the role of magnon squeezing in improving the cooling efficiency. We find that the magnon squeezing can significantly and even completely suppress the magnomechanical Stokes scattering. It thus becomes particularly useful in realizing ground-state cooling in the unresolved-sideband regime, where the conventional sideband cooling protocols become inefficient. We also find that the coupling to the microwave cavity plays only an adverse effect in mechanical cooling. This makes essentially the two-mode magnomechanical system (without involving the microwave cavity) a preferred system for cooling the mechanical motion, in which the magnon mode is established by a uniform bias magnetic field and a microwave drive field.

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“…where K m is the magnon self-Kerr coefficient, and K cross is the magnon-phonon cross-Kerr coefficient. The magnon self-Kerr effect is caused by the magnetocrystalline anisotropy [58,59], and the cross-Kerr nonlinearity originates from the magnetoelastic coupling by including the second-order terms in the strain tensor [61,62],…”

mentioning

confidence: 99%

Mechanical Bistability in Kerr-modified Cavity Magnomechanics

Shen¹,

Li²,

Fan³

et al. 2022

Preprint

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Bistable mechanical vibration is observed in a cavity magnomechanical system, which consists of a microwave cavity mode, a magnon mode, and a mechanical vibration mode of a ferrimagnetic yttrium-iron-garnet (YIG) sphere. The bistability manifests itself in both the mechanical frequency and linewidth under a strong microwave drive field, which simultaneously activates three different kinds of nonlinearities, namely, magnetostriction, magnon self-Kerr, and magnon-phonon cross-Kerr nonlinearities. The magnon-phonon cross-Kerr nonlinearity is first predicted and measured in magnomechanics. The system enters a regime where Kerrtype nonlinearities strongly modify the conventional cavity magnomechanics that possesses only a dispersive magnomechanical coupling. Three different kinds of nonlinearities are identified and distinguished in the experiment. Our work demonstrates a new mechanism for achieving mechanical bistability by combining magnetostriction and Kerr-type nonlinearities, and indicates that such Kerr-modified cavity magnomechanics provides a unique platform for studying many distinct nonlinearities in a single experiment.

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Magnomechanics in suspended magnetic beams

Cited by 12 publications

References 49 publications

Cavity magnomechanics: from classical to quantum

Cavity magnomechanics: from classical to quantum

Magnon squeezing enhanced ground-state cooling in cavity magnomechanics

Mechanical Bistability in Kerr-modified Cavity Magnomechanics

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