Dynamical backaction evading magnomechanics

Potts CA, Huang Y, Bittencourt VA, Viola Kusminskiy S, Davis JP (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Physical Review B American Physical Society

Book Volume: 107

Article Number: L140405

Journal Issue: 14

DOI: 10.1103/PhysRevB.107.L140405

Abstract

The interaction between magnons and mechanical vibrations dynamically modifies the properties of the mechanical oscillator, such as its frequency and decay rate. Known as dynamical backaction, this effect is the basis for many theoretical protocols, such as entanglement generation or mechanical ground-state cooling. However, dynamical backaction is also detrimental for specific applications. Here, we demonstrate the implementation of a triple-resonance cavity magnomechanical measurement that fully evades dynamical backaction effects. Through careful engineering, the magnomechanical scattering rate into the hybrid magnon-photon modes can be precisely matched, eliminating dynamical backaction damping. Backaction evasion is confirmed via the measurement of a drive-power-independent mechanical linewidth.

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1 Quantenkooperativität von Licht und Materie - QuCoLiMa

Related research project(s)

Optomagnomechanical arrays (B05) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE) University of Alberta CA Canada (CA)

How to cite

APA:

Potts, C.A., Huang, Y., Bittencourt, V.A., Viola Kusminskiy, S., & Davis, J.P. (2023). Dynamical backaction evading magnomechanics. Physical Review B, 107(14). https://doi.org/10.1103/PhysRevB.107.L140405

MLA:

Potts, C. A., et al. "Dynamical backaction evading magnomechanics." Physical Review B 107.14 (2023).

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