Abstract

Quantum manipulation of mechanical resonators has been widely applied in fundamental physics and quantum information processing. Among them, cooling a mechanical system to its quantum ground state is regarded as a key step. In this work, we propose a scheme that can realize ground-state cooling of the resonator in a cavity magnomechanical system. The system consists of a microwave cavity and a small ferromagnetic sphere, in which phonon–magnon coupling and cavity photon–magnon coupling can be achieved via magnetostrictive interaction and magnetic dipole interaction, respectively. Within experimentally feasible parameters, we demonstrate that the extra magnetic damping can be utilized to achieve ground-state cooling of the magnomechanical resonator via an effective dark-mode interaction. The magnomechanical cooling mainly comes from the magnon–phonon interaction terms. We further illustrate that optimal cooling can be obtained by adjusting the external magnetic field.

© 2020 Optical Society of America

Enhancing the ground-state cooling of the magnomechanical mode in a hybrid dual-cavity magnonic system

Hui Li, Ming Song Ding, and Chong Li
J. Opt. Soc. Am. B 41(3) 720-727 (2024)

Magnon squeezing enhanced entanglement in a cavity magnomechanical system

Ming-Song Ding, Li Zheng, Ying Shi, and Yu-Jie Liu
J. Opt. Soc. Am. B 39(10) 2665-2669 (2022)

Generation and transfer of squeezed states in a cavity magnomechanical system by two-tone microwave fields

Wei Zhang, Dong-Yang Wang, Cheng-Hua Bai, Tie Wang, Shou Zhang, and Hong-Fu Wang
Opt. Express 29(8) 11773-11783 (2021)

Asymmetric transmission and entanglement in a double-cavity magnomechanical system

Zhi-Bo Yang, Ying Ming, Rong-Can Yang, and Hong-Yu Liu
J. Opt. Soc. Am. B 40(4) 822-829 (2023)

Generation of higher-order sidebands based on the magnetostrictive interaction in a hybrid cavity electro–opto–magnomechanical system

Yan Wei and Bao Wang
J. Opt. Soc. Am. B 37(2) 218-226 (2020)