Ground-state cooling of a magnomechanical resonator induced by magnetic damping

被引：52

作者：

Ding, Ming-Song ^{[1
]}

Zheng, Li ^{[2
]}

Li, Chong ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China

[2] Dalian Polytech Univ, Sci & Engn Coll, Dalian 116034, Peoples R China

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2020年 / 37卷 / 03期

基金：

中国国家自然科学基金;

关键词：

RESOLVED-SIDE-BAND; INDUCED TRANSPARENCY; QUANTUM; ENTANGLEMENT; SYSTEM;

D O I：

10.1364/JOSAB.380755

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2020 Optical Society of America

引用

页码：627 / 634

页数：8

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