Meterscale Strong Coupling between Magnons and Photons

被引：4

作者：

Rao, Jinwei ^{[1
]}

Wang, C. Y. ^{[1
]}

Yao, Bimu ^{[1
,2
]}

Chen, Z. J. ^{[1
]}

Zhao, K. X. ^{[1
]}

Lu, Wei ^{[1
,2
]}

机构：

[1] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Tech Phys, State Key Lab Infrared Phys, Shanghai 200083, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 131卷 / 10期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

QUANTUM; ENTANGLEMENT;

D O I：

10.1103/PhysRevLett.131.106702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally realize a meterscale strong coupling effect between magnons and photons at room temperature, with a coherent coupling of similar to 20 m and a dissipative coupling of similar to 7.6 m. To this end, we integrate a saturable gain into a microwave cavity and then couple this active cavity to a magnon mode via a long coaxial cable. The gain compensates for the cavity dissipation, but preserves the cavity radiation that mediates the indirect photon-magnon coupling. It thus enables the long-range strong photon-magnon coupling. With full access to traveling waves, we demonstrate a remote control of photon-magnon coupling by modulating the phase and amplitude of traveling waves, rather than reconfiguring subsystems themselves. Our method for realizing long-range strong coupling in cavity magnonics provides a general idea for other physical systems. Our experimental achievements may promote the construction of information networks based on cavity magnonics.

引用

页数：7

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