Work

Interplay between the coherent and dissipative cavity–magnon couplings in a nearly closed cavity

Year: 2026

Type: article

Abstract: In an electromagnetic resonant cavity containing a magnetic element, the cavity and magnon modes can establish a dissipative-type coupling by their mutual coupling to a third, highly dissipative mode. This dissipative coupling has been predominantly observed in semi-open cavities coupled to traveling waves. Here, we show that contrary to common expectations, even in typical nearly closed cavities, both coherent and dissipative couplings exist and interplay to determine the behaviors of cavity and magnon modes. Furthermore, their different positional dependences allow one to manipulate their interplay by changing the location of the magnon system inside the cavity. This work significantly broadens the scope of systems in which dissipative coupling can be realized and manipulated.

Source: AIP Advances

DOI: 10.1063/5.0321182

Author: Kaixiang Zhang

Institution: University of Science and Technology of China

Language: English

Topic: Mechanical and Optical Resonators

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,350

Funder: National Natural Science Foundation of China