Cavity-mediated dissipative coupling of distant magnetic moments: Theory and experiment
| Autor: | Xiaofeng Jin, J. W. Rao, Peng-Chao Xu, Can-Ming Hu, Yongsheng Gui |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Work (thermodynamics) Level repulsion Condensed Matter - Mesoscale and Nanoscale Physics Magnetic moment Magnon FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Coupling (physics) Quantum electrodynamics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Dissipative system Physics::Accelerator Physics Direct coupling 010306 general physics 0210 nano-technology Microwave cavity |
| Zdroj: | Physical Review B. 100 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.100.094415 |
| Popis: | We investigate long-range coherent and dissipative coupling between two spatially separated magnets while both are coupled to a microwave cavity in the strong coupling limit. A careful examination of the system shows that the indirect interaction between two magnon modes is dependent on their individual mechanisms of direct coupling to the cavity. If both magnon modes share the same form of coupling to the cavity (either coherent or dissipative), then the indirect coupling between them will produce level repulsion. Conversely, if the magnon modes have different forms of coupling to the cavity (one coherent and one dissipative), then their indirect coupling will produce level attraction. We further demonstrate the cavity-mediated nature of the indirect interaction through investigating the dependence of the indirect coupling strength on the frequency detuning between the magnon and cavity modes. Our work theoretically and experimentally explores indirect cavity mediated interactions in systems exhibiting both coherent and dissipative coupling, which opens an avenue for controlling and utilizing light-matter interactions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|