Details

Autor(en) / Beteiligte

• Wang, Yi-Pu
• Rao, J. W.
• Yang, Y.
• Xu, Peng-Chao
• Gui, Y. S.
• Yao, B. M.
• You, J. Q.
• Hu, C.-M.

Titel

Nonreciprocity and Unidirectional Invisibility in Cavity Magnonics

Ist Teil von

• Physical review letters, 2019-09, Vol.123 (12), p.1-127202, Article 127202

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2019

Quelle

American Physical Society

Beschreibungen/Notizen

• We reveal the cooperative effect of coherent and dissipative magnon-photon couplings in an open cavity magnonic system, which leads to nonreciprocity with a considerably large isolation ratio and flexible controllability. Furthermore, we discover unidirectional invisibility for microwave propagation, which appears at the zero-damping condition for hybrid magnon-photon modes. A simple model is developed to capture the generic physics of the interference between coherent and dissipative couplings, which accurately reproduces the observations over a broad range of parameters. This general scheme could inspire methods to achieve nonreciprocity in other systems.