Nonreciprocity and Unidirectional Invisibility in Cavity Magnonics.

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

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

Afiliación

Wang YP; Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2.
Rao JW; Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2.
Yang Y; Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2.
Xu PC; Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2.
Gui YS; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
Yao BM; Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2.
You JQ; State Key Laboratory of Infrared Physics, Chinese Academy of Sciences, Shanghai 200083, People's Republic of China.
Hu CM; Interdisciplinary Center of Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics and State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China.

Phys Rev Lett ; 123(12): 127202, 2019 Sep 20.

Article en En | MEDLINE | ID: mdl-31633946

ABSTRACT

ABSTRACT

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.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article