Nonreciprocity and Unidirectional Invisibility in Cavity Magnonics

Autor:	Wang, Yi-Pu, Rao, J. W., Yang, Y., Xu, Peng-Chao, Gui, Y. S., Yao, B. M., You, J. Q., Hu, C. -M.
Rok vydání:	2019
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.123.127202
Popis:	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. Comment: 6 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1908.07907 Zobrazit plný text záznamu View this record from Arxiv