Bistability of Cavity Magnon Polaritons

Physical Review Letters
Yi-Pu WangJ Q You

Abstract

We report the first observation of the magnon-polariton bistability in a cavity magnonics system consisting of cavity photons strongly interacting with the magnons in a small yttrium iron garnet (YIG) sphere. The bistable behaviors emerged as sharp frequency switchings of the cavity magnon polaritons (CMPs) and related to the transition between states with large and small numbers of polaritons. In our experiment, we align, respectively, the [100] and [110] crystallographic axes of the YIG sphere parallel to the static magnetic field and find very different bistable behaviors (e.g., clockwise and counter-clockwise hysteresis loops) in these two cases. The experimental results are well fitted and explained as being due to the Kerr nonlinearity with either a positive or negative coefficient. Moreover, when the magnetic field is tuned away from the anticrossing point of CMPs, we observe simultaneous bistability of both magnons and cavity photons by applying a drive field on the lower branch.

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Citations

Aug 19, 2018·Optics Express·Bao WangYing Wu
Feb 1, 2019·Optics Letters·Zeng-Xing LiuYing Wu
Aug 2, 2018·Optics Letters·Zeng-Xing LiuYing Wu
Nov 2, 2019·Scientific Reports·Ming-Song DingChong Li
Feb 20, 2020·Physical Review. E·Wen-Ling XuChuan Wang
Jun 19, 2020·Optics Express·Fen ZouJie-Qiao Liao
Oct 13, 2018·Physical Review Letters·M HarderC-M Hu
Oct 27, 2018·Physical Review Letters·Ran HuangHui Jing
Dec 24, 2019·Physical Review Letters·Weichao YuJiang Xiao
Oct 2, 2020·Optics Letters·Zeng-Xing Liu, Hao Xiong
Dec 1, 2018·Physical Review Letters·Jie LiG S Agarwal
Oct 2, 2019·Physical Review Letters·Justin T Hou, Luqiao Liu
Feb 23, 2020·Physical Review Letters·H Y YuanMan-Hong Yung
Jul 24, 2020·Physical Review Letters·Jaechul ShimKyung-Jin Lee
Oct 30, 2020·Optics Express·Zhi-Bo YangRong-Can Yang

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