Cavity Optomagnonics with Spin-Orbit Coupled Photons
Cavity Optomagnonics with Spin-Orbit Coupled Photons
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DOI：
10.1103/physrevlett.116.223601
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发表时间：
2016-06-02
影响因子：
8.6
通讯作者：
Nakamura, Y.
中科院分区：
文献类型：
--
作者：
Osada, A.;Hisatomi, R.;Nakamura, Y.
我们实验实现了一个系统的腔光磁，铁磁材料的球体支持回音壁模式（WGM）的光子和磁振子的静磁模式。我们观察到显着的非互易性和不对称的边带信号产生的磁振子诱导的布里渊散射光。WGM光子的自旋-轨道耦合性质、它们的几何双折射和磁振子动力学中的时间反演对称性破缺在散射过程中施加了角动量选择规则，并解释了所观察到的现象。该系统的独特功能可能会在量子光学和自旋电子学的交叉点上找到有趣的应用。
We experimentally implement a system of cavity optomagnonics, where a sphere of ferromagnetic material supports whispering gallery modes (WGMs) for photons and the magnetostatic mode for magnons. We observe pronounced nonreciprocity and asymmetry in the sideband signals generated by the magnon-induced Brillouin scattering of light. The spin-orbit coupled nature of the WGM photons, their geometrical birefringence, and the time-reversal symmetry breaking in the magnon dynamics impose the angular-momentum selection rules in the scattering process and account for the observed phenomena. The unique features of the system may find interesting applications at the crossroad between quantum optics and spintronics.