We present a new optical effect that exchanges angular momentum between light and matter. The matter consists of an optically thick spherical, rigid agglomerate of magneto-optical scatterers placed in a homogeneous magnetic field. The light comes from an unpolarized, coherent central light source. The photon Hall effect induces a spiraling Poynting vector, both inside and outside the medium. Optical orbital angular momentum leaks out and induces a torque proportional to the injection power of the source and the photon Hall angle.

中文翻译：

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扩散磁光介质对角动量的光子霍尔风车辐射

我们提出了一种新的光学效应，可以在光和物质之间交换角动量。该物质由置于均匀磁场中的光学厚度的球形，刚性的磁光散射团块组成。光线来自非偏振，相干的中央光源。光子霍尔效应在介质的内部和外部都引起螺旋形的坡印廷矢量。光学轨道角动量会泄漏出去，并产生与光源的注入功率和光子霍尔角成比例的转矩。