Microwave analog of Stern-Gerlach effects using nonuniform chiral metamaterials
Microwave analog of Stern-Gerlach effects using nonuniform chiral metamaterials
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使用非均匀手性超材料对斯特恩-格拉赫效应进行微波模拟
DOI：
10.1103/physrevb.96.165425
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发表时间：
2017
影响因子：
3.7
通讯作者：
Ueda Tetsuya
中科院分区：
文献类型：
--
作者：
Tomita Satoshi;Sawada Kei;Nagai Shotaro;Sanada Atsushi;Hisamoto Nobuyuki;Ueda Tetsuya
本研究透过非均匀手征超颖材料观察到圆极化对微波波束分裂的影响。利用在微波频率下表现出光学活性的手征元原子，构造了折射率渐变的非均匀手征超材料。由非均匀手征超材料的微波散射远场图案展示了微波的偏转，其在垂直于折射率梯度的方向上传输。此外，具有相反“光自旋”的圆偏振微波在非均匀手征超材料中分道扬镳。这种现象是电子的Stern-Gerlach效应的光学模拟。
This study observes microwave beam splitting dependent on circular polarizations through nonuniform chiral metamaterials. Nonuniform chiral metamaterials with a gradation in refractive index are constructed using chiral meta-atoms that exhibit optical activities at microwave frequencies. Microwave scattering far-field patterns by the nonuniform chiral metamaterials demonstrate a deflection of microwaves, which transmit in a direction perpendicular to the refractive index gradient. Furthermore, circularly polarized microwaves with opposite “spins of light” go their separate ways in the nonuniform chiral metamaterials. This phenomenon is an optical analog of the Stern-Gerlach effects for electrons.