用于声二极管的具有合成磁场的声子晶体
Phonoritonic crystals with synthetic magnetic field for acoustic diode
摘要：
我们发展了一个严格的理论框架来描述激光泵浦周期性多量子阱结构中的光-声相互作用，解释了混合声子-极化激元激发，称为声子激元。我们发现，在人工的“坐标能量”空间中，声子呈现出泵浦诱导的合成磁场，这使得左右向波的传输是不同的。传输非互易性允许使用这样的声子晶体与现实的参数作为光学控制的纳米级声学二极管。
英文摘要：
We develop a rigorous theoretical framework to describe light-sound interaction in the laser-pumped periodic multiple-quantum-well structure accounting for the hybrid phonon-polariton excitations, termed as phonoritons. We show that phonoritons exhibit the pumping-induced synthetic magnetic field in the artificial "coordinate-energy" space, that makes transmission of left- and right- going waves different. The transmission nonreciprocity allows to use such phonoritonic crystals with realistic parameters as optically controlled nanoscale acoustic diodes.
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