Magnetic-optical transitions induced by twisted light in quantum dots
Magnetic-optical transitions induced by twisted light in quantum dots
复制标题
量子点中扭曲光引起的磁光跃迁
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
T. Kuhn
中科院分区：
文献类型：
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作者：
G. Quinteiro;D. Reiter;T. Kuhn
理论上已经预测，携带轨道角动量的光，或扭曲光，可以被调谐为在光学频率处具有强磁场分量。在这里，我们考虑这些特殊的领域与半导体量子点的相互作用，并表明磁相互作用的结果在新类型的光学跃迁。特别是，这种扭曲光的单个脉冲可以驱动光孔到导带的跃迁，这是使用常规高斯光束或甚至具有主导电场的扭曲光难以产生的。
It has been theoretically predicted that light carrying orbital angular momentum, or twisted light, can be tuned to have a strong magnetic-field component at optical frequencies. We here consider the interaction of these peculiar fields with a semiconductor quantum dot and show that the magnetic interaction results in new types of optical transitions. In particular, a single pulse of such twisted light can drive light-hole-to-conduction band transitions that are cumbersome to produce using conventional Gaussian beams or even twisted light with dominant electric fields.