超高频电驱动激子-极化激元光学力学
Electrically driven exciton-polariton optomechanics at super high frequencies
摘要：
极化激元使得激子和光子能够共振耦合到应用相关的超高频（SHF，3-30 GHz）域中的振动。我们介绍了一种新的平台相干光力学的基础上的激子极化激元和电驱动的超高频纵向声学声子的耦合限制在一个平面布拉格微腔的间隔区。微腔平台的固有特性是声子通过在样品边界处的反射的反馈，这使得频率x品质因数乘积超过10^14 Hz以及光学跃迁能量的巨大调制幅度（高达8 meV）。我们表明，调制占主导地位的激子极化激元分量的声子诱导的能量位移，从而导致弱和强的光-物质耦合的制度之间的振荡过渡。这些结果为基于极化激元的相干光力学在非绝热、边带分辨的相干控制机制中的应用开辟了道路。
英文摘要：
Polaritons enable the resonant coupling of excitons and photons to vibrations in the application-relevant super high frequency (SHF, 3-30 GHz) domain. We introduce a novel platform for coherent optomechanics based on the coupling of exciton-polaritons and electrically driven SHF longitudinal acoustic phonons confined within the spacer region of a planar Bragg microcavity. An intrinsic property of the microcavity platform is the back-feeding of phonons via reflections at the sample boundaries, which enables frequency x quality factors products exceeding 10^14 Hz as well as huge modulation amplitudes of the optical transition energies (up to 8 meV). We show that the modulation is dominated by the phonon-induced energy shifts of the excitonic polariton component, thus leading to an oscillatory transition between the regimes of weak and strong light-matter coupling. These results open the way for polariton-based coherent optomechanics in the non-adiabatic, side-band-resolved regime of coherent control.
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