论文标题
带有嵌入式量子点的微柱腔系统的极化特性的光学调整
Opto-Mechanical Tuning of the Polarization Properties of Micropillar Cavity Systems with embedded Quantum Dots
论文作者
论文摘要
应变调整是一种吸引人的工具，可调节固态量子发射器的基本光学特性。特别是，可以使用混合半导体 - pizoeleclectric设备来调整量子点状态的波长和精细结构。在这里，我们展示了施加的外部应力如何直接影响耦合的INAS量子点 - 微粒腔腔系统的极化特性。在我们的实验中，我们发现我们可以通过大约60 $μ\ text {ev} $可逆地调整基本微腔模式的各向异性极化分裂。我们讨论了这种调整机制的起源，该机制是由弹性变形与微骨中光弹性效应之间的相互作用引起的。最后，我们利用这种效果来通过极化 - 动脉粥样硬化percell效应来调整量子点极化光学。我们的工作为光机械和可逆调整的光构成固态系统的极化和自旋特性铺平了道路。
Strain tuning emerged as an appealing tool to tune fundamental optical properties of solid state quantum emitters. In particular, the wavelength and fine structure of quantum dot states could be tuned using hybrid semiconductor-piezoelectric devices. Here, we show how an applied external stress can directly impact the polarization properties of coupled InAs quantum dot-micropillar cavity systems. In our experiment, we find that we can reversibly tune the anisotropic polarization splitting of the fundamental microcavity mode by approximately 60 $μ\text{eV}$. We discuss the origin of this tuning mechanism, which arises from an interplay between elastic deformation and the photoelastic effect in our micropillar. Finally, we exploit this effect to tune the quantum dot polarization opto-mechanically via the polarization-anisotropic Purcell effect. Our work paves the way for optomechanical and reversible tuning of the polarization and spin properties of light-matter coupled solid state systems.
