Magnetic control over the zitterbewegung of exciton–polaritons
Magnetic control over the zitterbewegung of exciton–polaritons
复制标题
对激子极化激元的磁性控制
DOI：
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发表时间：
2020
影响因子：
3.3
通讯作者：
A. Kavokin
中科院分区：
文献类型：
--
作者：
E. S. Sedov;I. Sedova;S. Arakelian;A. Kavokin
理论上，传播粒子轨迹的颤动所产生的zitterbewegung效应可以在各种以分裂动能分散分支为特征的物理系统中找到。然而，在大多数物质系统中，这种效应太弱而无法观察到。特别设计的半导体异质结构表示具有嵌入式量子威尔斯的光学微腔，允许观察激子-极化激元的zitterbewegung，激子-极化激元是与量子威尔斯中的激子强烈杂交的光学腔模式。在这里，我们表明，在微腔的平面中施加的外部磁场放大了这种效果，并允许调谐的振幅和周期的极化激元轨迹的振荡，从而成为一个方便的控制工具。这些结果为基于自旋轨道效应实现弹道极化激元晶体管铺平了道路，在概念上类似于Datta和Das晶体管。
The effect of the zitterbewegung consisting in trembling of trajectory of propagating particles may, in principle, be found in a variety of physical systems characterized by split kinetic energy dispersion branches. However, in a majority of material systems the effect is too weak to be observable. Specially designed semiconductor heterostructures representing optical microcavities with embedded quantum wells allow observing the zitterbewegung of exciton–polaritons that are optical cavity modes strongly hybridized with excitons in quantum wells. Here we show that external magnetic fields applied in the plane of the microcavity amplify this effect and allow for tuning the amplitude and the period of oscillations of polariton trajectories, thus being a convenient tool of control. These results pave the way towards realization of ballistic polariton transistors based on the spin–orbit effect, conceptually similar to Datta-and-Das transistors.
DOI：
10.1002/pssb.200983188
发表时间：
2010
期刊：
physica status solidi (b)
影响因子：
--
作者：
Loginov D
通讯作者：
Loginov D