Effects of the Linear Polarization of Polariton Condensates in Their Propagation in Codirectional Couplers
Effects of the Linear Polarization of Polariton Condensates in Their Propagation in Codirectional Couplers
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DOI：
10.1021/acsphotonics.1c00746
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发表时间：
2021-08-03
期刊：
影响因子：
7
通讯作者：
Vina, L.
中科院分区：
文献类型：
--
作者：
Rozas, Elena;Yulin, Alexey;Vina, L.
我们报告了同向耦合器中极化子凝聚体的线性偏振，该耦合器允许相邻波导之间的渐逝耦合。在凝聚体的形成过程中，极化激元通常会获得随机取向的偏振，然而，我们的结果揭示了线性偏振沿波导传播路径的优先取向。此外，我们在耦合器的输出端观察到与偏振相关的强度振荡，并且我们将线性偏振本征模之间的模式跳动确定为这些振荡的起源。我们的研究结果提供了对极化子凝聚态极化控制的深入了解，为基于自旋的极化子结构的发展铺平了道路，其中凝聚态在宏观距离上传播。
We report on the linear polarization of polariton condensates in a codirectional coupler that allows evanescent coupling between adjacent waveguides. During the condensate's formation, polaritons usually acquire a randomly oriented polarization, however, our results reveal a preferential orientation of the linear polarization along the waveguide propagation path. Furthermore, we observe polarization-dependent intensity oscillations in the output terminal of the coupler, and we identify the mode beating between the linear-polarized eigenmodes as the origin of these oscillations. Our findings provide an insight into the control of the polarization of polariton condensates, paving the way for the development of spin-based polaritonic architectures where condensates propagate over macroscopic distances.