论文标题
共同方向波导耦合器的传播振荡
Propagative oscillations in co-directional polariton waveguide couplers
论文作者
论文摘要
我们报告了为研究和故意指导凝结物相的新型激子 - 孔子路由设备。在共同方向耦合装置中，通过部分蚀刻的截面连接了两个波导，该部分促进了相邻通道的可调耦合。每种波导中两个宏观波形的这种渐态耦合在冷凝水的真实空间振荡中揭示了自己。到目前为止，这种类似约瑟夫森的振荡仅在耦合极化陷阱中观察到。在这里，我们在基于可控的，基于波导的设计中报告了类似的耦合行为。通过控制间隙宽度，通道长度或传播能量，可以选择Polariton流的出口端口。这种共同方向的极化设备是一种被动且可扩展的耦合器元素，可以在紧凑的下一代逻辑体系结构中使用。
We report on novel exciton-polariton routing devices created to study and purposely guide light-matter particles in their condensate phase. In a co-directional coupling device, two waveguides are connected by a partially etched section which facilitates tunable coupling of the adjacent channels. This evanescent coupling of the two macroscopic wavefunctions in each waveguide reveals itself in real space oscillations of the condensate. This Josephson-like oscillation has only been observed in coupled polariton traps so far. Here, we report on a similar coupling behavior in a controllable, propagative waveguide-based design. By controlling the gap width, channel length or the propagation energy, the exit port of the polariton flow can be chosen. This co-directional polariton device is a passive and scalable coupler element that can serve in compact, next generation logic architectures.
