论文标题
通过定制的抽水
Enhanced coupling between ballistic exciton-polariton condensates through tailored pumping
论文作者
论文摘要
我们提出了一种基于可用空间光调节器技术的半导体微博中，在半导体微腔中增强弹道激子 - 孔子冷凝物之间的空间耦合的方法。我们的方法通过数值求解广义的Gross-Pitaevskii模型验证，利用了由局部非共振光激发驱动的激子 - 果龙凝结的强非平衡性质。从高斯到多边形形状的激发光束曲线从激发的冷凝物中折射和聚焦的径向流，可将其引向最近的邻居。我们的方法可用于降低实现极化系统凝结所需的阈值功率，并增加扩展系统中的空间相干性，从而为创造极大的光量子流体铺平了道路。
We propose a method to enhance the spatial coupling between ballistic exciton-polariton condensates in a semiconductor microcavity based on available spatial light modulator technologies. Our method, verified by numerically solving a generalized Gross-Pitaevskii model, exploits the strong nonequilibrium nature of exciton-polariton condensation driven by localized nonresonant optical excitation. Tailoring the excitation beam profile from a Gaussian into a polygonal shape results in refracted and focused radial streams of outflowing polaritons from the excited condensate which can be directed towards nearest neighbors. Our method can be used to lower the threshold power needed to achieve polariton condensation and increase spatial coherence in extended systems, paving the way towards creating extremely large-scale quantum fluids of light.
