论文标题
使用单个量身定制的辅助波导在光子晶格中泵送模式
Mode pumping in photonic lattices using a single tailored auxiliary waveguide
论文作者
论文摘要
在这项工作中，我们提出了一种完全通用的方法，通过控制辅助波导的传播常数及其耦合到主晶格，来泵送光学波导晶格的间隙拓扑模式。这样，我们可以将辅助波导上的单波导激发转换为特定的晶格模式。我们还证明了使用相同方法在两个波导晶格之间转移超模型的可能性。我们通过泵送和转移Su-Schrieffer-Heeger晶格的拓扑模式来说明结果。对于这两种情况，我们都表明，在实验范围内的参数值可以实现99 \％以上的纯度。此外，我们演示了如何使用该技术来泵送晶格的散装模式，以使波导数量少或在波导晶格之间启用模式转换。
In this work, we propose a completely general method to pump the gapped topological modes of a lattice of optical waveguides by controlling the propagation constant of an auxiliary waveguide and its coupling to the main lattice. In this way, we can transform a single-waveguide excitation on the auxiliary waveguide into a specific mode of the lattice. We also demonstrate the possibility of transferring supermodes between two waveguide lattices using the same method. We illustrate the results by pumping and transferring the topological modes of Su-Schrieffer-Heeger lattices. For both scenarios, we show that purities above 99\% can be achieved with parameter values within experimental reach. Additionally, we demonstrate how the technique can be used to pump the bulk modes of the lattice for low number of waveguides or enable mode conversion between waveguide lattices.
