论文标题
各向异性光学元件和重力透镜
Anisotropic optics and gravitational lensing of tilted Weyl fermions
论文作者
论文摘要
我们表明，Weyl锥的空间倾斜的倾斜Weyl半法，为研究各向异性光学元件和弯曲时空问题的类似物提供了一个平台。考虑到特定的倾斜曲线，我们通过数值评估电子波包及其当前密度的时间演变。我们证明，在存在不均匀的各向异性有效折射率的情况下，可以从Fermat的原理中获得此类系统中的电子轨迹。另一方面，我们展示了电子动力学如何揭示引力特征并使用它们模拟合成黑洞周围的重力镜头。这些结果在Weyl Semimetals中桥梁光学和重力类比，这表明了实验性固态电子光学的新途径。
We show that tilted Weyl semimetals with a spatially varying tilt of the Weyl cones provide a platform for studying analogues to problems in anisotropic optics as well as curved spacetime. Considering particular tilting profiles, we numerically evaluate the time evolution of electronic wave packets and their current densities. We demonstrate that electron trajectories in such systems can be obtained from Fermat's principle in the presence of an inhomogeneous, anisotropic effective refractive index. On the other hand, we show how the electrons dynamics reveal gravitational features and use them to simulate gravitational lensing around a synthetic black hole. These results bridge optical and gravitational analogies in Weyl semimetals, suggesting novel pathways for experimental solid-state electron optics.
