论文标题
非绝热非线性光学和量子几何形状 - 应用于扭曲的schwinger效应
Nonadiabatic Nonlinear Optics and Quantum Geometry -- Application to the Twisted Schwinger Effect
论文作者
论文摘要
我们研究了由强相干激光场引起的固体中非线性光学过程的隧道机制。该理论基于具有非绝热几何影响的Landau-Zener模型的扩展。除了先前已知的纠正效果外，我们还发现了两种效果，即以快速扫描速度下的完美隧道和反浸润性。我们将该理论应用于扭曲的schwinger效应，即通过旋转电场的非绝热成对产生颗粒，并在迪拉克和韦尔福尔米子中找到光 - 瓦利极化和光电流的非扰动生成机制。
We study the tunneling mechanism of nonlinear optical processes in solids induced by strong coherent laser fields. The theory is based on an extension of the Landau-Zener model with nonadiabatic geometric effects. In addition to the rectification effect known previously, we find two effects, namely perfect tunneling and counterdiabaticity at fast sweep speed. We apply this theory to the twisted Schwinger effect, i.e., nonadiabatic pair production of particles by rotating electric fields, and find a nonperturbative generation mechanism of the opto-valley polarization and photo-current in Dirac and Weyl fermions.
