【摘要】 在二维周期光子晶格中研究了Kerr型非线性Landau-Zener隧穿.首先在六方晶系光子晶格中推导出非线性三能级Landau-Zener隧穿模型,在特殊初值条件下将其转化为非线性二能级模型.对于三能级隧穿模型,选择特殊初值,研究了隧穿率随参数的变化规律.更多还原

【Abstract】 Nonlinear Landau-Zener tunneling in two-dimensional photonic lattices of Kerr nonlinearity media is investigated. We first derive the nonlinear three-level Landau-Zener model in photonic lattices for the case of hexagonal symmetry, and then simplify this model to a nonlinear two-level Landau-Zener model under a certain initial condition. For the three-level tunneling model, we calculate the tunneling probability numerically and study its changing rules under the specific initial condition.更多还原