We present an acoustic analog of the Landau–Zener-tunneling (LZT) quantum-mechanical effect and apply it for irreversible wave redirection in weakly coupled nonlinear waveguides under impulse excitation. Due to nonlinearity, LZT-induced wave redirection is passively self-tunable with energy, being realized only in a certain energy band, which can be precisely predicted by theoretical models. Apart from the macroscale experimental validation of the classical quantum LZT effect, the findings apply to a broad class of acoustical systems with nonlinearity, disorder, and weak coupling.

中文翻译：

---

用于非线性波导中的波重定向的实验性Landau-Zener隧穿

我们介绍了Landau-Zener隧道（LZT）量子力学效应的声学模拟，并将其应用于在脉冲激励下的弱耦合非线性波导中的不可逆波重定向。由于非线性，LZT诱导的波重定向可以通过能量被动地自调谐，仅在特定的能带中实现，这可以通过理论模型精确地预测。除了对经典量子LZT效应的宏观实验验证以外，这些发现还适用于具有非线性，无序和弱耦合的多种声学系统。