It is found that the nonlinearity induced by the repulsive interaction can enhance the tunnelling probability compared to the usual linear Landdau-Zener tunnelling.

• 相对于传统的线性朗道-基纳隧穿，非线性朗道-基纳隧穿由排斥相互作用带来的非线性会增强隧穿的概率。