标题： 非互易朗道-泽纳隧穿的多隧穿效应：来自直流场响应的见解 显示英文标题

标题： Multi-tunneling effect of nonreciprocal Landau-Zener tunneling: Insights from DC field responses

摘要： 激光技术的最新进展激发了人们对非线性和非平衡现象的兴趣。 在这里，我们研究了量子隧穿和非互易响应的几何特性，特别是在强直流电场作用下非中心对称绝缘体中的位移矢量。 在强电场下的绝缘体中，经历布洛赫振荡的电子通过朗道-齐纳隧穿穿过不同的路径相互干涉。 我们发现，由于多隧穿引起的干涉效应会导致振荡的非互易响应，并且随着电场强度的增加而显著增强。 我们还通过非平衡稳态分析阐明了位移矢量在干涉条件中的作用。 这些结果将极大地有助于推进对非微扰区域内量子几何效应的系统理解。 显示英文摘要

摘要： Recent advancements in laser technology have spurred growing interest in nonlinear and nonequilibrium phenomena. Here, we investigate the geometric aspects of quantum tunneling and the nonreciprocal response, particularly focusing on the shift vector, in noncentrosymmetric insulators under a strong DC electric field. In insulators under a strong electric field, electrons undergoing Bloch oscillations interfere with each other by passing through different paths via Landau-Zener tunneling. We found that the interference effect due to multi-tunneling causes the oscillating nonreciprocal response that is significantly amplified with increasing electric field intensity. We also clarified the role of the shift vector in the interference conditions through an analysis of the nonequilibrium steady state. These results will contribute significantly to advancing a systematic understanding of quantum geometric effects in the nonperturbative regime.