论文标题
超快和非谐的狂犬病振荡
Ultrafast and Anharmonic Rabi Oscillations between Non-Bloch-Bands
论文作者
论文摘要
较弱的交流谐振场诱导的Bloch带中的狂犬翻转是涉及带间跃迁的连贯效应。在这里，我们考虑了在非热式两波段晶体中量化和拉比振荡的基本过程，表现出不平衡的非铁皮皮肤效应，并揭示了狂犬病的前所未有的情况。但是，过渡的有效偶极矩（通常被认为是散装特性）在很大程度上取决于边界条件，只有在存在开放式边界时，狂犬病频率就会大大增强。随着场强的提高，拉比振荡迅速变成谐音，并且过渡在能量弹药平面中停止垂直，直到由于世俗的扩增通道，直到系统进入不稳定的状态（复杂的准能力光谱）。即使在存在复杂能量的情况下，Rabi振荡也保持稳定，这为非热，非本地和浮雕影响之间的竞争如何导致可显着的物理量化量增强。
Rabi flopping between Bloch bands induced by a weak ac resonant field is a coherent effect involving interband transitions. Here we consider the fundamental processes of emission/absorption of quanta and Rabi oscillations in non-Hermitian two-band lattices exhibiting unbalanced non-Hermitian skin effect, and unveil an unprecedented scenario of Rabi flopping. The effective dipole moment of the transition - usually considered a bulk property - is however strongly dependent on boundary conditions, being greatly enhanced with increased Rabi frequency only when open boundaries are present. As the field strength is increased, Rabi oscillations rapidly become anharmonic, and transitions cease to be vertical in the energy-momentum plane until the system enters into an unstable regime (complex quasi-energy spectrum) due to secular amplification channels. Remaining stable even in the presence of complex energies, Rabi oscillations provide a vivid illustration of how the competition between non-Hermitian, non-local and Floquet influences can result in significant enhancements of physically measurable quantities.
