论文标题
一维光子准晶体中的再入侵离域转变
Reentrant delocalization transition in one-dimensional photonic quasicrystals
论文作者
论文摘要
众所周知，在某些一维准二维晶格中传播的波是表现出急剧定位的转变。我们从理论上预测并在实验上观察到，在一维光子准晶体中的光定位可能是在某些状态下的第二次离域转变，以提高准二级调制强度 - 重新输入过渡的一个示例。我们进一步建议，这种现象可以通过具有远距离耦合的二聚紧结合模型来定性地捕获。
Waves propagating in certain one-dimensional quasiperiodic lattices are known to exhibit a sharp localization transition. We theoretically predict and experimentally observe that the localization of light in one-dimensional photonic quasicrystals may be followed by a second delocalization transition for some states on increasing quasiperiodic modulation strength - an example of a reentrant transition. We further propose that this phenomenon can be qualitatively captured by a dimerized tight-binding model with long-range couplings.
