论文标题
在连贯的完美吸收器中铸造耗散紧凑状态
Casting dissipative compact states in coherent perfect absorbers
论文作者
论文摘要
连贯的完美吸收（CPA），也称为时间倒转激光，是一种波浪现象，是由于传播和反射波的破坏性干扰的互惠而产生的。在这项工作中，我们考虑了至少具有一个平坦频段的准单维晶格网络，并表明可以通过微调非弱点缺陷（耗时术语定位于一个单位电池内的耗散术语）来诱导该晶格的线性和非线性状态诱导CPA和激光。我们表明，产生CPA的局部耗散同时产生了晶格的新型耗散紧凑溶液，其生长或时间的衰变可以通过耗散参数进行微调。用于从数值可视化理论发现的方案为这些现象在光学设备中实现这些现象提供了一个新的平台。
Coherent perfect absorption (CPA), also known as time-reversed laser, is a wave phenomenon resulting from the reciprocity of destructive interference of transmitted and reflected waves. In this work we consider quasi one-dimensional lattice networks which posses at least one flat band, and show that CPA and lasing can be induced in both linear and nonlinear regimes of this lattice by fine-tuning non-Hermitian defects (dissipative terms localized within one unit-cell). We show that local dissipations that yield CPA simultaneously yield novel dissipative compact solutions of the lattice, whose growth or decay in time can be fine-tuned via the dissipation parameter. The scheme used to numerically visualize the theoretical findings offers a novel platform for the experimental implementation of these phenomena in optical devices.
