论文标题
在非铁浴中的量子发射器的异常行为
Anomalous Behaviors of Quantum Emitters in Non-Hermitian Baths
论文作者
论文摘要
近年来，已经对非热系统的系统和与结构化浴的发射器的行为进行了深入研究。在这里，我们研究了这些范式设置的相互作用。在一系列示例中，我们表明，与非热浴的单个量子发射极相连显示出许多非常规的行为，许多量子行为没有遗传学。我们首先考虑一个单向跳跃晶格，其复杂的分散体形成了循环。我们将循环内部特殊的结合状态识别为非铁皮皮肤效应的表现。在同一情况下，发射的光子可能显示出与游离繁殖明显不同的空间放大，可以在广义的布里渊区的帮助下理解。然后，我们考虑一个最近的邻居晶格，交替损失。我们发现，长期发射极的衰减总是遵循一项力量法，这通常是赫尔米尼亚浴室的看不见的。我们的工作表明，非热浴引起的异常量子发射器动力学景观。
Both non-Hermitian systems and the behaviour of emitters coupled to structured baths have been studied intensely in recent years. Here we study the interplay of these paradigmatic settings. In a series of examples, we show that a single quantum emitter coupled to a non-Hermitian bath displays a number of unconventional behaviours, many without Hermitian counterpart. We first consider a unidirectional hopping lattice whose complex dispersion forms a loop. We identify peculiar bound states inside the loop as a manifestation of the non-Hermitian skin effect. In the same setting, emitted photons may display spatial amplification markedly distinct from free propagation, which can be understood with the help of the generalized Brillouin zone. We then consider a nearest-neighbor lattice with alternating loss. We find that the long-time emitter decay always follows a power law, which is usually invisible for Hermitian baths. Our work points toward a rich landscape of anomalous quantum emitter dynamics induced by non-Hermitian baths.
