论文标题
二维量子发射极系统的拓扑效应
Topological Effects in Two-Dimensional Quantum Emitter Systems
论文作者
论文摘要
在这项工作中，我们讨论了在量子发射器系统与二维骨拓扑绝缘子结合的量子系统系统中发生的特殊效果。对于与Haldane模型耦合的单个发射极，我们找到了一个“脆弱”的quasibound状态，使发射机动力学对模型的参数非常敏感，并引起有效的远程相互作用，从而破坏了时间反向对称性。然后，我们讨论发射器，发射极线缺陷的一维布置以及浴缸的拓扑如何影响弱偶联机制中出现的有效极性模型，当发射器频谱调整为带隙。在Harper-Hofstadter模型中，我们将有效相互作用的非单调特征与周围能带的Chern数字联系起来，而在Haldane模型中，我们表明有效模型是无间隙或不取决于浴缸的拓扑结构。最后，我们讨论形成有序阵列的发射器的存在如何，一个发射器超级晶格，可以产生具有非平凡的Chern数字的偏光子模型，并修改浴缸中光子状态的拓扑结构。
In this work we discuss particular effects that take place in systems of quantum emitters coupled to two-dimensional bosonic topological insulators. For a single emitter coupled to the Haldane model, we find a "fragile" quasibound state that makes the emitter dynamics very sensitive to the model's parameters, and gives rise to effective long-range interactions that break time-reversal symmetry. We then discuss one-dimensional arrangements of emitters, emitter line defects, and how the topology of the bath affects the effective polariton models that appear in the weak-coupling regime when the emitters are spectrally tuned to a bandgap. In the Harper-Hofstadter model we link the non-monotonic character of the effective interactions to the Chern numbers of the surrounding energy bands, while in the Haldane model we show that the effective models are either gapless or not depending on the topology of the bath. Last, we discuss how the presence of emitters forming an ordered array, an emitter superlattice, can produce polariton models with non-trivial Chern numbers, and also modify the topology of the photonic states in the bath.
