Perczel J, Borregaard J, Chang D E, Yelin S F, Lukin M D
Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2020 Feb 28;124(8):083603. doi: 10.1103/PhysRevLett.124.083603.
We propose an experimentally feasible nanophotonic platform for exploring many-body physics in topological quantum optics. Our system is composed of a two-dimensional lattice of nonlinear quantum emitters with optical transitions embedded in a photonic crystal slab. The emitters interact through the guided modes of the photonic crystal, and a uniform magnetic field gives rise to large topological band gaps, robust edge states, and a nearly flat band with a nonzero Chern number. The presence of a topologically nontrivial nearly flat band paves the way for the realization of fractional quantum Hall states and fractional topological insulators in a topological quantum optical setting.
我们提出了一个实验上可行的纳米光子平台，用于探索拓扑量子光学中的多体物理。我们的系统由嵌入光子晶体平板中的具有光学跃迁的二维非线性量子发射器晶格组成。发射器通过光子晶体的导模相互作用，均匀磁场会产生大的拓扑带隙、稳健的边缘态以及具有非零陈数的近平带。拓扑非平凡近平带的存在为在拓扑量子光学环境中实现分数量子霍尔态和分数拓扑绝缘体铺平了道路。
