Department of Physics, University of Maryland, College Park, MD 20742, USA.
Joint Quantum Institute, University of Maryland, College Park, MD 20742, USA.
Science. 2018 Feb 9;359(6376):666-668. doi: 10.1126/science.aaq0327.
The application of topology in optics has led to a new paradigm in developing photonic devices with robust properties against disorder. Although considerable progress on topological phenomena has been achieved in the classical domain, the realization of strong light-matter coupling in the quantum domain remains unexplored. We demonstrate a strong interface between single quantum emitters and topological photonic states. Our approach creates robust counterpropagating edge states at the boundary of two distinct topological photonic crystals. We demonstrate the chiral emission of a quantum emitter into these modes and establish their robustness against sharp bends. This approach may enable the development of quantum optics devices with built-in protection, with potential applications in quantum simulation and sensing.
拓扑学在光学中的应用导致了一种新的范例，即开发具有抗无序稳健特性的光子器件。尽管在经典领域已经取得了相当大的拓扑现象进展，但在量子领域实现强光物质耦合仍未被探索。我们展示了单个量子发射器与拓扑光子态之间的强界面。我们的方法在两个不同拓扑光子晶体的边界处创建了稳健的反向传播边缘态。我们演示了量子发射器进入这些模式的手征发射，并证明了它们对急剧弯曲的稳健性。这种方法可能会促进具有内置保护的量子光学器件的发展，在量子模拟和传感方面具有潜在的应用。
