Topological Quantum Optics in Two-Dimensional Atomic Arrays
Topological Quantum Optics in Two-Dimensional Atomic Arrays
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DOI：
10.1103/physrevlett.119.023603
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发表时间：
2017-07-14
影响因子：
8.6
通讯作者：
Lukin, M. D.
中科院分区：
文献类型：
--
作者：
Perczel, J.;Borregaard, J.;Lukin, M. D.
我们证明了具有亚波长间隔的二维原子发射器阵列构成了拓扑保护的量子光学系统，其中光子传播对大缺陷是健壮的，而与自由空间发射相关的损耗被强烈地抑制。用磁场打破时间反转对称性会导致具有非平凡陈数和拓扑保护的长寿命边缘态的带隙光子带。由于组成发射体的固有非线性，这类系统为探索相互作用的拓扑系统的量子光学模拟提供了一个平台。
We demonstrate that two-dimensional atomic emitter arrays with subwavelength spacing constitute topologically protected quantum optical systems where the photon propagation is robust against large imperfections while losses associated with free space emission are strongly suppressed. Breaking time-reversal symmetry with a magnetic field results in gapped photonic bands with nontrivial Chern numbers and topologically protected, long-lived edge states. Due to the inherent nonlinearity of constituent emitters, such systems provide a platform for exploring quantum optical analogs of interacting topological systems.