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arXiv · 2203.15288

Topological atomic spinwave lattices by dissipative couplings

Dongdong Hao·Lin Wang·Xingda Lu·Xuzhen Cao·Suotang Jia·Ying Hu·Yanhong Xiao
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Abstract

Recent experimental advance in creating dissipative couplings provides a new route for engineering exotic lattice systems and exploring topological dissipation. Using the spatial lattice of atomic spinwaves in a vacuum vapor cell, where purely dissipative couplings arise from diffusion of atoms, we experimentally realize a dissipative version of the Su-Schrieffer-Heeger (SSH) model. We construct the dissipation spectrum of the topological or trivial lattices via electromagnetically-induced-transparency (EIT) spectroscopy. The topological dissipation spectrum is found to exhibit edge modes within a dissipative gap. We validate chiral symmetry of the dissipative SSH couplings, and also probe topological features of the generalized dissipative SSH model. This work paves the way for realizing non-Hermitian topological quantum optics via dissipative couplings.

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Dongdong Hao, Lin Wang, Xingda Lu, Xuzhen Cao, Suotang Jia, Ying Hu, Yanhong Xiao. 2022-03-29. Topological atomic spinwave lattices by dissipative couplings. https://doi.org/10.1103/physrevlett.130.153602

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