Topological atomic spinwave lattices by dissipative couplings

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...

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Bibliographic Details
Published in:arXiv.org 2023-02
Main Authors: Hao, Dongdong, Wang, Lin, Lu, Xingda, Cao, Xuzhen, Jia, Suotang, Hu, Ying, Xiao, Yanhong
Format: Article
Language:English
Subjects:
Couplings
Dissipation
Lattice vibration
Lattices
Quantum optics
Topology
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2203.15288