Topological Atomic Spinwave Lattices by Dissipative Couplings

• URL: http://arxiv.org/abs/2203.15288v1
• Date: Tue, 29 Mar 2022 07:05:35 GMT
• Title: Topological Atomic Spinwave Lattices by Dissipative Couplings
• Authors: Dongdong Hao, Lin Wang, Xingda Lu, Xuzhen Cao, Suotang Jia, Ying Hu, Yanhong Xiao
• Abstract summary: Recent experimental advance in creating dissipative couplings provides a new route for engineering exotic lattice systems. We experimentally realize a dissipative version of the Su-Schrieffer-Heeger (SSH) model. We construct the dissipation spectra of the topological or trivial lattices via electromagnetically-induced-transparency (EIT) spectroscopy.
• Score: 6.129991129970815
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 spectra of the topological or trivial lattices via electromagnetically-induced-transparency (EIT) spectroscopy. The topological dissipation spectrum is found to exhibit edge modes at dissipation rates within a dissipative gap, decoupled from the bulk. We also validate chiral symmetry of the dissipative SSH couplings. This work paves the way for realizing topology-enabled quantum correlations and non-Hermitian topological quantum optics via dissipative couplings.

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