Topological atomic spinwave lattices by dissipative couplings

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.

6 pages, 4 figures

References in corpus (7)

• Non-Abelian Anyons and Topological Quantum Computation
• Exceptional Topology of Non-Hermitian Systems
• Nonreciprocal Photon Transmission and Amplification via Reservoir Engineering
• Observation of Non-Hermitian Skin Effect and Topology in Ultracold Atoms
• Observation of anti-parity-time-symmetry, phase transitions and exceptional points in an optical fibre
• Non-reciprocity and quantum correlations of light transport in hot atoms via reservoir engineering
• Anyonic-parity-time symmetry in complex-coupled lasers

Cited by in corpus (6)

• Realizing exceptional points by Floquet dissipative couplings in thermal atoms
• Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics
• Topological transitions in dissipatively coupled Su-Schrieffer-Heeger models
• Velocity Scanning Tomography for Room-Temperature Quantum Simulation
• Nonreciprocity Induced Fractional Nonlinear Thouless Pumping
• Anomalous Point-Gap Interactions Unveil the Mirage Bath