From bound states to quantum spin models: chiral coherent dynamics in topological photonic rings.

ABSTRACT: Topological photonic systems offer a robust platform for guiding light in the presence of disorder, but their interplay with quantum emitters remains a frontier for realizing strongly correlated quantum states. Here, we explore a ring-shaped Su-Schrieffer-Heeger (SSH) photonic lattice interfaced with multiple quantum emitters to control topologically protected chiral quantum dynamics. Using a full microscopic model that includes cascaded Lindblad dynamics and chiral emitter-bath couplings, we reveal how the topology of the bath mediates nonreciprocal, long-range interactions between emitters. These interactions lead to rich many-body spin phenomena, including robust coherence, directional energy transfer, captured by an effective spin Hamiltonian derived from the system's topology. We show

SUBMITTER: Davoodi F 

PROVIDER: S-EPMC12704495 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature