拓扑能隙中分子发射体的晶格量子电动力学
Lattice quantum electrodynamics of a molecular emitter in a topological gap
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中文总结 AI 辅助
研究利用晶格量子电动力学控制量子发射体，介绍基于DBT分子与微腔晶格耦合的光学晶格QED平台，通过原理验证观察到发射体-光子束缚态，证明该平台可用于设计多发射体量子光学系统。
中文摘要 AI 辅助
利用耦合谐振器晶格来设计光子环境，即晶格量子电动力学（QED），为控制单个量子发射体的自发发射及其间的光子介导相互作用提供了途径。本文介绍了一种基于嵌入蒽晶体并与开放光学微腔晶格耦合的单个二苯并四萘（DBT）分子的光学晶格QED平台。此混合架构受益于窄线宽分子发射体、位点分辨光学接入、工程化耦合谐振器能带以及与现有分子频率调谐技术的兼容性。作为原理验证，当单分子的光学跃迁调谐到Su-Schrieffer-Heeger（SSH）腔晶格的带隙时，观察到发射体-光子束缚态。这些能隙态显示出定向局域化和单亚晶格上的光子发射，继承自底层SSH晶格的空位诱导拓扑边缘模式。结果表明，与DBT分子耦合的开放腔晶格是用于设计具有可控光子介导相互作用的多发射体量子光学系统的通用架构。
英文摘要
Engineering the photonic environment using lattices of coupled resonators, which we refer to as lattice quantum electrodynamics (QED), provides a route to control both the spontaneous emission of individual quantum emitters and the photon-mediated interactions between them. Here we introduce an optical lattice QED platform based on individual dibenzoterrylene (DBT) molecules embedded in anthracene crystals and coupled to lattices of open optical microcavities. This hybrid architecture benefits from narrow-linewidth molecular emitters, site-resolved optical access, engineered coupled-resonator bands, and compatibility with established molecular frequency-tuning techniques. As a proof-of-principle demonstration, we observe emitter-photon bound states formed when the optical transition of a single molecule is tuned to the band gap of a Su-Schrieffer-Heeger (SSH) cavity lattice. These in-gap states display directional localization and photon emission on a single sublattice, inherited from the vacancy-induced topological edge modes of the underlying SSH lattice. Our results establish open-cavity lattices coupled to DBT molecules as a versatile architecture for engineering many-emitter quantum optical systems with controllable photon-mediated interactions.
