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Atomic-layer and two-dimensional (2D) materials have emerged as essential building blocks for next-generation quantum and semiconductor technologies, where atomic-scale control over light-matter interactions is critical. However, their inherently small interaction volume poses fundamental challenges for efficient integration into quantum and nanophotonic devices. Addressing this limitation requires the development of photonic platforms that can effectively enhance atomic-scale optical coupling. To this end, freestanding nanomembranes with extreme thinness and minimal radiative loss offer an ideal framework for integrating these materials into photonic systems. Here, we demonstrate an ultrathin photonic nanomembrane enabling atomic-scale control of light coupling. This architecture supports strong field confinement at the surface and significantly enhances light-matter interaction. Through the integration of atomic-layer dielectrics, we achieve Å-level thickness modulation, where each deposition cycle leads to an ultrafine shift of the high-Q resonance. High-resolution spatial mapping further confirms uniform and deterministic resonance tuning across the nanomembrane surface. Furthermore, by integrating a WS2 monolayer with the photonic nanomembrane, strong field localization within the monolayer and a significant emission enhancement are achieved. This approach offers a scalable and versatile route for atomic-scale light coupling, helping to overcome the limitations of conventional photonics and opening opportunities in quantum photonics, optoelectronics, and advanced semiconductor technologies.

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• Creative Commons BY Attribution 4.0 International
  

Keyword: nanomembranes, bound states in the continuum, light-matter interaction, atomic layers, ultrathin, transition metal dichalcogenide monolayers

Date published: 2026-04-03

Publisher: Wiley

Journal:

• Advanced Functional Materials (ISSN: 1616301X) vol. 36 issue. 44 e24286

Funding:

• Ministry of Education, Culture, Sports, Science and Technology JPMXP1225NM5090
• Ministry of Education 111L900801
• 日本学術振興会 JP25KF0083 (ゼロ屈折率-BICメタ表面による原子層遷移金属ダイカルコゲナイドレーザーの創出)
• 日本学術振興会 JP23K26155 (Low-dimensional material-based nanolaser using photonic bound states in the continuum)

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1002/adfm.202524286

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Updated at: 2026-06-03 08:33:16 +0900

Published on MDR: 2026-06-03 12:54:05 +0900