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説明:

Optical microcavities provide a powerful and versatile framework for manipulating the dynamics of photonic emission from optically active materials through light recirculation. Spatially indirect interlayer excitons (IXs) exhibit broad tunability of their emission energy via the quantum-confined Stark effect. However, the electrical tunability of IXs has not been exploited in cavity-coupled systems until now. In this work, we modulate the detuning between the cavity resonance and the IX emission in a monolithic Fabry-Perot cavity using an applied vertical electric field. We reveal a simultaneous enhancement of both the emission intensity and lifetime of weakly-coupled IXs when in resonance with the optical cavity due to strong Purcell inhibition and cavity transparency effects. We further investigate the tunable momentum dispersion of coupled IXs through back-focal plane imaging and explain our results by the cavity coupling of IX transition dipoles as supported by theoretical modeling. Our work represents an unprecedented integration effort that enables the versatile tuning of highly interacting IXs within monolithic cavities, revealing the attractiveness of electrically tunable IX cavity coupling for both fundamental studies towards exciton condensate manipulation and future integration of excitonic devices.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: interlayer excitons (IXs)
, monolithic cavities, Stark effect


刊行年月日: 2025-07-17

出版者: Springer Science and Business Media LLC

掲載誌:

• Nature Nanotechnology (ISSN: 17483387) vol. 20 issue. 10 p. 1412-1418

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1038/s41565-025-01969-2

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更新時刻: 2026-02-17 12:30:20 +0900

MDRでの公開時刻: 2026-02-17 09:11:01 +0900