Optically addressable spin defects coupled to bound states in the continuum metasurfaces
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866917605132992512 |
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| author | Sortino, Luca Gale, Angus Kühner, Lucca Li, Chi Biechteler, Jonas Wendisch, Fedja J. Kianinia, Mehran Ren, Haoran Toth, Milos Maier, Stefan A. Aharonovich, Igor Tittl, Andreas |
| author_facet | Sortino, Luca Gale, Angus Kühner, Lucca Li, Chi Biechteler, Jonas Wendisch, Fedja J. Kianinia, Mehran Ren, Haoran Toth, Milos Maier, Stefan A. Aharonovich, Igor Tittl, Andreas |
| contents | Van der Waals (vdW) materials, including hexagonal boron nitride (hBN), are layered crystalline solids with appealing properties for investigating light-matter interactions at the nanoscale. hBN has emerged as a versatile building block for nanophotonic structures, and the recent identification of native optically addressable spin defects has opened up exciting possibilities in quantum technologies. However, these defects exhibit relatively low quantum efficiencies and a broad emission spectrum, limiting potential applications. Optical metasurfaces present a novel approach to boost light emission efficiency, offering remarkable control over light-matter coupling at the sub-wavelength regime. Here, we propose and realise a monolithic scalable integration between intrinsic spin defects in hBN metasurfaces and high quality (Q) factor resonances leveraging quasi-bound states in the continuum (qBICs). Coupling between spin defect ensembles and qBIC resonances delivers a 25-fold increase in photoluminescence intensity, accompanied by spectral narrowing to below 4 nm linewidth facilitated by Q factors exceeding $10^2$. Our findings demonstrate a new class of spin based metasurfaces and pave the way towards vdW-based nanophotonic devices with enhanced efficiency and sensitivity for quantum applications in imaging, sensing, and light emission. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2306_05735 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Optically addressable spin defects coupled to bound states in the continuum metasurfaces Sortino, Luca Gale, Angus Kühner, Lucca Li, Chi Biechteler, Jonas Wendisch, Fedja J. Kianinia, Mehran Ren, Haoran Toth, Milos Maier, Stefan A. Aharonovich, Igor Tittl, Andreas Optics Mesoscale and Nanoscale Physics Van der Waals (vdW) materials, including hexagonal boron nitride (hBN), are layered crystalline solids with appealing properties for investigating light-matter interactions at the nanoscale. hBN has emerged as a versatile building block for nanophotonic structures, and the recent identification of native optically addressable spin defects has opened up exciting possibilities in quantum technologies. However, these defects exhibit relatively low quantum efficiencies and a broad emission spectrum, limiting potential applications. Optical metasurfaces present a novel approach to boost light emission efficiency, offering remarkable control over light-matter coupling at the sub-wavelength regime. Here, we propose and realise a monolithic scalable integration between intrinsic spin defects in hBN metasurfaces and high quality (Q) factor resonances leveraging quasi-bound states in the continuum (qBICs). Coupling between spin defect ensembles and qBIC resonances delivers a 25-fold increase in photoluminescence intensity, accompanied by spectral narrowing to below 4 nm linewidth facilitated by Q factors exceeding $10^2$. Our findings demonstrate a new class of spin based metasurfaces and pave the way towards vdW-based nanophotonic devices with enhanced efficiency and sensitivity for quantum applications in imaging, sensing, and light emission. |
| title | Optically addressable spin defects coupled to bound states in the continuum metasurfaces |
| topic | Optics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2306.05735 |