Optically addressable spin defects coupled to bound states in the continuum metasurfaces.

Sortino, L; Gale, A; Kühner, L; Li, C; Biechteler, J; Wendisch, FJ; Kianinia, M; Ren, H; Toth, M; Maier, SA; Aharonovich, I; Tittl, A

Optically addressable spin defects coupled to bound states in the continuum metasurfaces.

Sortino, L Gale, A Kühner, L Li, C Biechteler, J Wendisch, FJ Kianinia, M

Ren, H Toth, M

Maier, SA Aharonovich, I

Tittl, A

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Publisher:: NATURE PORTFOLIO
Publication Type:: Journal Article
Citation:: Nat Commun, 2024, 15, (1), pp. 2008
Issue Date:: 2024-03-05

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Field	Value	Language
dc.contributor.author	Sortino, L
dc.contributor.author	Gale, A
dc.contributor.author	Kühner, L
dc.contributor.author	Li, C
dc.contributor.author	Biechteler, J
dc.contributor.author	Wendisch, FJ
dc.contributor.author	Kianinia, M https://orcid.org/0000-0003-4073-1492
dc.contributor.author	Ren, H
dc.contributor.author	Toth, M https://orcid.org/0000-0003-1564-4899
dc.contributor.author	Maier, SA
dc.contributor.author	Aharonovich, I https://orcid.org/0000-0003-4304-3935
dc.contributor.author	Tittl, A
dc.date.accessioned	2024-08-01T04:24:33Z
dc.date.available	2024-02-16
dc.date.available	2024-08-01T04:24:33Z
dc.date.issued	2024-03-05
dc.identifier.citation	Nat Commun, 2024, 15, (1), pp. 2008
dc.identifier.issn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.uri	http://hdl.handle.net/10453/179924
dc.description.abstract	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, exceeding 102, leveraging quasi-bound states in the continuum (qBICs). Coupling between defect ensembles and qBIC resonances delivers a 25-fold increase in photoluminescence intensity, accompanied by spectral narrowing to below 4 nm linewidth and increased narrowband spin-readout efficiency. Our findings demonstrate a new class of metasurfaces for spin-defect-based technologies and pave the way towards vdW-based nanophotonic devices with enhanced efficiency and sensitivity for quantum applications in imaging, sensing, and light emission.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE PORTFOLIO
dc.relation	http://purl.org/au-research/grants/arc/CE200100010
dc.relation	United States Department of the NavyN629092212028
dc.relation	http://purl.org/au-research/grants/arc/FT220100053
dc.relation.ispartof	Nat Commun
dc.relation.isbasedon	10.1038/s41467-024-46272-1
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.title	Optically addressable spin defects coupled to bound states in the continuum metasurfaces.
dc.type	Journal Article
utslib.citation.volume	15
utslib.location.activity	England
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Strength - MTEE - Research Centre Materials and Technology for Energy Efficiency
pubs.organisational-group	University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	recently_added	*
dc.date.updated	2024-08-01T04:24:27Z
pubs.issue	1
pubs.publication-status	Published online
pubs.volume	15
utslib.citation.issue	1

Abstract:

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, exceeding 102, leveraging quasi-bound states in the continuum (qBICs). Coupling between defect ensembles and qBIC resonances delivers a 25-fold increase in photoluminescence intensity, accompanied by spectral narrowing to below 4 nm linewidth and increased narrowband spin-readout efficiency. Our findings demonstrate a new class of metasurfaces for spin-defect-based technologies and pave the way towards vdW-based nanophotonic devices with enhanced efficiency and sensitivity for quantum applications in imaging, sensing, and light emission.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/179924