Photonic crystal cavities from hexagonal boron nitride

Sejeong Kim (), Johannes E. Fröch, Joe Christian, Marcus Straw, James Bishop, Daniel Totonjian, Kenji Watanabe, Takashi Taniguchi, Milos Toth () and Igor Aharonovich ()
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Sejeong Kim: University of Technology Sydney
Johannes E. Fröch: University of Technology Sydney
Joe Christian: Thermo Fisher Scientific
Marcus Straw: Thermo Fisher Scientific
James Bishop: University of Technology Sydney
Daniel Totonjian: University of Technology Sydney
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
Milos Toth: University of Technology Sydney
Igor Aharonovich: University of Technology Sydney

Nature Communications, 2018, vol. 9, issue 1, 1-8

Abstract: Abstract Development of scalable quantum photonic technologies requires on-chip integration of photonic components. Recently, hexagonal boron nitride (hBN) has emerged as a promising platform, following reports of hyperbolic phonon-polaritons and optically stable, ultra-bright quantum emitters. However, exploitation of hBN in scalable, on-chip nanophotonic circuits and cavity quantum electrodynamics (QED) experiments requires robust techniques for the fabrication of high-quality optical resonators. In this letter, we design and engineer suspended photonic crystal cavities from hBN and demonstrate quality (Q) factors in excess of 2000. Subsequently, we show deterministic, iterative tuning of individual cavities by direct-write EBIE without significant degradation of the Q-factor. The demonstration of tunable cavities made from hBN is an unprecedented advance in nanophotonics based on van der Waals materials. Our results and hBN processing methods open up promising avenues for solid-state systems with applications in integrated quantum photonics, polaritonics and cavity QED experiments.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05117-4

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DOI: 10.1038/s41467-018-05117-4

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