Journal article

Photonic crystal cavities from hexagonal boron nitride

Sejeong Kim, Johannes E Froch, Joe Christian, Marcus Straw, James Bishop, Daniel Totonjian, Kenji Watanabe, Takashi Taniguchi, Milos Toth, Igor Aharonovich

Nature Communications | NATURE PUBLISHING GROUP | Published : 2018


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 individua..

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Awarded by Australian Research council

Awarded by Asian Office of Aerospace Research and Development grant

Awarded by Office of Naval Research Global

Funding Acknowledgements

The authors thank Dr T. Tran for assistance with Raman measurements and Dr C. Elbadawi for the assistance with EBIE. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan, and JSPS KAKENHI, Grant Number JP15K21722. Financial support from the Australian Research council (via DP140102721, DP180100077, LP170100150), the Asian Office of Aerospace Research and Development grant FA2386-17-1-4064, the Office of Naval Research Global under grant number N62909-18-1-2025 are gratefully acknowledged. I.A. acknowledges the generous support provided by the Alexander von Humboldt Foundation.