DataVXAdvanced Optical MaterialsPaper
journal article·2025-09Open access

Quantum Emitters in Rhombohedral Boron Nitride

Angus Gale, Mehran Kianinia, Jake Horder, Connor Tweedie, Mridul Singhal, Dominic Scognamiglio, Jiajie Qi, Kaihui Liu, Carla Verdi, Igor Aharonovich, Milos Toth

Advanced Optical Materials· Volume 13· Issue 27
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Source abstract

Abstract

Abstract Rhombohedral boron nitride (rBN) is an emerging wide‐bandgap van der Waals (vdW) material that combines strong second‐order nonlinear optical properties with the structural flexibility of layered 2D systems. It is shown that rBN hosts optically‐addressable spin defects and single‐photon emitters (SPEs). Both are fabricated deterministically, using site‐specific techniques, and are compared to their analogues in hexagonal boron nitride (hBN). Emission spectra in hBN and rBN are compared, and computational models of defects in hBN and rBN are used to elucidate the debated atomic structure of the B‐center SPE in BN. The results establish rBN as a monolithic vdW platform that uniquely combines second‐order nonlinear optical properties, optically addressable spin defects, and high‐quality SPEs, opening new possibilities for integrated quantum and nonlinear photonics.
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Research context

OpenAlex topics: Boron and Carbon Nanomaterials Research · Diamond and Carbon-based Materials Research · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mathematical and Physical Sciences Faculty of Science University of Technology Sydney Ultimo New South Wales 2007 Australia

ARC Centre of Excellence for Transformative Meta‐Optical Systems (TMOS) University of Technology Sydney Ultimo New South Wales 2007 Australia

School of Mathematics and Physics The University of Queensland Brisbane QLD 4072 Australia

State Key Laboratory for Mesoscopic Physics School of Physics Peking University Beijing 100871 China

Songshan Lake Materials Laboratory Dongguan 523808 China

Funding

Australian Research Council · Office of Naval Research Global · National Natural Science Foundation of China · Air Force Office of Scientific Research

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