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Engineering spin defects in hexagonal boron nitride

Sources:nanopure | Release date: 2020-06-13 | Browsing volume:
Key words:Engineering spin defects in hexagonal boron nitride
Two-dimensional hexagonal boron nitride offers intriguing opportunities for advanced studies of light-matter interaction at the nanoscale, specifically for realizations in quantum nanophotonics. Here, we demonstrate the engineering of optically-addressable spin defects based on the negatively-charged boron vacancy center. We show that these centers can be created in exfoliated hexagonal boron nitride using a variety of focused ion beams (nitrogen, xenon and argon), with nanoscale precision. Using a combination of laser and resonant microwave excitation, we carry out optically detected magnetic resonance spectroscopy measurements, which reveal a zero-field ground state splitting for the defect of ~3.46 GHz. We also perform photoluminescence excitation spectroscopy and temperature dependent photoluminescence measurements to elucidate the photophysical properties of the center. Our results are important for advanced quantum and nanophotonics realizations involving manipulation and readout of spin defects in hexagonal boron nitride.
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Suzhou Nutpool Materials Technology Co., Ltd., established in 2016, is located in the national high-tech development zone Changshu Economic and Technological Development Zone, and has got funded by Jiangsu Province, Suzhou and Changshu government to scale-up the production of ultra-fine specialty ceramic powders with high-purity.