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Room-temperature optically detected magnetic resonance of single defects in hexagonal boron nitride
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Room-temperature optically detected magnetic resonance of single defects in hexagonal boron nitride
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Room-temperature optically detected magnetic resonance of single defects in hexagonal boron nitride
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Journal Article
Room-temperature optically detected magnetic resonance of single defects in hexagonal boron nitride
2022
Overview
Optically addressable solid-state spins are important platforms for quantum technologies, such as repeaters and sensors. Spins in two-dimensional materials offer an advantage, as the reduced dimensionality enables feasible on-chip integration into devices. Here, we report room-temperature optically detected magnetic resonance (ODMR) from single carbon-related defects in hexagonal boron nitride with up to 100 times stronger contrast than the ensemble average. We identify two distinct bunching timescales in the second-order intensity-correlation measurements for ODMR-active defects, but only one for those without an ODMR response. We also observe either positive or negative ODMR signal for each defect. Based on kinematic models, we relate this bipolarity to highly tuneable internal optical rates. Finally, we resolve an ODMR fine structure in the form of an angle-dependent doublet resonance, indicative of weak but finite zero-field splitting. Our results offer a promising route towards realising a room-temperature spin-photon quantum interface in hexagonal boron nitride.
Optically active spins in solid-state materials hold promise for future quantum technologies. Here, the authors demonstrate optically detected magnetic resonance at room temperature for single defects in a two-dimensional material, hexagonal boron nitride.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
