1. Multi-species optically addressable spin defects in a van der Waals material.
- Author
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Scholten, SC, Singh, P, Healey, AJ, Robertson, IO, Haim, G, Tan, C, Broadway, DA, Wang, L, Abe, H, Ohshima, T, Kianinia, M, Reineck, P, Aharonovich, I, Tetienne, J-P, Scholten, SC, Singh, P, Healey, AJ, Robertson, IO, Haim, G, Tan, C, Broadway, DA, Wang, L, Abe, H, Ohshima, T, Kianinia, M, Reineck, P, Aharonovich, I, and Tetienne, J-P more...
- Abstract
Optically addressable spin defects hosted in two-dimensional van der Waals materials represent a new frontier for quantum technologies, promising to lead to a new class of ultrathin quantum sensors and simulators. Recently, hexagonal boron nitride (hBN) has been shown to host several types of optically addressable spin defects, thus offering a unique opportunity to simultaneously address and utilise various spin species in a single material. Here we demonstrate an interplay between two separate spin species within a single hBN crystal, namely S = 1 boron vacancy defects and carbon-related electron spins. We reveal the S = 1/2 character of the carbon-related defect and further demonstrate room temperature coherent control and optical readout of both S = 1 and S = 1/2 spin species. By tuning the two spin ensembles into resonance with each other, we observe cross-relaxation indicating strong inter-species dipolar coupling. We then demonstrate magnetic imaging using the S = 1/2 defects and leverage their lack of intrinsic quantization axis to probe the magnetic anisotropy of a test sample. Our results establish hBN as a versatile platform for quantum technologies in a van der Waals host at room temperature. more...
- Published
- 2024