Multi-species optically addressable spin defects in a van der Waals material
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866911983293431808 |
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| author | Scholten, Sam C. Singh, Priya Healey, Alexander J. Robertson, Islay O. Haim, Galya Tan, Cheng Broadway, David A. Wang, Lan Abe, Hiroshi Ohshima, Takeshi Kianinia, Mehran Reineck, Philipp Aharonovich, Igor Tetienne, Jean-Philippe |
| author_facet | Scholten, Sam C. Singh, Priya Healey, Alexander J. Robertson, Islay O. Haim, Galya Tan, Cheng Broadway, David A. Wang, Lan Abe, Hiroshi Ohshima, Takeshi Kianinia, Mehran Reineck, Philipp Aharonovich, Igor Tetienne, Jean-Philippe |
| contents | 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 visible emitter spins. We unambiguously prove that the visible emitters are $S=\frac{1}{2}$ spins and further demonstrate room temperature coherent control and optical readout of both spin species. Importantly, by tuning the two spin species into resonance with each other, we observe cross-relaxation indicating strong inter-species dipolar coupling. We then demonstrate magnetic imaging using the $S=\frac{1}{2}$ defects, both under ambient and cryogenic conditions, and leverage their lack of intrinsic quantization axis to determine the anisotropic magnetic susceptibility of a test sample. Our results establish hBN as a versatile platform for quantum technologies in a van der Waals host at room temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_16600 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Multi-species optically addressable spin defects in a van der Waals material Scholten, Sam C. Singh, Priya Healey, Alexander J. Robertson, Islay O. Haim, Galya Tan, Cheng Broadway, David A. Wang, Lan Abe, Hiroshi Ohshima, Takeshi Kianinia, Mehran Reineck, Philipp Aharonovich, Igor Tetienne, Jean-Philippe Mesoscale and Nanoscale Physics 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 visible emitter spins. We unambiguously prove that the visible emitters are $S=\frac{1}{2}$ spins and further demonstrate room temperature coherent control and optical readout of both spin species. Importantly, by tuning the two spin species into resonance with each other, we observe cross-relaxation indicating strong inter-species dipolar coupling. We then demonstrate magnetic imaging using the $S=\frac{1}{2}$ defects, both under ambient and cryogenic conditions, and leverage their lack of intrinsic quantization axis to determine the anisotropic magnetic susceptibility of a test sample. Our results establish hBN as a versatile platform for quantum technologies in a van der Waals host at room temperature. |
| title | Multi-species optically addressable spin defects in a van der Waals material |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2306.16600 |