Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866909900123144192 |
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| author | Klink, Kai Kirkpatrick, Andrew Raj Tadokoro, Yukihiro Becker, Jonas Nils Nicley, Shannon Singer |
| author_facet | Klink, Kai Kirkpatrick, Andrew Raj Tadokoro, Yukihiro Becker, Jonas Nils Nicley, Shannon Singer |
| contents | Nitrogen-vacancy (NV) centers in diamond are widely recognized as highly promising solid-state quantum sensors due to their long room temperature coherence times and atomic-scale size, which enable exceptional sensitivity and nanoscale spatial resolution under ambient conditions. Ultrafast laser writing has demonstrated the deterministic spatial control of individual NV$^-$ centers, however, the resulting random orientation of the defect axis limits the magnetic field sensitivity and signal contrast. Here, we present an all-optical approach for reorienting laser-written NV$^-$ centers to lie along a specific crystallographic axis using femtosecond laser annealing. This technique enables the creation of spatially ordered NV$^-$ arrays with uniform orientation, for enhancing performance for quantum magnetometry. We achieve deterministic alignment along the optical axis in both (100)- and (111)-oriented diamond substrates, paving the way for scalable, high-performance quantum devices based on orientation-controlled NV$^-$ centers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_14047 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation Klink, Kai Kirkpatrick, Andrew Raj Tadokoro, Yukihiro Becker, Jonas Nils Nicley, Shannon Singer Quantum Physics Nitrogen-vacancy (NV) centers in diamond are widely recognized as highly promising solid-state quantum sensors due to their long room temperature coherence times and atomic-scale size, which enable exceptional sensitivity and nanoscale spatial resolution under ambient conditions. Ultrafast laser writing has demonstrated the deterministic spatial control of individual NV$^-$ centers, however, the resulting random orientation of the defect axis limits the magnetic field sensitivity and signal contrast. Here, we present an all-optical approach for reorienting laser-written NV$^-$ centers to lie along a specific crystallographic axis using femtosecond laser annealing. This technique enables the creation of spatially ordered NV$^-$ arrays with uniform orientation, for enhancing performance for quantum magnetometry. We achieve deterministic alignment along the optical axis in both (100)- and (111)-oriented diamond substrates, paving the way for scalable, high-performance quantum devices based on orientation-controlled NV$^-$ centers. |
| title | Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.14047 |