Spin Relaxometry with Solid-State Defects: Theory, Platforms, and Applications
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866915768373870592 |
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| author | Gong, Ruotian Melendez, Alex L. He, Guanghui Liu, Zhongyuan Zu, Chong Zhao, Huan |
| author_facet | Gong, Ruotian Melendez, Alex L. He, Guanghui Liu, Zhongyuan Zu, Chong Zhao, Huan |
| contents | Spin relaxometry using solid-state spin defects, such as the diamond nitrogen-vacancy (NV) center, probes dynamical processes by measuring how environmental fluctuations enhance the spin relaxation rate. In the weak-coupling limit, relaxation rates sample the transverse magnetic-noise power spectral density through a sensor-specific filter function, turning the defect into a local, frequency-selective noise spectrometer. This review bridges theory and experiment, clarifying how measured relaxation rates map onto noise spectra and how near-field geometry shapes the response. We highlight representative applications across condensed-matter physics, chemical and biological sensing, and relaxometry-based magnetic-resonance spectroscopy. We conclude with emerging opportunities and key challenges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_01521 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Spin Relaxometry with Solid-State Defects: Theory, Platforms, and Applications Gong, Ruotian Melendez, Alex L. He, Guanghui Liu, Zhongyuan Zu, Chong Zhao, Huan Mesoscale and Nanoscale Physics Quantum Physics Spin relaxometry using solid-state spin defects, such as the diamond nitrogen-vacancy (NV) center, probes dynamical processes by measuring how environmental fluctuations enhance the spin relaxation rate. In the weak-coupling limit, relaxation rates sample the transverse magnetic-noise power spectral density through a sensor-specific filter function, turning the defect into a local, frequency-selective noise spectrometer. This review bridges theory and experiment, clarifying how measured relaxation rates map onto noise spectra and how near-field geometry shapes the response. We highlight representative applications across condensed-matter physics, chemical and biological sensing, and relaxometry-based magnetic-resonance spectroscopy. We conclude with emerging opportunities and key challenges. |
| title | Spin Relaxometry with Solid-State Defects: Theory, Platforms, and Applications |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2602.01521 |