Optically detected magnetic resonance of nitrogen-vacancy centers in diamond using two-photon excitation
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866918452111867904 |
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| author | Nguyen, Lam T. Kieu, Khanh |
| author_facet | Nguyen, Lam T. Kieu, Khanh |
| contents | We demonstrate the use of two-photon excitation for observing the ground state optically detected magnetic resonance (ODMR) of nitrogen-vacancy centers in diamonds at room temperature. An ultrafast femtosecond laser at 1040 nm was used for excitation, while fluorescence signal read out was achieved through a combination of a PMT and a lock-in amplifier. The imaging capability of two-photon excitation fluorescence (2PEF) was utilized to map the distribution of NV centers in a bulk diamond and micro-sized diamonds. For the first time, ODMR traces of the nitrogen-vacancy center are observed with two-photon excitation, providing a promising tool for fast 3D quantum sensing and imaging. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_15755 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Optically detected magnetic resonance of nitrogen-vacancy centers in diamond using two-photon excitation Nguyen, Lam T. Kieu, Khanh Quantum Physics Applied Physics Atomic Physics Optics We demonstrate the use of two-photon excitation for observing the ground state optically detected magnetic resonance (ODMR) of nitrogen-vacancy centers in diamonds at room temperature. An ultrafast femtosecond laser at 1040 nm was used for excitation, while fluorescence signal read out was achieved through a combination of a PMT and a lock-in amplifier. The imaging capability of two-photon excitation fluorescence (2PEF) was utilized to map the distribution of NV centers in a bulk diamond and micro-sized diamonds. For the first time, ODMR traces of the nitrogen-vacancy center are observed with two-photon excitation, providing a promising tool for fast 3D quantum sensing and imaging. |
| title | Optically detected magnetic resonance of nitrogen-vacancy centers in diamond using two-photon excitation |
| topic | Quantum Physics Applied Physics Atomic Physics Optics |
| url | https://arxiv.org/abs/2604.15755 |