Blueprint for Diamond Magnetometry: Unraveling Quantum Dephasing of Nitrogen-Vacancy Center Ensembles in Diamond
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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912183833591808 |
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| author | Zhang, Jixing Cheung, Cheuk Kit Kuebler, Michael Benke, Magnus Brossaud, Mathis Denisenko, Andrej Peng, Ruoming Anders, Jens Corcione, Emilio Sauer, Cristina Tarín Edmonds, Andrew M. Markham, Matthew Nakamura, Kazuo Sumiya, Hitoshi Onoda, Shinobu Isoya, Junichi Zhang, Chen Wrachtrup, Joerg |
| author_facet | Zhang, Jixing Cheung, Cheuk Kit Kuebler, Michael Benke, Magnus Brossaud, Mathis Denisenko, Andrej Peng, Ruoming Anders, Jens Corcione, Emilio Sauer, Cristina Tarín Edmonds, Andrew M. Markham, Matthew Nakamura, Kazuo Sumiya, Hitoshi Onoda, Shinobu Isoya, Junichi Zhang, Chen Wrachtrup, Joerg |
| contents | Diamonds with nitrogen-vacancy (NV) center ensembles are one of the most promising solid-state quantum platforms for various sensing applications. The combination of a long spin dephasing time ($T_2^*$) and a high NV center concentration is crucial for pushing the sensitivity limits. In this work, we propose a systematic measurement approach to quantify the electron spin dephasing in NV center ensembles and analyze the contributions of various sources to the dephasing time, including NV-NV interactions, strain and electric field distributions, $^{13}$C nuclear spins, and P1 electron spins. Our method is validated using a series of high-performance diamond samples, providing a comprehensive understanding of dephasing mechanisms and revealing correlations between NV concentration and different dephasing sources. Based on these insights, we further evaluate and propose strategies to improve the achievable sensitivity limits for DC magnetic field measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_14318 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Blueprint for Diamond Magnetometry: Unraveling Quantum Dephasing of Nitrogen-Vacancy Center Ensembles in Diamond Zhang, Jixing Cheung, Cheuk Kit Kuebler, Michael Benke, Magnus Brossaud, Mathis Denisenko, Andrej Peng, Ruoming Anders, Jens Corcione, Emilio Sauer, Cristina Tarín Edmonds, Andrew M. Markham, Matthew Nakamura, Kazuo Sumiya, Hitoshi Onoda, Shinobu Isoya, Junichi Zhang, Chen Wrachtrup, Joerg Quantum Physics Applied Physics Diamonds with nitrogen-vacancy (NV) center ensembles are one of the most promising solid-state quantum platforms for various sensing applications. The combination of a long spin dephasing time ($T_2^*$) and a high NV center concentration is crucial for pushing the sensitivity limits. In this work, we propose a systematic measurement approach to quantify the electron spin dephasing in NV center ensembles and analyze the contributions of various sources to the dephasing time, including NV-NV interactions, strain and electric field distributions, $^{13}$C nuclear spins, and P1 electron spins. Our method is validated using a series of high-performance diamond samples, providing a comprehensive understanding of dephasing mechanisms and revealing correlations between NV concentration and different dephasing sources. Based on these insights, we further evaluate and propose strategies to improve the achievable sensitivity limits for DC magnetic field measurements. |
| title | Blueprint for Diamond Magnetometry: Unraveling Quantum Dephasing of Nitrogen-Vacancy Center Ensembles in Diamond |
| topic | Quantum Physics Applied Physics |
| url | https://arxiv.org/abs/2408.14318 |