Nitrogen vacancy center in diamond-based Faraday magnetometer
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909624321441792 |
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| author | Kashtiban, Reza Morley, Gavin W. Newton, Mark E. Rahman, A T M Anishur |
| author_facet | Kashtiban, Reza Morley, Gavin W. Newton, Mark E. Rahman, A T M Anishur |
| contents | The nitrogen vacancy (NV) center in diamond is a versatile color center used for magnetometry, quantum computing, and quantum communications. In this article, using a single laser beam as a pump and probe, we measure the spin states of the NV center using the Faraday effect and use such measurements to develop a novel magnetic field sensor. Using the spin-state-dependent effect on the left and right circularly polarized light, we probe and confirm the existence of spin-orbit coupling in the NV center at room temperature. The sensitivity of our magnetometer is $350~$nT/$\sqrt{Hz}$, limited by the background produced by the laser trapped inside the diamond. We argue that by using an optical cavity and a high-purity diamond, sensitivities in the femtotesla level can be achieved. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_10437 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nitrogen vacancy center in diamond-based Faraday magnetometer Kashtiban, Reza Morley, Gavin W. Newton, Mark E. Rahman, A T M Anishur Applied Physics Quantum Physics The nitrogen vacancy (NV) center in diamond is a versatile color center used for magnetometry, quantum computing, and quantum communications. In this article, using a single laser beam as a pump and probe, we measure the spin states of the NV center using the Faraday effect and use such measurements to develop a novel magnetic field sensor. Using the spin-state-dependent effect on the left and right circularly polarized light, we probe and confirm the existence of spin-orbit coupling in the NV center at room temperature. The sensitivity of our magnetometer is $350~$nT/$\sqrt{Hz}$, limited by the background produced by the laser trapped inside the diamond. We argue that by using an optical cavity and a high-purity diamond, sensitivities in the femtotesla level can be achieved. |
| title | Nitrogen vacancy center in diamond-based Faraday magnetometer |
| topic | Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2411.10437 |