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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.00570 |
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| _version_ | 1866929654026207232 |
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| author | Foglszinger, Jonas Denisenko, Andrej Astakhov, Georgy V. Kazak, Lev Siyushev, Petr Zaitsev, Alexander M. Kolesov, Roman Wrachtrup, Jörg |
| author_facet | Foglszinger, Jonas Denisenko, Andrej Astakhov, Georgy V. Kazak, Lev Siyushev, Petr Zaitsev, Alexander M. Kolesov, Roman Wrachtrup, Jörg |
| contents | The ST2 center is an optically addressable point defect in diamond that facilitates spin initialization and readout. However, while this study presents the discovery of ST2 centers first observed in a natural diamond and provides a reliable technique for artificially creating them, its chemical structure remains unknown. To assess the potential of ST2, we map out its basic optical characteristics, reveal its electronic level structure, and quantify the intrinsic transition rates. Furthermore, we investigate its response to microwaves, static magnetic fields, and the polarization of excitation laser light, revealing twelve inequivalent orientations of the ST2 center. Simultaneous exposure to microwaves and static magnetic fields also reveals an exceptionally wide acceptance angle for sensing strong magnetic fields, unlike the well-established NV center, which is sensitive only within a narrow cone aligned with its symmetry axis. This finding establishes the ST2 center as a highly promising candidate for nanoscale quantum sensing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_00570 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Discovery of ST2 centers in natural and CVD diamond Foglszinger, Jonas Denisenko, Andrej Astakhov, Georgy V. Kazak, Lev Siyushev, Petr Zaitsev, Alexander M. Kolesov, Roman Wrachtrup, Jörg Optics Quantum Physics J.2 The ST2 center is an optically addressable point defect in diamond that facilitates spin initialization and readout. However, while this study presents the discovery of ST2 centers first observed in a natural diamond and provides a reliable technique for artificially creating them, its chemical structure remains unknown. To assess the potential of ST2, we map out its basic optical characteristics, reveal its electronic level structure, and quantify the intrinsic transition rates. Furthermore, we investigate its response to microwaves, static magnetic fields, and the polarization of excitation laser light, revealing twelve inequivalent orientations of the ST2 center. Simultaneous exposure to microwaves and static magnetic fields also reveals an exceptionally wide acceptance angle for sensing strong magnetic fields, unlike the well-established NV center, which is sensitive only within a narrow cone aligned with its symmetry axis. This finding establishes the ST2 center as a highly promising candidate for nanoscale quantum sensing. |
| title | Discovery of ST2 centers in natural and CVD diamond |
| topic | Optics Quantum Physics J.2 |
| url | https://arxiv.org/abs/2501.00570 |