Spin coherence in strongly coupled spin baths in quasi-two-dimensional layers
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910829319815168 |
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| author | Schätzle, Philip Ghassemizadeh, Reyhaneh Urban, Daniel F. Wellens, Thomas Knittel, Peter Reiter, Florentin Jeske, Jan Hahn, Walter |
| author_facet | Schätzle, Philip Ghassemizadeh, Reyhaneh Urban, Daniel F. Wellens, Thomas Knittel, Peter Reiter, Florentin Jeske, Jan Hahn, Walter |
| contents | We investigate the spin-coherence decay of NV$^-$-spins interacting with the strongly-coupled bath of nitrogen defects in diamond layers. For thin diamond layers, we demonstrate that the spin-coherence times exceed those of bulk diamond, thus allowing to surpass the limit imposed by high defect concentrations in bulk. We show that the stretched-exponential parameter for the short-time spin-coherence decay is governed by the hyperfine interaction in the bath, thereby constraining random-noise models. We introduce a novel method based on the cluster-correlation expansion applied to strongly-interacting bath partitions. Our results facilitate material development for quantum-technology devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_16169 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spin coherence in strongly coupled spin baths in quasi-two-dimensional layers Schätzle, Philip Ghassemizadeh, Reyhaneh Urban, Daniel F. Wellens, Thomas Knittel, Peter Reiter, Florentin Jeske, Jan Hahn, Walter Quantum Physics Materials Science We investigate the spin-coherence decay of NV$^-$-spins interacting with the strongly-coupled bath of nitrogen defects in diamond layers. For thin diamond layers, we demonstrate that the spin-coherence times exceed those of bulk diamond, thus allowing to surpass the limit imposed by high defect concentrations in bulk. We show that the stretched-exponential parameter for the short-time spin-coherence decay is governed by the hyperfine interaction in the bath, thereby constraining random-noise models. We introduce a novel method based on the cluster-correlation expansion applied to strongly-interacting bath partitions. Our results facilitate material development for quantum-technology devices. |
| title | Spin coherence in strongly coupled spin baths in quasi-two-dimensional layers |
| topic | Quantum Physics Materials Science |
| url | https://arxiv.org/abs/2401.16169 |