Coherent all-optical control of the germanium vacancy in diamond
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866908465625038848 |
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| author | Adambukulam, C. Scott, J. A. Lim, S. Q. Aharonovich, I. Morello, A. Laucht, A. |
| author_facet | Adambukulam, C. Scott, J. A. Lim, S. Q. Aharonovich, I. Morello, A. Laucht, A. |
| contents | The germanium vacancy in diamond (GeV) is a promising candidate for color center based quantum networking. Yet, like for other group-IV vacancy defects in diamond, achieving fast, high-fidelity qubit operations using traditional magnetic resonance techniques is experimentally challenging due to a weak magnetic dipole and susceptibility to thermally induced decoherence. Here, we perform all-optical control of the GeV and realize Rabi frequencies exceeding $\sim 20$~MHz. We do so by driving the two $Λ$-systems of the GeV simultaneously and apply this to probe the spin coherence ($T_2^*=224\pm14$~ns, $T_2^{\rm H}=11.9\pm0.3$~$μ$s). Our control scheme is applicable to other color centers and particularly, other group-IV defects for which, the scheme may be optimized to improve all-optical control in these systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00244 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coherent all-optical control of the germanium vacancy in diamond Adambukulam, C. Scott, J. A. Lim, S. Q. Aharonovich, I. Morello, A. Laucht, A. Mesoscale and Nanoscale Physics Quantum Physics The germanium vacancy in diamond (GeV) is a promising candidate for color center based quantum networking. Yet, like for other group-IV vacancy defects in diamond, achieving fast, high-fidelity qubit operations using traditional magnetic resonance techniques is experimentally challenging due to a weak magnetic dipole and susceptibility to thermally induced decoherence. Here, we perform all-optical control of the GeV and realize Rabi frequencies exceeding $\sim 20$~MHz. We do so by driving the two $Λ$-systems of the GeV simultaneously and apply this to probe the spin coherence ($T_2^*=224\pm14$~ns, $T_2^{\rm H}=11.9\pm0.3$~$μ$s). Our control scheme is applicable to other color centers and particularly, other group-IV defects for which, the scheme may be optimized to improve all-optical control in these systems. |
| title | Coherent all-optical control of the germanium vacancy in diamond |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2402.00244 |