High-fidelity control of a $^{13}$C nuclear spin coupled to a tin-vacancy center in diamond
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911547614298112 |
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| author | Resch, Jeremias Karapatzakis, Ioannis Elshorbagy, Mohamed Schrodin, Marcel Fuchs, Philipp Graßhoff, Philipp Kussi, Luis Sürgers, Christoph Popov, Cyril Becher, Christoph Wernsdorfer, Wolfgang Hunger, David |
| author_facet | Resch, Jeremias Karapatzakis, Ioannis Elshorbagy, Mohamed Schrodin, Marcel Fuchs, Philipp Graßhoff, Philipp Kussi, Luis Sürgers, Christoph Popov, Cyril Becher, Christoph Wernsdorfer, Wolfgang Hunger, David |
| contents | Nuclear spins near group-IV defects in diamond are promising candidates for quantum memories in quantum network applications. Here, we demonstrate high-fidelity control of a single $^{13}$C nuclear spin coupled to a tin-vacancy (SnV) center in diamond. We perform a combination of optical and microwave pumping to achieve initialization into a combined electro-nuclear spin state with a fidelity of $99.74(3)\,\%$. Harnessing a superconducting waveguide for radio-frequency driving, we demonstrate precise nuclear spin control: Ramsey measurements reveal a coherence time of $T_2^* = 1.5(1)\,$milliseconds, and we use dynamical decoupling to extend it to $1.35(3)\,$seconds. We perform randomized benchmarking, yielding a single-qubit gate fidelity of $99.92(1)\,\%$. This demonstrates a coherent spin-photon system with promising properties for quantum network nodes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_03354 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-fidelity control of a $^{13}$C nuclear spin coupled to a tin-vacancy center in diamond Resch, Jeremias Karapatzakis, Ioannis Elshorbagy, Mohamed Schrodin, Marcel Fuchs, Philipp Graßhoff, Philipp Kussi, Luis Sürgers, Christoph Popov, Cyril Becher, Christoph Wernsdorfer, Wolfgang Hunger, David Quantum Physics Nuclear spins near group-IV defects in diamond are promising candidates for quantum memories in quantum network applications. Here, we demonstrate high-fidelity control of a single $^{13}$C nuclear spin coupled to a tin-vacancy (SnV) center in diamond. We perform a combination of optical and microwave pumping to achieve initialization into a combined electro-nuclear spin state with a fidelity of $99.74(3)\,\%$. Harnessing a superconducting waveguide for radio-frequency driving, we demonstrate precise nuclear spin control: Ramsey measurements reveal a coherence time of $T_2^* = 1.5(1)\,$milliseconds, and we use dynamical decoupling to extend it to $1.35(3)\,$seconds. We perform randomized benchmarking, yielding a single-qubit gate fidelity of $99.92(1)\,\%$. This demonstrates a coherent spin-photon system with promising properties for quantum network nodes. |
| title | High-fidelity control of a $^{13}$C nuclear spin coupled to a tin-vacancy center in diamond |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2509.03354 |