Robust and fast microwave-driven quantum logic for trapped-ion qubits
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arXiv
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| Auteurs principaux: | , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916329895755776 |
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| author | Weber, M. A. Gely, M. F. Hanley, R. K. Harty, T. P. Leu, A. D. Löschnauer, C. M. Nadlinger, D. P. Lucas, D. M. |
| author_facet | Weber, M. A. Gely, M. F. Hanley, R. K. Harty, T. P. Leu, A. D. Löschnauer, C. M. Nadlinger, D. P. Lucas, D. M. |
| contents | Microwave-driven logic is a promising alternative to laser control in scaling trapped-ion based quantum processors. However, such electronic gates have yet to match the speed offered by their laser-driven counterparts. Here, we implement Mølmer-Sørensen two-qubit gates on $^{43}\text{Ca}^+$ hyperfine clock qubits in a cryogenic ($\approx25~\text{K}$) surface trap, driven by near-field microwaves. We achieve gate durations of $154~μ\text{s}$ (with $1.0(2)\%$ error) and $331~μ\text{s}$ ($0.5(1)\%$ error), which approaches the performance of typical laser-driven gates. In the $331~μ\text{s}$ gate, we demonstrate a new Walsh-modulated dynamical decoupling scheme which suppresses errors due to fluctuations in the qubit frequency as well as imperfections in the decoupling drive itself. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12955 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Robust and fast microwave-driven quantum logic for trapped-ion qubits Weber, M. A. Gely, M. F. Hanley, R. K. Harty, T. P. Leu, A. D. Löschnauer, C. M. Nadlinger, D. P. Lucas, D. M. Quantum Physics Microwave-driven logic is a promising alternative to laser control in scaling trapped-ion based quantum processors. However, such electronic gates have yet to match the speed offered by their laser-driven counterparts. Here, we implement Mølmer-Sørensen two-qubit gates on $^{43}\text{Ca}^+$ hyperfine clock qubits in a cryogenic ($\approx25~\text{K}$) surface trap, driven by near-field microwaves. We achieve gate durations of $154~μ\text{s}$ (with $1.0(2)\%$ error) and $331~μ\text{s}$ ($0.5(1)\%$ error), which approaches the performance of typical laser-driven gates. In the $331~μ\text{s}$ gate, we demonstrate a new Walsh-modulated dynamical decoupling scheme which suppresses errors due to fluctuations in the qubit frequency as well as imperfections in the decoupling drive itself. |
| title | Robust and fast microwave-driven quantum logic for trapped-ion qubits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2402.12955 |