Robust Mølmer-Sørensen Gate Against Symmetric and Asymmetric Errors
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909448698593280 |
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| author | Zhang, Wenhao Tang, Gaoxiang Liu, Kecheng Yuan, Xiao Shen, Yangchao Wu, Yukai Zhang, Xiao-Ming |
| author_facet | Zhang, Wenhao Tang, Gaoxiang Liu, Kecheng Yuan, Xiao Shen, Yangchao Wu, Yukai Zhang, Xiao-Ming |
| contents | To achieve the entangling gate fidelity above the quantum error correction threshold, it is critical to suppress errors due to experimental imperfection. We consider the Mølmer-Sørensen gates in trapped-ion systems, and develop a general approach to suppress a family of noise sources that appeared as either symmetric or asymmetric errors. Using the time-average displacement minimization technique, both symmetric error and displacement-dependent part of the asymmetric errors are eliminated. Then, by analyzing the tangent space of displacement-independent errors, we obtain the analytic form of the generators of the correction operator to the remaining error terms. We then develop a compensation pulse to fully suppress the remaining displacement-independent errors. The effectiveness of our scheme is further verified by numerical analysis, through which we observe a significant reduction of entangling gate infidelity. Our findings enhance gate fidelity and robustness to noise for ion trap quantum computing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_02847 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Robust Mølmer-Sørensen Gate Against Symmetric and Asymmetric Errors Zhang, Wenhao Tang, Gaoxiang Liu, Kecheng Yuan, Xiao Shen, Yangchao Wu, Yukai Zhang, Xiao-Ming Quantum Physics To achieve the entangling gate fidelity above the quantum error correction threshold, it is critical to suppress errors due to experimental imperfection. We consider the Mølmer-Sørensen gates in trapped-ion systems, and develop a general approach to suppress a family of noise sources that appeared as either symmetric or asymmetric errors. Using the time-average displacement minimization technique, both symmetric error and displacement-dependent part of the asymmetric errors are eliminated. Then, by analyzing the tangent space of displacement-independent errors, we obtain the analytic form of the generators of the correction operator to the remaining error terms. We then develop a compensation pulse to fully suppress the remaining displacement-independent errors. The effectiveness of our scheme is further verified by numerical analysis, through which we observe a significant reduction of entangling gate infidelity. Our findings enhance gate fidelity and robustness to noise for ion trap quantum computing. |
| title | Robust Mølmer-Sørensen Gate Against Symmetric and Asymmetric Errors |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2501.02847 |