Subspace Leakage Error Randomized Benchmarking of Mølmer-Sørensen Gates
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908586373808128 |
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| author | Sutherland, R. T. Hughes, A. C. Marceaux, J. P. Knaack, H. M. Löschnauer, C. M. Srinivas, R. |
| author_facet | Sutherland, R. T. Hughes, A. C. Marceaux, J. P. Knaack, H. M. Löschnauer, C. M. Srinivas, R. |
| contents | We demonstrate a new technique that adapts single-qubit randomized benchmarking to two-qubit Mølmer-Sørensen gates. We use the controllable gate phase to generate Cliffords that act on a two-state subspace, enabling benchmarking of two-qubit gates without single-qubit operations. In addition to quantifying the gate infidelity, the protocol provides valuable information about the type of error by distinguishing between those that conserve the two-state subspace and those that result in leakage out of it. We demonstrate the protocol for calibrating and validating all-electronic maximally entangling gates in a trapped-ion quantum computer, achieving a two-qubit gate error of $2.6 (2)\times10^{-4}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_09508 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Subspace Leakage Error Randomized Benchmarking of Mølmer-Sørensen Gates Sutherland, R. T. Hughes, A. C. Marceaux, J. P. Knaack, H. M. Löschnauer, C. M. Srinivas, R. Quantum Physics Atomic Physics We demonstrate a new technique that adapts single-qubit randomized benchmarking to two-qubit Mølmer-Sørensen gates. We use the controllable gate phase to generate Cliffords that act on a two-state subspace, enabling benchmarking of two-qubit gates without single-qubit operations. In addition to quantifying the gate infidelity, the protocol provides valuable information about the type of error by distinguishing between those that conserve the two-state subspace and those that result in leakage out of it. We demonstrate the protocol for calibrating and validating all-electronic maximally entangling gates in a trapped-ion quantum computer, achieving a two-qubit gate error of $2.6 (2)\times10^{-4}$. |
| title | Subspace Leakage Error Randomized Benchmarking of Mølmer-Sørensen Gates |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2510.09508 |