Detection of temporal fluctuation in superconducting qubits for quantum error mitigation
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866929275325644800 |
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| author | Hirasaki, Yuta Daimon, Shunsuke Itoko, Toshinari Kanazawa, Naoki Saitoh, Eiji |
| author_facet | Hirasaki, Yuta Daimon, Shunsuke Itoko, Toshinari Kanazawa, Naoki Saitoh, Eiji |
| contents | We have investigated instability of a superconducting quantum computer by continuously monitoring the qubit output. We found that qubits exhibit a step-like change in the error rates. This change is repeatedly observed, and each step persists for several minutes. By analyzing the correlation between the increased errors and anomalous variance of the output, we demonstrate quantum error mitigation based on post-selection. Numerical analysis on the proposed method was also conducted. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_04337 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Detection of temporal fluctuation in superconducting qubits for quantum error mitigation Hirasaki, Yuta Daimon, Shunsuke Itoko, Toshinari Kanazawa, Naoki Saitoh, Eiji Quantum Physics We have investigated instability of a superconducting quantum computer by continuously monitoring the qubit output. We found that qubits exhibit a step-like change in the error rates. This change is repeatedly observed, and each step persists for several minutes. By analyzing the correlation between the increased errors and anomalous variance of the output, we demonstrate quantum error mitigation based on post-selection. Numerical analysis on the proposed method was also conducted. |
| title | Detection of temporal fluctuation in superconducting qubits for quantum error mitigation |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2307.04337 |