In situ mixer calibration for superconducting quantum circuits
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866910795211735040 |
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| author | Wu, Nan Lin, Jing Xie, Changrong Guo, Zechen Huang, Wenhui Zhang, Libo Zhou, Yuxuan Sun, Xuandong Zhang, Jiawei Guo, Weijie Linpeng, Xiayu Liu, Song Liu, Yang Ren, Wenhui Tao, Ziyu Jiang, Ji Chu, Ji Niu, Jingjing Zhong, Youpeng Yu, Dapeng |
| author_facet | Wu, Nan Lin, Jing Xie, Changrong Guo, Zechen Huang, Wenhui Zhang, Libo Zhou, Yuxuan Sun, Xuandong Zhang, Jiawei Guo, Weijie Linpeng, Xiayu Liu, Song Liu, Yang Ren, Wenhui Tao, Ziyu Jiang, Ji Chu, Ji Niu, Jingjing Zhong, Youpeng Yu, Dapeng |
| contents | Mixers play a crucial role in superconducting quantum computing, primarily by facilitating frequency conversion of signals to enable precise control and readout of quantum states. However, imperfections, particularly carrier leakage and unwanted sideband signal, can significantly compromise control fidelity. To mitigate these defects, regular and precise mixer calibrations are indispensable, yet they pose a formidable challenge in large-scale quantum control. Here, we introduce an in situ calibration technique and outcome-focused mixer calibration scheme using superconducting qubits. Our method leverages the qubit's response to imperfect signals, allowing for calibration without modifying the wiring configuration. We experimentally validate the efficacy of this technique by benchmarking single-qubit gate fidelity and qubit coherence time. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_11671 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | In situ mixer calibration for superconducting quantum circuits Wu, Nan Lin, Jing Xie, Changrong Guo, Zechen Huang, Wenhui Zhang, Libo Zhou, Yuxuan Sun, Xuandong Zhang, Jiawei Guo, Weijie Linpeng, Xiayu Liu, Song Liu, Yang Ren, Wenhui Tao, Ziyu Jiang, Ji Chu, Ji Niu, Jingjing Zhong, Youpeng Yu, Dapeng Quantum Physics Mixers play a crucial role in superconducting quantum computing, primarily by facilitating frequency conversion of signals to enable precise control and readout of quantum states. However, imperfections, particularly carrier leakage and unwanted sideband signal, can significantly compromise control fidelity. To mitigate these defects, regular and precise mixer calibrations are indispensable, yet they pose a formidable challenge in large-scale quantum control. Here, we introduce an in situ calibration technique and outcome-focused mixer calibration scheme using superconducting qubits. Our method leverages the qubit's response to imperfect signals, allowing for calibration without modifying the wiring configuration. We experimentally validate the efficacy of this technique by benchmarking single-qubit gate fidelity and qubit coherence time. |
| title | In situ mixer calibration for superconducting quantum circuits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.11671 |