Mitigating transients in flux-control signals in a superconducting quantum processor
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| author | Aggarwal, Anuj Fernández-Pendás, Jorge Abad, Tahereh Shiri, Daryoush Jakobsson, Halldór Rommel, Marcus Nylander, Andreas Hogedal, Emil Osman, Amr Biznárová, Janka Rehammar, Robert Giannelli, Michele Faucci Roudsari, Anita Fadavi Bylander, Jonas Tancredi, Giovanna |
| author_facet | Aggarwal, Anuj Fernández-Pendás, Jorge Abad, Tahereh Shiri, Daryoush Jakobsson, Halldór Rommel, Marcus Nylander, Andreas Hogedal, Emil Osman, Amr Biznárová, Janka Rehammar, Robert Giannelli, Michele Faucci Roudsari, Anita Fadavi Bylander, Jonas Tancredi, Giovanna |
| contents | Flux-tunable qubits and couplers are common components in superconducting quantum processors. However, dynamically controlling these elements via current pulses poses challenges due to distortions and transients in the propagating signals. In particular, long-time transients can persist, adversely affecting subsequent qubit control operations. We model the flux control line as a first-order RC circuit and introduce a class of pulses designed to mitigate long-time transients. We theoretically demonstrate the robustness of these pulses against parameter mischaracterization and provide experimental evidence of their effectiveness in mitigating transients when applied to a flux-tunable qubit coupler. The proposed pulse design offers a practical solution for mitigating long-time transients, enabling efficient and reliable experiment tune-ups without requiring detailed flux line characterization. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_08645 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mitigating transients in flux-control signals in a superconducting quantum processor Aggarwal, Anuj Fernández-Pendás, Jorge Abad, Tahereh Shiri, Daryoush Jakobsson, Halldór Rommel, Marcus Nylander, Andreas Hogedal, Emil Osman, Amr Biznárová, Janka Rehammar, Robert Giannelli, Michele Faucci Roudsari, Anita Fadavi Bylander, Jonas Tancredi, Giovanna Quantum Physics Superconductivity Flux-tunable qubits and couplers are common components in superconducting quantum processors. However, dynamically controlling these elements via current pulses poses challenges due to distortions and transients in the propagating signals. In particular, long-time transients can persist, adversely affecting subsequent qubit control operations. We model the flux control line as a first-order RC circuit and introduce a class of pulses designed to mitigate long-time transients. We theoretically demonstrate the robustness of these pulses against parameter mischaracterization and provide experimental evidence of their effectiveness in mitigating transients when applied to a flux-tunable qubit coupler. The proposed pulse design offers a practical solution for mitigating long-time transients, enabling efficient and reliable experiment tune-ups without requiring detailed flux line characterization. |
| title | Mitigating transients in flux-control signals in a superconducting quantum processor |
| topic | Quantum Physics Superconductivity |
| url | https://arxiv.org/abs/2503.08645 |