Superconducting qubit decoherence correlated with detected radiation events
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866917159906574336 |
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| author | Castelli, A. R. Beck, K. M. Alegria, L. D. H. Martinez, L. A. Chaves, K. R. O'Kelley, S. R. Materise, N. DuBois, J. L Rosen, Y. J. |
| author_facet | Castelli, A. R. Beck, K. M. Alegria, L. D. H. Martinez, L. A. Chaves, K. R. O'Kelley, S. R. Materise, N. DuBois, J. L Rosen, Y. J. |
| contents | Most quantum error correction (QEC) protocols for superconducting qubits assume spatially and temporally uncorrelated decoherence events; however, recent evidence suggests that cosmic radiation induces spatially correlated errors. We present a platform that sandwiches a superconducting transmon qubit between two microwave kinetic inductance detector (MKID) arrays, enabling real-time detection of radiation-induced phonon bursts. By synchronizing MKID event detection with single-shot measurements of qubit energy relaxation ($T_1$) and phase coherence ($T_2$), we observe statistically significant reductions in both $T_1$ and $T_2$-up to 30.5%-immediately following dual MKID events attributed to penetrating muons. Our findings directly link radiating events to correlated qubit decoherence. Furthermore, our experimental platform provides a foundation for systematic studies of radiation effects, the development of shielding and mitigation techniques, and the refinement of error-correction algorithms tailored to correlated noise sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_18171 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Superconducting qubit decoherence correlated with detected radiation events Castelli, A. R. Beck, K. M. Alegria, L. D. H. Martinez, L. A. Chaves, K. R. O'Kelley, S. R. Materise, N. DuBois, J. L Rosen, Y. J. Quantum Physics Superconductivity Most quantum error correction (QEC) protocols for superconducting qubits assume spatially and temporally uncorrelated decoherence events; however, recent evidence suggests that cosmic radiation induces spatially correlated errors. We present a platform that sandwiches a superconducting transmon qubit between two microwave kinetic inductance detector (MKID) arrays, enabling real-time detection of radiation-induced phonon bursts. By synchronizing MKID event detection with single-shot measurements of qubit energy relaxation ($T_1$) and phase coherence ($T_2$), we observe statistically significant reductions in both $T_1$ and $T_2$-up to 30.5%-immediately following dual MKID events attributed to penetrating muons. Our findings directly link radiating events to correlated qubit decoherence. Furthermore, our experimental platform provides a foundation for systematic studies of radiation effects, the development of shielding and mitigation techniques, and the refinement of error-correction algorithms tailored to correlated noise sources. |
| title | Superconducting qubit decoherence correlated with detected radiation events |
| topic | Quantum Physics Superconductivity |
| url | https://arxiv.org/abs/2512.18171 |