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| Home > Publications database > Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Al/AlO x / Al Josephson Junctions Approaching 1 T > print |
| Home > Publications database > Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Al/AlO x / Al Josephson Junctions Approaching 1 T > print |
| 001 | 906955 | ||
| 005 | 20230123110609.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevApplied.17.034032 |2 doi |
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| 100 | 1 | _ | |a Krause, J. |0 P:(DE-Juel1)161384 |b 0 |
| 245 | _ | _ | |a Magnetic Field Resilience of Three-Dimensional Transmons with Thin-Film Al/AlO x / Al Josephson Junctions Approaching 1 T |
| 260 | _ | _ | |a College Park, Md. [u.a.] |c 2022 |b American Physical Society |
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| 520 | _ | _ | |a Magnetic-field-resilient superconducting circuits enable sensing applications and hybrid quantum computing architectures involving spin or topological qubits and electromechanical elements, as well as studying flux noise and quasiparticle loss. We investigate the effect of in-plane magnetic fields up to 1 T on the spectrum and coherence times of thin-film three-dimensional aluminum transmons. Using a copper cavity, unaffected by strong magnetic fields, we can probe solely the effect of magnetic fields on the transmons. We present data on a single-junction and a superconducting-quantum-interference-device (SQUID) transmon that are cooled down in the same cavity. As expected, the transmon frequencies decrease with increasing field, due to suppression of the superconducting gap and a geometric Fraunhofer-like contribution. Nevertheless, the thin-film transmons show strong magnetic field resilience: both transmons display microsecond coherence up to at least 0.65 T, and T1 remains above 1μs over the entire measurable range. SQUID spectroscopy is feasible up to 1 T, the limit of our magnet. We conclude that thin-film aluminum Josephson junctions are suitable hardware for superconducting circuits in the high-magnetic-field regime. |
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| 700 | 1 | _ | |a Vielmetter, M. |0 0000-0003-1505-504X |b 3 |
| 700 | 1 | _ | |a Feng, J. |0 P:(DE-Juel1)184891 |b 4 |u fzj |
| 700 | 1 | _ | |a Bounds, R. |0 P:(DE-HGF)0 |b 5 |
| 700 | 1 | _ | |a Catelani, G. |0 P:(DE-Juel1)151130 |b 6 |e Corresponding author |
| 700 | 1 | _ | |a Fink, J. M. |0 P:(DE-Juel1)166466 |b 7 |
| 700 | 1 | _ | |a Ando, Yoichi |0 0000-0002-3553-3355 |b 8 |
| 773 | _ | _ | |a 10.1103/PhysRevApplied.17.034032 |g Vol. 17, no. 3, p. 034032 |0 PERI:(DE-600)2760310-6 |n 3 |p 034032 |t Physical review applied |v 17 |y 2022 |x 2331-7019 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/906955/files/PhysRevApplied.17.034032.pdf |y OpenAccess |
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