C. Schneider
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
The fluxonium qubit, a small Josephson junction shunted by a superinductance, offers large anharmonicity, protection from charge noise, and coherence times beyond the millisecond, making it a compelling alternative to the transmon. I will present our recent progress in developing fluxonium as a scalable platform. First, I will discuss improvements in our junction fabrication process, benchmarked using junction-array resonators that probe array uniformity and internal losses and feed back directly into process development. I will then present results on single-qubit control, including calibration strategies adapted to fluxonium's rich level structure. Finally, I will show early results on multi-qubit devices and discuss the architectural choices that make fluxonium a credible candidate for scaling.
C. Schneider
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
J. Schirk
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
F. Wallner
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
N. Bruckmoser
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
L. Huang
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
M. Zetzl
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
S. Filipp
(Techical University of Munich, School of Natural Sciences, Department of Physics, 85748 Garching, Germany Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 86748 Garching, Germany)
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