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Superconducting Qubits
Suppressed Charge Dispersion via Resonant Tunneling in a Single-Channel Transmon
arXiv
Authors: A. Kringhøj, B. van Heck, T. W. Larsen, O. Erlandsson, D. Sabonis, P. Krogstrup, L. Casparis, K. D. Petersson, C. M. Marcus
Year
2019
Paper ID
14614
Status
Preprint
Abstract Read
~2 min
Abstract Words
58
Citations
N/A
Abstract
We demonstrate strong suppression of charge dispersion in a semiconductor-based transmon qubit across Josephson resonances associated with a quantum dot in the junction. On resonance, dispersion is drastically reduced compared to conventional transmons with corresponding Josephson and charging energies. We develop a model of qubit dispersion for a single-channel resonance, which is in quantitative agreement with experimental data.
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- This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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- We demonstrate strong suppression of charge dispersion in a semiconductor-based transmon qubit across Josephson resonances associated with a quantum dot in the junction.
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