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.
Original language | English |
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Article number | 246803 |
Number of pages | 6 |
Journal | Physical Review Letters |
Volume | 124 |
Issue number | 24 |
DOIs | |
Publication status | Published - 2020 |