Suppressed Charge Dispersion via Resonant Tunneling in a Single-Channel Transmon

Authors :: Anders Kringhøj
Peter Krogstrup
Oscar Erlandsson
Karl Petersson
Charles Marcus
B. van Heck
T. W. Larsen
Deividas Sabonis
Lucas Casparis
Source :: Physical Review Letters, 124(24), Physical Review Letters, Kringhoj, A, van Heck, B, Larsen, T W, Erlandsson, O, Sabonis, D, Krogstrup, P, Casparis, L, Petersson, K D & Marcus, C M 2020, ' Suppressed Charge Dispersion via Resonant Tunneling in a Single-Channel Transmon ', Physical Review Letters, vol. 124, no. 24, 246803 . https://doi.org/10.1103/PhysRevLett.124.246803
Publication Year :: 2020
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.

Language :: English
ISSN :: 00319007 and 00213640
Database :: OpenAIRE
Journal :: Physical Review Letters, 124(24), Physical Review Letters, Kringhoj, A, van Heck, B, Larsen, T W, Erlandsson, O, Sabonis, D, Krogstrup, P, Casparis, L, Petersson, K D & Marcus, C M 2020, ' Suppressed Charge Dispersion via Resonant Tunneling in a Single-Channel Transmon ', Physical Review Letters, vol. 124, no. 24, 246803 . https://doi.org/10.1103/PhysRevLett.124.246803
Accession number :: edsair.doi.dedup.....ea2e6c032e76a49a2a85b9af746503bc

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