Speaker
Artemii Efimov
Description
We characterize the Ge/Si core/shell nanowires extracting their field effect mobility for various growth parameters. For this, COMSOL simulations are performed to calculate numerically the backgate-to-nanowire capacitance of a realistic device. The observation of sweet spots of the Hahn-echo coherence time of a qubit formed in such a nanowire suggests the presence of low-frequency charge noise. We work on improving nanowire materials to enhance the spin coherence for a new generation of qubit experiments.
Author
Artemii Efimov
Co-authors
Miguel Carballido
(University of Basel)
Pierre Chevalier Kwon
(University of Basel)
Simon Svab
Taras Patlatiuk
(University of Basel)
Nicolas Forrer
Ilaria Zardo
(University of Basel)
Erik Bakkers
(Department of Applied Physics, Eindhoven University of Technology, The Netherlands)
Dominik Zumbühl
(University of Basel)
