Speaker
Pierre Chevalier Kwon
(Basel university)
Description
Hole spins in Ge/Si core/shell nanowires show a strong and electrically tunable spin-orbit (SO) interaction, allowing strong coupling between spins and photons. A highly tunable hole spin qubit was demonstrated using this system. However, the readout so far has relied on transport, so the qubit was not operated in the few-hole regime.
We present spectroscopy measurements on Ge/Si nanowire double quantum dot system using a high-impedance NbTiN resonator. Once the DC transport was fully suppressed, we were able to read dozens of transitions using solely spectroscopy. We find first indications of depletion to the last hole. We are aiming now to achieve spin-photon coupling in our system.
Authors
Jann Hinnerk Ungerer
(University of Basel)
Pierre Chevalier Kwon
(Basel university)
Co-authors
Artem Kononov
(University of Basel)
Christian Schönenberger
(University of Basel)
Dominik Zumbühl
(University of Basel)
Erik Bakkers
(Department of Applied Physics, Eindhoven University of Technology, The Netherlands)
Joost Ridderbos
(University of Basel)
Taras Patlatiuk
(University of Basel)
