The spin-orbit interaction (SOI) for hole systems can be very strong, allowing for all electrical spin-qubit manipulation, and yet an in depth understanding of this interaction in hole systems is missing. Here we investigate the effect of the cubit Rashba SOI on the mixing of spin states by studying singlet-triplet oscillations in a planar Ge hole double quantum dot (DQD). Landau Zener sweeps at different magnetic field directions allow us to disentangle the effects of the SOI induced spin-flip term from those caused by strongly site dependent g-tensors. Our work, therefore, provides new insights into the hole SOI, necessary for optimizing future qubit experiments.
Title of Poster
Dynamics of hole singlet-triplet qubits with large g-factor difference