Electrical manipulation of a hole `spin'-orbit qubit in nanowire quantum dot: the nontrivial magnetic field effects
Rui Li,
Hang Zhang
Abstract:Strong 'spin'-orbit coupled one-dimensional hole gas is achievable in a Ge nanowire in the presence of a strong magnetic field. The strong magnetic field lifts the spin-degeneracy in the hole subband dispersions, such that the remaining (spinless) low-energy subband dispersion exhibits strong 'spin'orbit coupling. Recent experimental study in a Ge nanowire hole quantum dot [Froning et al. Nat. Nanotechnol. 16, 308 (2021)] has demonstrated a strong electrical Rabi frequency (∼200 MHz) and a non-vanishing longi… Show more
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