Hole spin in tunable Ge hut wire double quantum dot
arXiv:2001.04834 · doi:10.35848/1882-0786/ab8b6d
Abstract
Holes in germanium (Ge) exhibit strong spin-orbit interaction, which can be exploited for fast and all-electrical manipulation of spin states. Here, we report transport experiments in a tunable Ge hut wire hole double quantum dot. We observe the signatures of Pauli spin blockade (PSB) with a large singlet-triplet energy splitting of ~1.1 meV and extract the g factor. By analyzing the the PSB leakage current, we obtain a spin-orbit length l_so of ~ 40-100 nm. Furthermore, we demonstrate the electric dipole spin resonance. These results lay a solid foundation for implementing high quality tunable hole spin-orbit qubits.
13 pages,4 figures
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- Ultrafast coherent control of a hole spin qubit in a germanium quantum dot
- Gate-Tunable Spin-Orbit Coupling in a Germanium Hole Double Quantum Dot
- Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit
- Dipole coupling of a tunable hole double quantum dot in germanium hut wire to a microwave resonator
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