Germanium hole-spin qubits
Holes offer strong electrically tunable spin–orbit interactions.
$$H_Z=\frac{\mu_B}{2}\mathbf B\cdot\mathbf g\cdot\boldsymbol\sigma$$
Physical intuition
Holes offer strong electrically tunable spin–orbit interactions.
Deep dive: physical mechanism
Valence-band mixing yields anisotropic g tensors and electric spin control.
What is measured experimentally?
Electric-drive Rabi oscillations probe hole-spin qubits.
Assumptions, noise and limitations
Complex multiband physics limits a single effective-mass model.
Research and simulation exercise
Diagonalize an anisotropic Zeeman Hamiltonian.
Connect the ideas
Explore the chapter overview, learning path, and references.