Hybridization and Spin Decoherence in Heavy-Hole Quantum Dots
Hybridization and Spin Decoherence in Heavy-Hole Quantum Dots
We theoretically investigate the spin dynamics of a heavy hole confined to an unstrained III-V semiconductor quantum dot and interacting with a narrowed nuclear-spin bath. We show that band hybridization leads to an exponential decay of hole-spin superpositions due to hyperfine-mediated nuclear pair flips, and that the accordant single-hole-spin decoherence …