Qubit ZooFoundational proposal for spin-based quantum computing in semiconductor quantum dots. Introduces the Loss-DiVincenzo qubit: a single electron spin in a gate-defined quantum dot, with two-qubit gates via the exchange interaction controlled by tunnel barrier voltages.
Key Results
- Single electron spin as qubit (Zeeman-split |↑⟩, |↓⟩)
- Exchange interaction J(t) for two-qubit √SWAP gate
- Readout via spin-to-charge conversion
- Estimated gate times ~1 ns, decoherence times ~1 μs (GaAs, 1998 estimates)
Links
- Journal: Physical Review A
- arXiv: cond-mat/9701055