A Spin Quantum Bit Architecture with Coupled Donors and Quantum Dots in Silicon

Spins of donor electrons and nuclei in silicon are promising quantum

bit (qubit) candidates that combine long coherence times with

the fabrication finesse of the silicon nanotechnology industry.

We outline a potentially scalable spin qubit architecture where

donor nuclear and electron spins are coupled to spins of electrons

in quantum dots and discuss requirements for donor placement

aligned to quantum dots by single-ion implantation.