A spin quantum bit architecture with coupled donors and quantum dots in silicon

TL;DR

This paper proposes a scalable silicon-based spin qubit architecture utilizing coupled donor and quantum dot spins, emphasizing fabrication techniques like single ion implantation for precise donor placement.

Contribution

It introduces a novel architecture integrating donor and quantum dot spins in silicon, highlighting fabrication methods for scalability.

Findings

Potential for long coherence times in silicon spin qubits

Feasibility of donor placement aligned with quantum dots

Scalability prospects for silicon-based quantum computing

Abstract

Spins of donor electrons and nuclei in silicon are promising quantum bit (qubit) candidates which 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.