An asymmetric three-donor silicon module uses one ancilla donor as both a frequency-shifting addressor and a tunable superexchange mediator, with modeled gate fidelities above 99%.
A spin quantum bit architecture with coupled donors and quantum dots in silicon
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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.
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An Addressable and Tunable Module for Donor-based Scalable Silicon Quantum Computing
An asymmetric three-donor silicon module uses one ancilla donor as both a frequency-shifting addressor and a tunable superexchange mediator, with modeled gate fidelities above 99%.