Donor- or acceptor-based spin qubits with isotopically purified materials

This invention describes a tiny quantum computing component, a spin qubit, built using exceptionally pure semiconductor materials. By reducing isotopes with magnetic nuclei, like specific silicon atoms, the qubit can maintain its quantum state for longer periods, improving its reliability. The design specifies a very thin insulating layer next to the qubit, further enhancing its performance.

Why it matters: Since 2018, the rapid development of quantum computing hardware has intensified the demand for stable, high-coherence qubits. This makes the specialized materials and precise nanofabrication techniques for reducing quantum noise, as detailed here, more technically critical and potentially achievable.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedIsotopically purified materials, nanometer fabrication

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