Silicon Quantum Computing

Silicon Quantum Computing is an Australian company, spun out of UNSW Sydney in 2017, that builds quantum processors from individual phosphorus donor atoms placed at precise positions in a silicon crystal. Its fabrication relies on scanning tunnelling microscope hydrogen lithography to pattern atomically precise donor devices, with the electron and nuclear spins of the donors acting as qubits — a spin-qubit approach that draws on standard silicon semiconductor manufacturing. The company has demonstrated few-qubit operations between atomically placed donor spins and is working toward larger, error-corrected atomic-scale processors, positioning it as the leading commercial effort in donor-based silicon spin qubits.

AI-written profile · not yet reviewed · 17 September 2026

Headquarters: Sydney, Australia
Founded: 2017
Status: Private

spin qubit

Investors University of New South Wales, Telstra, Commonwealth Bank of Australia, Australian Government, New South Wales Government

Coverage

Quantum Zeitgeist14 September 2026

SQC’s quantum machine learning cuts chip design time from hours to minutes

Silicon Quantum Computing reported that patterning its Watermelon quantum-enhanced AI chip, a step that previously took hours by hand, can now be completed in minutes. The company used custom machine learning scripts together with its Quokka software to automate part of the atomic-precision fabrication process.

OutlookPlausible

Faster patterning could let SQC iterate on atomic-precision device designs much more rapidly, turning hours-long manual layout cycles into quick parameter sweeps.

spin qubitSilicon Quantum Computing