Silicon Quantum Computing (SQC), a Sydney-based pioneer in quantum technologies, is positioning itself at the forefront of a global race to build the world’s first scalable, fault-tolerant quantum computer. Founded in 2017 by renowned quantum physicist Professor Michelle Simmons AO, the company is spearheading efforts to revolutionise computing through atomically precise silicon-based hardware.
Atom by Atom: A Technological Milestone
SQC’s work builds upon decades of ground-breaking research in quantum science. The company’s achievements include several world-first milestones, such as the development of the single-atom transistor in 2012, the 3D atomic transistor in 2019, and the integrated atomic-precision quantum circuit in 2022. These breakthroughs lay the foundations for SQC’s unique technology, a platform that manipulates individual phosphorus atoms in silicon with atomic precision to create high-fidelity quantum processors.
Unlike other organisations in the sector, SQC operates a fully vertically integrated model, handling the design, manufacturing, testing and refinement of its quantum chips entirely in-house. Its state-of-the-art cleanroom facilities at the University of New South Wales (UNSW) enable the company to produce new chip designs on a weekly basis, a capability that is unmatched globally.
Leadership Driving Innovation
At the helm is Professor Michelle Simmons, whose leadership and scientific vision have established Australia as a key player in the international quantum computing landscape. She is supported by a distinguished team that includes industry leaders such as Simon Segars, former CEO of ARM Holdings. Together, SQC’s executive team brings a wealth of experience spanning technology, engineering, law and finance, all dedicated to translating scientific advances into commercial realities.
Why Silicon Quantum Computing Stands Apart
Atomic Precision: SQC remains the only organisation worldwide placing individual atoms in silicon for the purpose of quantum computing, a precision-led approach that sets it apart from competitors.
World-Leading Performance: In 2025, the company’s four-qubit silicon processor achieved 98.87% fidelity running Grover’s algorithm, placing it among the highest-performing quantum devices globally.
Full-Stack Capability: SQC’s end-to-end capabilities, from design through to fabrication and testing, allow it to innovate with agility and maintain control over every stage of development.
A Visionary Roadmap: With clear milestones set, SQC is progressing from today’s prototypes towards delivering a universal quantum computer by the mid-2030s.
Building the Future of Computing
Quantum computing holds the promise of unlocking solutions to problems beyond the reach of classical computers, spanning fields such as drug discovery, financial modelling and climate science. Through precision, discipline and innovation, SQC is laying the essential groundwork for this transformative future.
Importantly, SQC’s work reflects not just Australian technological excellence but a contribution to a global frontier of innovation that will shape the decades ahead.
A Global Mission Rooted in Australia
Silicon Quantum Computing acknowledges the profound responsibility attached to developing technologies of this magnitude. The company’s progress is a testament to the commitment of a world-class team driven by scientific integrity and a focus on real-world applications.
As SQC looks ahead to delivering fault-tolerant, commercially viable quantum systems, it continues to welcome partnerships and collaborations with those who share its vision. From Sydney to the world, Silicon Quantum Computing is shaping the future of technology, one atom at a time.