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Silicon Quantum Computing

Australian quantum computing company founded in 2017 that builds atomic-scale silicon and phosphorus quantum processors and quantum-enhanced AI and simulation products.

Last updated October 7, 2026

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Overview

Silicon Quantum Computing (SQC) is a quantum computing company founded in 2017, building on 25+ years of proven materials engineering. Its quantum processors contain only two types of atoms — silicon (14) and phosphorus (15) — a simplicity that SQC states enables useful algorithms and a superior reduction in bit flip errors. SQC develops both analogue and error-corrected processors and describes full-stack capability from atomic-scale processor manufacturing to integrated hardware, classical control systems, and software. Products available now include Watermelon™, a quantum feature generator for classical machine learning workflows, and Quantum Twins™, a quantum analogue simulator for chemicals and materials design; the Chilli Series of gate-based processors is listed as available soon. Products are made accessible via SQC Cloud and on-prem hardware. SQC's Founder and CEO is Professor Michelle Simmons, described as a pioneer of atomic electronics.

History

Silicon Quantum Computing was founded in 2017, building on 25+ years of proven materials engineering. The company states that its quantum processors contain only two types of atoms — silicon (14) and phosphorus (15) — and that this simplicity enables the ability to execute useful algorithms. SQC develops both analogue and error-corrected processors, with fully integrated in-house manufacturing enabling it to develop tools, processes, and integrated processors in parallel and at speed. Its Founder and CEO is Professor Michelle Simmons, described as an internationally acclaimed physicist and materials scientist renowned for creating the field of atomic electronics, who over 25+ years invented the process for manufacturing in silicon at atomic scale and developed both the world's first single-atom transistor and the first integrated circuit made with atomic precision. SQC states it is a leader in the global race to deliver a universal, fault-tolerant quantum computer, with a stated target of 2033 for universal, fault-tolerant quantum computers.

Products and positioning

A materials science approach to quantum computing, with atomic-scale silicon and phosphorus processors and full-stack control from manufacturing to software.

  • Watermelon™

    A quantum feature generator for classical machine learning workflows, exploiting quantum mechanics to identify hidden insights and value in data; available to purchase and via cloud access.

  • Quantum Twins™

    A quantum analogue simulator for chemicals and materials design; custom chips physically encode direct analogs of a desired quantum system; available via direct contract with SQC.

  • Chilli Series

    Gate-based processors for experimentation and advancement; listed as available soon.

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