SYDNEY, Australia (1 August 2025) — Diraq has partnered with new venture Iceberg Quantum to extract early value from its quantum computers.

Diraq has a clear line of sight towards delivering quantum computers that are utility scale, the point at which commercial value exceeds operational cost. This journey is driven by more than two decades of deep technical expertise in silicon ‘quantum dot’ technology, and it is being accelerated by Diraq’s strong partnerships across the quantum-computing stack.

The most recent addition to Diraq’s network is Iceberg Quantum, a company that will provide crucial expertise in a class of error-correction techniques called quantum low-density parity-check (qLDPC) codes.

Diraq plans to use a well-tested strategy known as the surface code to correct the errors that arise from the fragile nature of quantum information. But this code requires around 1,000 quantum bits (qubits) to implement a ‘logical’ qubit capable of useful quantum operations. Iceberg’s qLDPC codes promise to achieve fault tolerance with fewer than 100 qubits per logical qubit.

Diraq’s architecture makes qLDPC codes straightforward to implement because the electron-shuttling mechanism developed by the team enables distant qubits to interact. However, qLDPC codes require more operations than the surface code, which could make computation more complicated.

Understanding this trade-off is one aspect of the subject-matter expertise that Iceberg brings to its partnership with Diraq. The company recently just spun out from the University of Sydney, and the three co-founders trained under world-leading theorist Stephen Bartlett, himself an auspicious addition to Diraq’s senior leadership team.

The remarkable speed of Diraq’s qubit operations leaves little doubt that Iceberg’s qLDPC codes will bring early value to Diraq’s prototypes. As the company progresses along its roadmap to utility scale, its early prototypes will benefit from any reduction in the number of qubits required to perform meaningful error correction.

“Ultimately, when Diraq’s chips contain the millions of qubits made possible by our silicon technology, Iceberg’s qLDPC codes will continue to form a key component of our error-correction strategy,” said Diraq’s Head of Theory, Dr Andre Saraiva. “Early value from our smaller prototypes is the icing on the cake.”

Diraq is a global leader in building quantum processors using silicon ‘quantum dot’ technology, leveraging proprietary technology developed over 20 years of research. Diraq is a private company, founded in 2022 and headquartered in Sydney, Australia, with operations in Palo Alto, California, and Boston, Massachusetts. Our approach relies on the existing silicon manufacturing processes, known as CMOS, used by foundries to produce today’s semiconductor components. By capitalizing on existing high-volume chip fabrication technology and semiconductor manufacturing capabilities, Diraq is accelerating the change that can transform computing as we know it. Diraq’s platform architecture is purpose-built to drive the significant processing advances required to reduce cost and energy barriers, and to realize quantum computing’s full societal and economic potential, forging a faster and cheaper road to market. Diraq’s goal is to revolutionize quantum computing by driving qubit numbers on a single chip to the many millions, and ultimately billions needed for useful commercial applications.

Iceberg Quantum is a quantum architecture company designing the next generation of fault-tolerant architectures based on LDPC codes. Founded in 2024 by Felix Thomsen, Sam Smith and Larry Cohen — PhD graduates from the University of Sydney’s world-leading quantum error correction group led by Prof. Stephen Bartlett — Iceberg is developing architectures that reduce the overhead for quantum error correction by over an order of magnitude, making useful quantum computing possible much sooner and with far fewer qubits. Backed by leading global VCs Blackbird Ventures and LocalGlobe, Iceberg is rapidly building the world’s best fault tolerance research lab, and partnering with leading quantum hardware companies to turn cutting-edge research into real-world implementations. For more information, visit www.iceberg-quantum.com.