Trapped-ion quantum computing company Universal Quantum has launched the iQPU, an integrated quantum processing unit (QPU) which the company says is designed to make quantum computers practical to manufacture, scale and deploy cost effectively. Combining a trapped-ion compute surface with built-in ultra-low noise control technology and modular chip-to-chip interconnect (UQConnect) interfaces, the iQPU is meant to address scaling challenges in utility scale quantum computing.
Quantum computing has advanced rapidly, but most systems were not designed to scale from the outset. As qubit numbers grow, each increase can demand substantial redesign across the architecture. According to Universal Quantum, the company has taken another approach and created the iQPU with a different philosophy: scaling is engineered into the system from the ground up.
“The question is no longer whether quantum computing can work, but how we build enough high-quality qubits to solve problems that matter,” said Sebastian Weidt, CEO and Co-Founder of Universal Quantum. “The iQPU allows us to combine our world record interconnect technology with a chip architecture that can control qubits at scale and is manufactured in commercial silicon foundries. It opens up an exciting route for us from today’s systems to the utility-scale quantum computers the world needs.”
A chip built to scale quantum compute
At the centre of the platform is the iQPU, a trapped-ion processor chip that the company claims has an active compute area of more than 400mm². It utilises a Quantum Charge-Coupled Device (QCCD) architecture, which moves ions across the chip and enables flexible, long-range connections between qubits rather than fixing each qubit to a single location. This approach, says the company, reduces the number of qubits required to solve commercial problems and speeds up computations.
The processor is fabricated on a commercial 200mm semiconductor foundry line using industry-standard design and manufacturing tools. According to the company, this matters because scaling quantum computers requires components that can be produced repeatedly and at low cost, tested reliably and integrated through mature supply chains.
UQConnect, Universal Quantum’s modular interconnect technology, allows separate processors to exchange quantum information and operate as one larger computer. Instead of redesigning the entire machine whenever more capacity is needed, additional iQPUs can be connected using the same underlying architecture, says the company.
The result, claims Universal Quantum, is a complete scaling strategy: the iQPU provides the repeatable unit of quantum computation; integrated control reduces the amount of external hardware needed to operate it and addresses the ‘wiring problem’; and UQConnect supplies the links between modules. The architecture is designed to support efficient error correction while avoiding the impractical growth in wiring, lasers and cooling infrastructure that can accompany other approaches.
“A scalable quantum computer cannot be assembled by adding complexity one qubit at a time,” said Mike Newman, VP of Engineering at Universal Quantum. “We have brought the ion trap, control electronics and modular connections together in one chip, so the same engineered unit can be manufactured, tested and connected repeatedly to scale to much more powerful quantum computers. That is what turns scale from a scientific aspiration into a practical systems challenge we can solve.”
The iQPU will be integrated into the systems Universal Quantum is currently building for its customers including for the German Aerospace Center (DLR), for which the company has received contracts worth €67 million (USD 75) for two scalable quantum computers which will support the DLR in exploring applications including space mission planning, climate modelling and materials design.
