World’s coldest ARM processor
Equal1 in Ireland has successfully tested the world’s most complex and coldest Quantum controller chip using cores from ARM in the UK.
The chip operates close to absolute zero at 300mK to control spin qubits inside the cryostat of a quantum computer, rather than being outside.
This allows improved control, with a Equal1 showing a single qubit gate with fidelity of 99.4% and gate speed of 84ns and a to-qubit gate with fidelity of 98.4% and gate speed of 72ns
These results were achieved on a 6-qubit array fabricated on a silicon germanium (SiGe) CMOS compatible process. The result is a key milestone for full-scale, error-corrected quantum computer processors manufactured by existing silicon chip foundries.
Equal1’s controller chip also has a patented AI enabled Qubit Adaptive Error Correction, tuned for each tile under the support and control of the ARM Cortex core. This allows real-time error correction, combined with the flexibility to use current and future types of error correction algorithms.
Equal1, which is part of the Arm Flexible Access program, developed its own internal Process Design Kit (PDK) and methodologies to predict and optimize logic behavior at cryogenic temperatures for the prototype chip. It plans to use the ARM Cortex A55 core for the next generation controller, with silicon available in the middle of 2025.
“Today marks a critical inflection point for Equal1 and the quantum computing industry. Equal1 has always believed that silicon is the vehicle to scale quantum computers and today, with these world leading qubit and control chip results, we have taken a major step towards this vision,” said Elena Blokhina, Equal1’s Chief Scientific Officer.
Nodar Samkharadze, Equal1’s Chief Quantum Architect said: “This result demonstrates the massive benefit of silicon qubits – the ability to achieve the performance required for scaling in two key areas – fidelity and speed of quantum gates.”
“Quantum commuting has the potential to revolutionise data processing for multiple uses, ranging from complex financial modeling to life-saving drug discovery. With the integration of Arm technology at cryogenic temperatures, Equal1 is at the forefront of building a next-generation Quantum System-on-Chip, and we look forward to continuing our work with them to advance the future of quantum computing,” said Dermot O’Driscoll, Vice President of Product Solutions, Infrastructure Line of Business at ARM.
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
