Belgium research hub Imec and quantum computing chipmaker Diraq has demonstrated an eight silicon MOS spin-qubit array using Imec’s 300 mm spin-qubit technology platform based on a CMOS-compatible process.
The demonstration is a step toward scalable quantum processors manufactured on the same technologies used to produce advanced semiconductors.
Silicon spin qubits are considered a promising path to large-scale production of quantum computing due to its ability to use the same infrastructure already in place across the silicon chip ecosystem.
The eight-qubit devices were fabricated on Imec’s 300 mm silicon spin-quibit platform that allows the manufacturing to bridge the gap between lab demos and manufacturable quantum technologies, Imec said.
"The future of quantum computing depends not only on qubit quality but also on the ability to manufacture increasingly complex quantum processors with the reproducibility, yield and scale of the semiconductor industry," said Kristiaan De Greve, fellow and program director quantum computing at Imec. "This result demonstrates that industrial 300 mm CMOS-compatible manufacturing can support quantum systems beyond isolated qubit pairs.”
Greve added that combining Imec’s semiconductor process technology with quantum device engineering it is one of the critical steps toward realizing silicon-based quantum processors.
Diraq said nine months ago the company showed silicon MOS qubits could be fabricated using Imec’s 300 mm CMOS platform. Now, Imec has scaled and tested the size of the array using the same process.
The full research into the demonstration can be found in the journal Nature Communications.
