All papers
Eight-Qubit Operation of a 300 mm SiMOS Foundry-Fabricated Device
In collaboration with imec, Diraq demonstrates eight silicon qubits tuned and operated together on a single foundry-made chip, moving beyond the one- or two-qubit devices typical of this platform. The qubits retained strong coherence, and the team showed reliable multi-qubit readout and gate operation, all steps toward scaling silicon quantum processors to much larger arrays.
Scalable quantum current source on commercial 22-nm CMOS process technology
Evidence that a standard commercial 22-nm CMOS chip can generate a precisely quantized electrical current leads to a proposal for a novel chip design. A million of these current sources working in parallel could offer a practical way of realizing electrical current standards on a tabletop, using ordinary semiconductor manufacturing.
CMOS compatibility of semiconductor spin qubits
A review examining how closely today's semiconductor spin qubits actually align with established CMOS chip-manufacturing practices. It maps out where the requirements of different types of spin qubit diverge from standard industry practice, offering a roadmap for deeper collaboration between qubit developers and semiconductor manufacturers on the path to utility-scale quantum computers.
Investigation of 300mm Process SiMOS Spin Qubit Device Uniformity with Automated Cryogenic Probing
A study investigating how consistently foundry-made silicon spin qubits perform across many devices, using an automated cryogenic probing system that tests chips directly at low temperature. The work combines machine learning with this high-throughput testing to automatically tune and benchmark 16 qubit devices simultaneously.
Industry-compatible silicon spin-qubit unit cells exceeding 99% fidelity
A landmark demonstration that silicon spin qubits built with standard semiconductor foundry tooling can achieve two-qubit gate fidelities above 99%, a threshold previously reached only with custom fabrication. The result shows that high-performing qubits can be reliably fabricated using existing 300-mm industrial processes, paving the way for mass-manufacture of Diraq’s quantum computers.
