Nickl et al. 2026 — Eight-qubit operation of a 300 mm SiMOS foundry-fabricated device

Citation

A. Nickl et al., “Eight-qubit operation of a 300 mm SiMOS foundry-fabricated device,” Nature Communications 17, 5878 (2026) · arXiv:2512.10174.

Key Results

• Tuned and coherently controlled an eight-spin linear array fabricated in a 300-mm SiMOS foundry process
• Reported $T_2^{\ast }$ up to 41(2) μs and Hahn-echo coherence up to 1.31(4) ms
• Demonstrated cascaded readout of the central four qubits and exchange control in one double-dot pair
• Did not yet demonstrate a high-fidelity entangling gate across the eight-qubit array

Linked Entries

• spin-qubit
• silicon-spin-qubit