34 stories
Show: Summaries / Headlines only
Silicon spin qubits now come from 300 mm lines at imec, Intel, and STMicroelectronics. No maker has yet shown a fab supplying enriched silicon, qubits uniform enough to tune automatically at scale, or control electronics within a million-qubit power budget.
McKinsey took its $15.3 billion for China's public quantum funding from CIFAR, which converted a reported ¥100 billion for one national laboratory in 2021. No published Chinese budget confirms it. A congressman has described it as investment.
Researchers have fit Shor's algorithm into 9,739 neutral-atom physical qubits, with elliptic-curve runs that lengthen from 10 days to about 1,000 as the count falls. The authors assumed error rates and clock speeds no machine has shown together.
In PNAS, Oxford's Tim Palmer proposed that quantum computers lose their advantage above about 1,000 perfect qubits. He wrote that his theory and standard quantum mechanics agree on small systems. No experiment has yet tested where they differ.
