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Are the qubits physical or logical? Is there a paper, and who checked it? A reader can judge a quantum computing announcement with seven questions, each shown here with a 2026 case and the document that answers it.
Alice & Bob's new count is about a quarter of its 2024 estimate. The authors assumed cat qubits that keep their value for about 100 years. Researchers have measured up to 22 seconds under full control.
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.
