Researchers claim a major quantum computing breakthrough by proving the answer was correct

IBM and University of Chicago researchers reported a quantum computing milestone that pairs a hard computation with evidence that the answer is correct.

The team ran an encoded quantum circuit on 70 logical qubits, completing 2,415 logical two-qubit operations and 468 logical T gates in about 15 minutes.

They used error-detection techniques to make the result more verifiable, while saying classical simulation would be impractical.

The work strengthens quantum advantage claims by linking performance gains with a path toward trustworthy verification of future quantum computers.