IBM Proves Real Quantum Advantage with 70 Logical Qubits in Just 15 Minutes—What’s Different This Time?
\n Quantum Computing: 15 Minutes of Computation Shake Decades of Conventional Wisdom A computation that is difficult to reproduce within a realistic timeframe—even with the world’s most powerful classical supercomputers and the latest algorithms. Researchers from IBM and the University of Chicago announced that they had performed it in just 15 minutes . Taken at face value, “15 minutes” sounds brief. But behind that figure lies a problem the quantum computing industry has struggled to solve for years. Quantum computers are theoretically powerful, yet in real-world hardware, even tiny changes in temperature, electromagnetic noise, and control errors can easily undermine the results. The challenge was not simply calculating quickly—it was calculating accurately all the way to the end . The key to this achievement lies not merely in assembling a large number of qubits. The true protagonists are the 70 logical qubits , designed to withstand errors. Why Logical Qubi...