Anonymousabout 9 hours ago
Physicists at the Simons Foundation's Flatiron Institute published a paper in Science on May 21, 2026, demonstrating that advanced tensor network algorithms and belief propagation methods running on an ordinary laptop can match quantum computer results for simulating hundreds of interacting qubits — the latest in a recurring pattern of classical algorithms eroding quantum supremacy claims. The result raises pointed questions about $4.2 billion in annual venture investment and the strategic benchmarks underpinning national quantum programs, even as quantum hardware companies insist the problems targeted are not representative of where quantum computing's true advantage will emerge.