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China's 25μs quantum feat
China’s Jiuzhang 4.0 quantum computer completed a Gaussian boson sampling task in 25.6 microseconds using 3,090 photons—a record roughly ten times higher than previous records. The experimenters estimated that simulating the task on the El Capitan supercomputer would take 10⁴² years. However, the achievement concerns a benchmark problem and does not yet demonstrate quantum advantage in practical tasks.
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