From Feynman's napkin math to Google's Willow chip — the full history of quantum computing in one video.In 1981, Richard Feynman stood up at a conference and pointed out something inconvenient: nature isn't classical, so if you want to simulate it, you'd better build a computer that isn't classical either. Forty-five years later, that offhandchallenge has become a global race involving IBM, Google, Microsoft, national governments, and everyone who has ever worried about what happens to encryption when the machines finally work.This video traces the whole arc: the physics that made it thinkable, the algorithms that made it dangerous, the decades of engineering that made it real, and the error-correction milestones that decide whether any of it matters.
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