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Episode 73: Quantum Money with Jiahui Liu

Physics Frontiers

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The Failure of a Quantum Money Scheme

Quantum money is basically like a failed example of the reduction approach that I tried to show. Such a reduction cannot get through simply because in order to do that reduction, you already have to know the secret. But as a public verification algorithm, you should not be able to do that. So it's sort of contradict itself at the very beginning, in some sense.

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