Quantum Computing Approach Generates First Ever Truly Random Number

The task, which even conventional supercomputers can’t perform, could improve online security and make some processes, such as choosing a jury, truly fair.

By Paul Smaglik
Mar 31, 2025 9:25 PMMar 31, 2025 9:22 PM
Randomized number
(Image Credit: Wall to wall/Shutterstock)

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"That's so random" is a common saying people use when they see or experience something unexpected. But as a concept in physics, true mathematical randomness has long proven elusive — until now. A team of computer scientists using quantum computing methods has, for the first time, generated a truly random number, they report in the journal Nature.

By now you’re asking yourself, what is “true randomness,” anyway? Doesn’t choosing a number between, say, one and a trillion, count as truly random?

Physicists would say “no.” Every existing seemingly random task still operates under physical or mathematical rules.

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