Physicists Just Achieved 'Perfect Randomness' For The First Time Ever

ETH Zurich physicists used entangled qubits in a Bell test to amplify weak randomness into certifiably unpredictable output.

They ran more than a billion Bell-test trials with two qubits separated by 30 meters, pushing the experiment to a major scale.

The result shows how flawed random inputs can be converted into randomness that is provably secure.

That matters for cryptography, secure authentication, and any system that relies on unguessable keys or codes.