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Quantum randomness of empty space can be controlled with a laser


The experimental setup passes light through lenses, mirrors and a crystal

Charles Roques-Carmes, Yannick Salamin

Empty space is not actually empty – it is filled with tiny flickers of quantum fields. Boosting those flickers with very weak laser light can turn the apparent nothingness into a building block for a new kind of light-based computer.

“Suppose you had a completely empty, dark box and then you put an electric field detector inside the box. If you averaged all its measurements you would get zero, but each individual measurement would be a little more or a …

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