A concept image of a pair of entangled particles
Victor de Schwanberg/Science Photo Library
A quantum property associated with tiny objects has been found to persist in an experiment with more than a thousand atoms. This could help us understand where the boundary between the quantum world and the macroscopic world lies – if such a boundary exists.
The property for an object in question is two-fold: firstly, that its physical characteristics depend on whether it is being measured and secondly, that it can be influenced over long distances by another object without exchanging any known signals. …
