Image of a pair of intertwined particles
Victor de Schwanberg/Science Photo Library
Quantum properties associated with small objects have been found to persist in experiments with more than 1,000 atoms. This helps us understand where the boundaries between the quantum and macroscopic worlds lie – if such boundaries exist.
The properties of the object in question have two elements. First, its physical properties depend on what it is being measured, and second, it can be affected over long distances by another object without exchanging a known signal. …
