Thought you were big enough to escape quantum superposition? A recent demonstration by physicist Andrew Cleland and his colleagues at UC Santa Barbara suggests otherwise. Tiny particles have always been subject to quantum effects, but many physicists were skeptical those effects could be reproduced in larger objects. In an amazing leap, Cleland and his team succeeded in demonstrating quantum effects in an object with trillions of atoms, beating the previous record (fewer than 100 atoms) by a factor of over a billion!
Quantum mechanical experiments have long revealed that a particle can exist in a state of superposition, a state that seems to allow it to be in two contradictory states at once. It seems as if a particle can pass simultaneously through two slits, or be in a ground state and an excited state at once, or even take two wildly different paths through an experiment. There are many different explanations for such odd behavior (see below) but the important thing is that until now, these effects were unimaginably small.
According to a recent article in Nature, Cleland’s experiment Continue reading “Quantum Effects are Getting Observably Bigger”