Scaling up quantum effects with vibrating crystals and sapphire Schrödinger's cat.
Physicists have used a device that includes a vibrating sapphire crystal to demonstrate that even objects larger than atoms can be in a superposition, confirming the famous Schrödinger's cat thought experiment. The experiment shows that an object can be in two simultaneous vibrating states, just like the cat that is both dead and alive in the thought experiment.