Physicists Break Record with Fat Schrödinger's Cat Experiment.

Researchers at ETH Zurich have created the heaviest Schrödinger cat to date by putting a crystal in a superposition of two oscillation states, which could lead to more robust quantum bits and help to explain why quantum superpositions are not observed in everyday life. The oscillating crystal represents the cat, whereas the decaying atom is emulated by a superconducting circuit coupled to the crystal. The link between the qubit and the crystal “cat” is a layer of piezoelectric material that creates an electric field when the crystal changes shape while oscillating.