Researchers took a beam of neutrons and separated them from their magnetic moment, like passengers and their baggage at airport security.
Assuming their interpretation of their data is correct, what this means is they took a particle — a neutron — and sent the particle one way and one of its quantum properties another way.
I sure hope they can separate me from my headache. Quantum mechanics in general is a pain, but this is worse than usual.
By the way, the researchers’ paper has a great title: Observation of a quantum Cheshire Cat in a matter-wave interferometer experiment.