The quantum Cheshire Cat is a famous experiment that’s attracted a lot of attention in the past decade.
In this experiment, a particle is supposedly separated from one of its properties, for example its spin or polarization.
It’s called the Cheshire cat because that particle is kind of like the cat and its disembodied property is kind of like the grin of the cat.
But maybe I should better say there was this famous experiment, because it was just debunked in a new paper. Let’s have a look.