Re:Physicists rewrite a quantum rule that clashes with our u...
by whimsicalism on Tuesday September 27, 2022 @02:41AM
(#32992157)
I'll try my best but it has been a few years since quantum for me.
Basically, over time a quantum system can be transformed by applying an operator to the original state to yield the new state. These operators can be represented as a "transformation" between one quantum space to another (the one at the future time).
Because these transformations preserve probability (which is like a norm of the system), they must have a property known as being unitary.
Unitary matrices are invertible, so this is what they mean by "can be undone."
Basically, over time a quantum system can be transformed by applying an operator to the original state to yield the new state. These operators can be represented as a "transformation" between one quantum space to another (the one at the future time).
Because these transformations preserve probability (which is like a norm of the system), they must have a property known as being unitary.
Unitary matrices are invertible, so this is what they mean by "can be undone."