What time does a clock tell after quantum tunneling?

Does the particle kinda jump through the barrier with no time passing? Or do they both move at the same speed just that one takes the forbidden path, so to speak.

The key feature of quantum mechanics is that all particles are also waves. This means, among other things, that they have an internal clock, because waves change periodically. We can’t actually measure this waving for one single particle but we can measure the difference between two particles which is how interferometers work.

They haven’t actually done the experiment yet, the paper just explains how it would work. It proposes to create entangled pairs of atoms that start out being synchronized in their waving, let one run into the wall, and the other one past it, and then compare the results. That should allow them to figure out what’s actually going on.

In AWT we can model tunneling with basin, in which surface ripples overcome obstacles through extradimensions of surface, i.e. through underwater. Yes, underwater waves are faster than surface ripples, but they mediate energy across obstacles in indeterministic way.