Evidence of 'Negative Time' Found in Quantum Physics Experiment

"Experimental evidence that a photon can spend a negative amount of time in an atom cloud" (2024) https://arxiv.org/abs/2409.03680

Additional indications of retrocausality:

- "Robust continuous time crystal in an electron–nuclear spin system" (2024) https://www.nature.com/articles/s41567-023-02351-6 .. https://news.ycombinator.com/item?id=39291044

Seems similar to the quantum effect where an electron hitting a charge gradient that is larger than the electron's kinetic energy, can still sometimes end up crossing the field boundary and ending up on the other side.

Because, probability of events at that level are a distribution. Even though the chance of crossing is very, very small it isn't zero. So sometimes it happens. Electronic devices are down at Radio Shack that capitalize on this effect, so it's very real.

Now, the distribution of time spent by photons in an atom is shown to sometimes exhibit similar unintuitive-but-definitely-not-impossible transition times? If I understand, which I likely don't.