Hacker News with Generative AI: Atomic Physics

Experimental evidence photon can spend negative amount of time in an atom cloud (arxiv.org)
Coherent spin dynamics between electron and nucleus within a single atom (nature.com)
The nuclear spin, being much more isolated from the environment than its electronic counterpart, presents opportunities for quantum experiments with prolonged coherence times.
The first nuclear clock will test if fundamental constants change (quantamagazine.org)
An ultra-precise measurement of a transition in the hearts of thorium atoms gives physicists a tool to probe the forces that bind the universe.