3 papers
physics.atom-ph2026
A metastable state in with lifetime greater than 10 minutes
Hassan Farhat, William Liu, Wesley C. Campbell
We find through direct, time-domain measurement of trapped ions that the excited state has a collision-free lifetime of 17.8(6) min, long enoug…
physics.atom-ph2026
Sub-hertz optical transitions in excited Yb
Patrick McMillin, Hassan Farhat, William Liu +1
We present the observation of three semi-forbidden transitions in singly-ionized ytterbium from the metastable state. Owing to the long lifetimes of both t…
quant-ph2025
Angular Geometry of Atomic Multipole Transitions
Wesley C. Campbell
A simple way to calculate Rabi frequencies is outlined for interactions of atomic or nuclear multipole moments with laser fields that focuses on their relative geometry. The result…