Rapid progress in optical atomic clock performance has advanced the frontiers of
timekee**, metrology and quantum science,–. Despite considerable efforts, the …

We measure isotope shifts for five Yb+ isotopes with zero nuclear spin on two narrow optical
quadrupole transitions S 2 1/2→ D 2 3/2, S 2 1/2→ D 2 5/2 with an accuracy of∼ 300 Hz …

We report measurements of isotope shifts for the five spinless Yb isotopes on the 6 s 2 S 0
1→ 5 d 6 s D 2 1 transition using Doppler-free two-photon spectroscopy. We combine these …

Shifts in the frequency of atomic spectral lines between different isotopes can be used to
reveal subtle changes in the properties of nuclei. With the advent of ultra-high-precision …

Atomic spectral lines for different isotopes are shifted, revealing a change in the properties of
the nucleus. For spinless nuclei such isotope shifts for two distinct transitions are expected to …

We demonstrate state-dependent optical lattices for the Sr optical qubit at the tune-out
wavelength for its ground state. We tightly trap excited state atoms while suppressing the …

We present a detailed investigation of the ultranarrow magnetic-quadrupole S 0 1-P 2 3
transition in neutral strontium and show how it can be made accessible for quantum …

Promising searches for new physics beyond the current standard model (SM) of particle
physics are feasible through isotope-shift spectroscopy, which is sensitive to a hypothetical …

Investigations of isotope shifts of atomic spectral lines provide insights into nuclear
properties. Deviations from the linear dependence of the isotope shifts of two atomic …

We report a precise measurement of the isotope shifts in the 4 S 1/2 2→ 3 D 3/2 2 electric
quadrupole transition at 732 nm in Ca+ 42, 44, 48 relative to Ca+ 40 via high-resolution …