Optical atomic clocks are our most precise tools to measure time and frequency,–. Precision
frequency comparisons between clocks in separate locations enable one to probe the space …

We study photon scattering errors in stimulated Raman driven quantum logic gates. For
certain parameter regimes, we find that previous simplified models of the process …

We report a precise measurement of the isotope shifts in the 4 2 S 1/2→ 3 2 D 5/2 electric
quadrupole transition at 729 nm in Ca+ 40-42, 44, 48. The measurement has been made via …

A systematic study of Ca+ atomic properties is carried out using a high-precision relativistic
all-order method where all single, double, and partial triple excitations of the Dirac-Fock …

Determination of nuclear moments for many nuclei relies on the computation of hyperfine
constants, with theoretical uncertainties directly affecting the resulting uncertainties of the …

The bound–bound transition from the 5 d 2 6 s 2 F 2 e 3 ground state to the 5 d 6 s 2 6 p D 1
o 3 excited state in negative lanthanum has been proposed as a candidate for laser cooling …

The present work tests the suitability of the narrow transitions 7 s S 1∕ 2 2→ 6 d D 3∕ 2 2
and 7 s S 1∕ 2 2→ 6 d D 5∕ 2 2 in Ra+ for optical frequency standard studies. Our …

The dynamic polarizabilities of the 4 s, 3 d, and 4 p states of Ca+, are calculated using a
relativistic structure model. The wavelengths at which the Stark shifts between different pairs …

The blackbody-radiation (BBR) shift of the 5s–4d 5/2 clock transition in 88 Sr+ is calculated
to be 0.250 (9) Hz at room temperature, T= 300 K, using the relativistic all-order method …

We perform calculations of sd 5/2 nuclear-spin-dependent parity nonconservation
amplitudes for Rb, Cs, Ba+, Yb+, Fr, Ra+, and Ac 2+. These systems prove to be good …