1 citations · 1 across the 4 of their papers we have counts for
4 papers
Extreme-ultraviolet spectroscopy using quantum logic: a feasibility study for the 1S-2S transition in singly-ionized helium
A. Martínez de Velasco, V. P. J. Barbé, E. L. Gründeman +11
Extreme-ultraviolet (XUV) spectroscopy represents an important new direction in precision physics, with potential applications ranging from the metrology of fundamental constants t…
Spectroscopy of the Hyperfine Structure of HD in Rotationally Excited States with 10-ppb Uncertainty
D. Kliukin, V. Barbé, T. Klijn Velderman +5
We report the first measurement of the total hyperfine interval in the manifold of the () rovibrational state of HD using microwave spectroscopy of HD ions in a li…
An Al clock with systematic uncertainty and its frequency ratios
Fabian Dawel, Johannes Kramer, Derwell Drapier +15
Advances in optical clocks motivate a redefinition of the second, requiring rigorous evaluations of systematic uncertainties and robust consistency among the clocks. Here, we repor…
Laser Excitation of the 1S-2S Transition in Singly-Ionized Helium
Elmer L. Gründeman, Vincent Barbé, Andrés Martínez de Velasco +6
Precision laser spectroscopy in the extreme ultraviolet of the 1S-2S two-photon transition in singly-ionized helium is a promising route for tests of fundamental physics. We demons…