activity
20022022
most citedFrequency Comparison of Two High-Accuracy Al+ Optical Clocks

894 citations · 4.3k across the 23 of their papers we have counts for

collaborators

23 papers

physics.atom-ph2022★ 16 cited

Rotational spectroscopy of a single molecular ion at sub part-per-trillion resolution

Alejandra L. Collopy, Julian Schmidt, Dietrich Leibfried +2

We use quantum-logic spectroscopy (QLS) and interrogate rotational transitions of a single CaH+ ion with a highly coherent frequency comb, achieving a fractional statistical uncert…

quant-ph2019★ 101 cited

Quantum entanglement between an atom and a molecule

Yiheng Lin, David R. Leibrandt, Dietrich Leibfried +1

Conventional information processors freely convert information between different physical carriers to process, store, or transmit information. It seems plausible that quantum infor…

physics.atom-ph2019★ 77 cited

Precision frequency-comb terahertz spectroscopy on pure quantum states of a single molecular ion

Chin-wen Chou, Alejandra L. Collopy, Christoph Kurz +7

Spectroscopy is a powerful tool for studying molecules and is commonly performed on large thermal molecular ensembles that are perturbed by motional shifts and interactions with th…

physics.atom-ph2019★ 34 cited

Measurements of Al and Mg magnetic constants for improved ion clock accuracy

S. M. Brewer, J. -S. Chen, K. Beloy +14

We have measured the quadratic Zeeman coefficient for the optical clock transition in Al, ~MHz/T, an…

physics.atom-ph2019★ 31 cited

Systematic uncertainty due to background-gas collisions in trapped-ion optical clocks

A. M. Hankin, E. R. Clements, Y. Huang +5

We describe a framework for calculating the frequency shift and uncertainty of trapped-ion optical atomic clocks caused by background-gas collisions, and apply this framework to an…

physics.atom-ph2016★ 199 cited

Preparation and coherent manipulation of pure quantum states of a single molecular ion

Chin-wen Chou, Christoph Kurz, David B. Hume +3

Laser cooling and trapping of atoms and atomic ions has led to numerous advances including the observation of exotic phases of matter, development of exquisite sensors and state-of…