381 citations · 1.2k across the 12 of their papers we have counts for
10 papers · 1 filter
Phase-continuous comparison of three all-optical time scales over 20 days
Dahyeon Lee, Kyungtae Kim, Zoey Z. Hu +11
Optical frequency standards have progressed rapidly over the past two decades, leading to the anticipated redefinition of the SI second by an optical frequency. However, time scale…
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…
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…
3-D Magneto-Optical Trap of Yttrium Monoxide
Alejandra L. Collopy, Shiqian Ding, Yewei Wu +5
We report three-dimensional trapping of an oxide molecule (YO), using a radio-frequency magneto-optical trap (MOT). The total number of molecules loaded is 1.5 ,…
Radio Frequency Magneto-Optical Trapping of CaF with High Density
Loic Anderegg, Benjamin Augenbraun, Eunmi Chae +7
We demonstrate significantly improved magneto-optical trapping of molecules using a very slow cryogenic beam source and RF modulated and DC magnetic fields. The RF MOT confines $1.…
One dimensional magneto-optical compression of a cold CaF molecular beam
Eunmi Chae, Loic Anderegg, Benjamin L. Augenbraun +7
We demonstrate with a RF-MOT the one dimensional, transverse magneto-optical compression of a cold beam of calcium monofluoride (CaF). By continually alternating the magnetic field…