46 citations · 212 across the 7 of their papers we have counts for
7 papers
observation of non-polar to strongly polar atom-ion collision dynamics
Moritz Berngruber, Daniel J. Bosworth, Oscar A. Herrera-Sancho +8
The onset of collision dynamics between an ion and a Rydberg atom is studied in a regime characterized by a multitude of collision channels. These channels arise from coupling betw…
A pulsed ion microscope to probe quantum gases
C. Veit, N. Zuber, O. A. Herrera-Sancho +5
The advent of the quantum gas microscope allowed for the in situ probing of ultracold gaseous matter on an unprecedented level of spatial resolution. The study of phenomena on ever…
Frequency measurement of the transition of Al via quantum logic spectroscopy with Ca
Michael Guggemos, Milena Guevara-Bertsch, Daniel Heinrich +4
We perform quantum logic spectroscopy with a Al/Ca mixed ion crystal in a linear Paul trap for a measurement of the $(3s^{2})\,^{1}\mathrm{S}_{0} \leftrig…
Sympathetic cooling and detection of a hot trapped ion by a cold one
M. Guggemos, D. Heinrich, O. A. Herrera-Sancho +2
We investigate the dynamics of an ion sympathetically cooled by another laser-cooled ion or small ion crystal. To this end, we develop simple models of the cooling dynamics in the…
Energy levels of Th+ between 7.3 and 8.3 eV
O. A. Herrera-Sancho, N. Nemitz, M. V. Okhapkin +1
Using resonant two-step laser excitation of trapped 232Th+ ions, we observe 43 previously unknown energy levels within the energy range from 7.3 to 8.3 eV. The high density of stat…
Two-photon laser excitation of trapped 232Th+ ions via the 402 nm resonance line
O. A. Herrera-Sancho, M. V. Okhapkin, K. Zimmermann +5
Experiments on one- and two-photon laser excitation of 232Th+ ions in a radiofrequency ion trap are reported. As the first excitation step, the strongest resonance line at 402 nm f…
Laser ablation loading of a radiofrequency ion trap
K. Zimmermann, M. V. Okhapkin, O. A. Herrera-Sancho +1
The production of ions via laser ablation for the loading of radiofrequency (RF) ion traps is investigated using a nitrogen laser with a maximum pulse energy of 0.17 mJ and a peak…