Hybrid Atom Ion Trap

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Latest news and research results

A detailed description of our atom trap and imaging system has been published in Applied Physics B17.01.2017
Bastian

In order to precisely measure the density distribution in our dark sponataneous froce optical trap (DarkSPOT), we developed a novel imaging system which is based on saturation absorption imaging. The details of this setup and the characterization of our atom cloud were published as part of the topical collection “Enlightening the World with the Laser” - honoring T. W. Hänsch.

Reference:
B. Höltkemeier et al., A dense gas of laser-cooled atoms for hybrid atom–ion trapping, Applied Physics B 123.1, or see our full list of publications
The dynamics of an ion in a radio-frequency trap has been investigated07.12.2016
Bastian

This paper is a follow-up on our recent publication in PRL (see news from 10.06.2016) investigating sympathetic cooling of a trapped ion using a neutral buffer gas. We provide a detailed analysis of the ions energy distribution and it dependence on different parameters such as the rf-frequency and voltage of the trap as well as the mass and spatial distribution of the neutral buffer gas. We also provide an estimate for the optimal atom-to-ion mass ratio in order to achive the maximum cooling rate.

Reference:
B. Höltkemeier et al., Dynamics of a single trapped ion immersed in a buffer gas, Phys. Rev. A 94, 062703 , or see our full list of publications
Bastian Höltkemeier finishes his PhD!27.10.2016
Bastian

Bastian Höltkemeier from the HAITRAP team successfully defended his thesis... Congratulations!

After the defense there was a little celebration in the CQD lounge where Bastian received his PhD hat (see picture). Part of the hat is an actual ion trap which Bastian can use to also trap ions at home! Definitely monkey approved!

Reference:
B. Höltkemeier, Sympathetic cooling of ions in a hybrid atom ion trap, University Library Heidelberg, or see our full list of publications

Publications by the HAITrap project

2017B. Höltkemeier, J. Glässel, H. Lopez, M. Weidemüller, A dense gas of laser-cooled atoms for hybrid atom-ion trapping, Applied Physics B123, 51 (2017)

2016 B. Höltkemeier, P. Weckesser, H. Lopez, M. Weidemüller, Buffer-Gas Cooling of a Single Ion in a Multipole Radio Frequency Trap Beyond the Critical Mass Ratio, Phys. Rev. Lett. 116, 233003 (2016)

B. Höltkemeier, P. Weckesser, H. Lopez, M. Weidemüller, Dynamics of a single trapped ion immersed in a buffer gas, Phys. Rev. A 94, 062703 (2016)

2015 H. Lopez, B. Höltkemeier, J. Glässel, P. Weckesser, M. Weidemüller, T. Best, E. Endres, R. Wester, Sympathetic cooling of OH- ions using ultracold Rb atoms in a dark SPOT, Proceedings of the International School of Physics Enrico Fermi 189 (2015)