Buffer gas cooling of ions in radio-frequency traps using ultracold atoms
Reaching ultracold temperatures within hybrid atom–ion systems is a major limiting factor for control and exploration of the atom–ion interaction in the quantum regime. In this work, we present results on numerical simulations of trapped ion buffer gas cooling using an ultracold atomic gas in a larg...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac5759 |
| _version_ | 1797748473850757120 |
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| author | E Trimby H Hirzler H Fürst A Safavi-Naini R Gerritsma R S Lous |
| author_facet | E Trimby H Hirzler H Fürst A Safavi-Naini R Gerritsma R S Lous |
| author_sort | E Trimby |
| collection | DOAJ |
| description | Reaching ultracold temperatures within hybrid atom–ion systems is a major limiting factor for control and exploration of the atom–ion interaction in the quantum regime. In this work, we present results on numerical simulations of trapped ion buffer gas cooling using an ultracold atomic gas in a large number of experimentally realistic scenarios. We explore the suppression of micromotion-induced heating effects through optimization of trap parameters for various radio-frequency (rf) traps and rf driving schemes including linear and octupole traps, digital Paul traps, rotating traps and hybrid optical/rf traps. We find that very similar ion energies can be reached in all of them even when considering experimental imperfections that cause so-called excess micromotion. Moreover we look into a quantum description of the system and show that quantum mechanics cannot save the ion from micromotion-induced heating in an atom–ion collision. The results suggest that buffer gas cooling can be used to reach close to the ion’s groundstate of motion and is even competitive when compared to some sub-Doppler cooling techniques such as Sisyphus cooling. Thus, buffer gas cooling is a viable alternative for ions that are not amenable to laser cooling, a result that may be of interest for studies into cold controlled quantum chemistry and charged impurity physics. |
| first_indexed | 2024-03-12T16:05:18Z |
| format | Article |
| id | doaj.art-24117d71818b40b296df561bd1498a3e |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:05:18Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-24117d71818b40b296df561bd1498a3e2023-08-09T14:21:41ZengIOP PublishingNew Journal of Physics1367-26302022-01-0124303500410.1088/1367-2630/ac5759Buffer gas cooling of ions in radio-frequency traps using ultracold atomsE Trimby0https://orcid.org/0000-0002-8119-7241H Hirzler1https://orcid.org/0000-0002-0306-5366H Fürst2https://orcid.org/0000-0002-6811-5248A Safavi-Naini3https://orcid.org/0000-0002-5083-5423R Gerritsma4https://orcid.org/0000-0002-3466-5719R S Lous5https://orcid.org/0000-0002-4363-5239Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam , 1098 XH Amsterdam, The NetherlandsVan der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam , 1098 XH Amsterdam, The NetherlandsPhysikalisch-Technische Bundesanstalt , Bundesallee 100, 38116 Braunschweig, Germany; Institut für Quantenoptik, Leibniz Universität Hannover , Welfengarten 1, 30167 Hannover, GermanyVan der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam , 1098 XH Amsterdam, The Netherlands; QuSoft , Science Park 123, 1098 XG Amsterdam, The Netherlands; Institute for Theoretical Physics, Institute of Physics, University of Amsterdam , 1098 XH Amsterdam, The NetherlandsVan der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam , 1098 XH Amsterdam, The Netherlands; QuSoft , Science Park 123, 1098 XG Amsterdam, The NetherlandsVan der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam , 1098 XH Amsterdam, The NetherlandsReaching ultracold temperatures within hybrid atom–ion systems is a major limiting factor for control and exploration of the atom–ion interaction in the quantum regime. In this work, we present results on numerical simulations of trapped ion buffer gas cooling using an ultracold atomic gas in a large number of experimentally realistic scenarios. We explore the suppression of micromotion-induced heating effects through optimization of trap parameters for various radio-frequency (rf) traps and rf driving schemes including linear and octupole traps, digital Paul traps, rotating traps and hybrid optical/rf traps. We find that very similar ion energies can be reached in all of them even when considering experimental imperfections that cause so-called excess micromotion. Moreover we look into a quantum description of the system and show that quantum mechanics cannot save the ion from micromotion-induced heating in an atom–ion collision. The results suggest that buffer gas cooling can be used to reach close to the ion’s groundstate of motion and is even competitive when compared to some sub-Doppler cooling techniques such as Sisyphus cooling. Thus, buffer gas cooling is a viable alternative for ions that are not amenable to laser cooling, a result that may be of interest for studies into cold controlled quantum chemistry and charged impurity physics.https://doi.org/10.1088/1367-2630/ac5759buffergas coolingtrapped ionsultracold atoms |
| spellingShingle | E Trimby H Hirzler H Fürst A Safavi-Naini R Gerritsma R S Lous Buffer gas cooling of ions in radio-frequency traps using ultracold atoms New Journal of Physics buffergas cooling trapped ions ultracold atoms |
| title | Buffer gas cooling of ions in radio-frequency traps using ultracold atoms |
| title_full | Buffer gas cooling of ions in radio-frequency traps using ultracold atoms |
| title_fullStr | Buffer gas cooling of ions in radio-frequency traps using ultracold atoms |
| title_full_unstemmed | Buffer gas cooling of ions in radio-frequency traps using ultracold atoms |
| title_short | Buffer gas cooling of ions in radio-frequency traps using ultracold atoms |
| title_sort | buffer gas cooling of ions in radio frequency traps using ultracold atoms |
| topic | buffergas cooling trapped ions ultracold atoms |
| url | https://doi.org/10.1088/1367-2630/ac5759 |
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