Observation of Chemical Reactions between a Trapped Ion and Ultracold Feshbach Dimers

Hirzler, H.; Lous, Rianne S.; Trimby, E.; Pérez‐Ríos, Jesús; Safavi-Naini, Arghavan; Gerritsma, R.

doi:10.1103/physrevlett.128.103401

Cited by 25 publications

(14 citation statements)

References 50 publications

(68 reference statements)

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“…and C 6 = 29284 a.u. The same potential has been used previously in quasi-classical trajectory calculations showing that the short-range part of the atom-ion interactions has a negligible impact on scattering observables in the cold regime [27,28]. Whereas, for 174 Yb + -Rb the potential is taken as…”

Section: Discussionmentioning

confidence: 99%

The dynamics of a single trapped ion in a high density media: a stochastic approach

Mateo¹,

Ríos²,

Madroñero³

2022

Preprint

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Based on the Langevin equation, a stochastic formulation is implemented to describe the dynamics of a trapped ion in a bath of ultracold atoms, including an excess of micromotion. The ion dynamics is described following a hybrid analytical-numerical approach in which the ion is treated as a classical impurity in a thermal bath. As a result, the ion energy's time evolution and distribution are derived from studying the sympathetic cooling process. Furthermore, the ion dynamics under different stochastic noise terms is also considered to gain information on the bath properties' role in the system's energy transfer processes. Finally, the results obtained from this formulation are contrasted with those obtained with a more traditional Monte Carlo approach.

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Section: Discussionmentioning

confidence: 99%

The dynamics of a single trapped ion in a high density media: a stochastic approach

Mateo¹,

Ríos²,

Madroñero³

2022

Preprint

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“…By immersing a trapped ion in a cold atomic bath, one creates a system that benefits both from the spatial localization and addressability of the ion, as well as from the scalability and ultracold temperatures of the atom cloud [1][2][3]. The result is a unique combination of two well-controllable platforms linked together by the intermediate range ion-atom interaction, with applications in impurity physics [4][5][6][7][8][9][10][11], cold chemistry [12][13][14][15][16][17] and quantum technology [18,19]. Buffer gas cooling has long been used to obtain cold samples of molecular ions [20][21][22][23] and singly trapped atomic ions [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Buffer gas cooling of ions in radio-frequency traps using ultracold atoms

et al. 2022

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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.

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“…However, singling out these two very recent results does not do full justice to the rapid developments in the whole field. Other important examples of breakthroughs include the observation of signatures of s-wave spin dynamics far above the s-wave energy Côté and Simbotin, 2018;, rapid improvements in buffer gas cooling (Haze et al, 2018;Schmidt et al, 2020b;Hirzler et al, 2020a;Dieterle et al, 2021;Trimby et al, 2022), observations of interactions between Rydberg atoms and ions (Engel et al, 2018;Ewald et al, 2019;Haze et al, 2019;Deiß et al, 2021;Zuber et al, 2021), the accurate experimental breakdown of cold chemistry reactions paths in ion-atom mixtures (da Silva Jr et al, 2017;Ben-shlomi et al, 2020;Mohammadi et al, 2021;Ben-shlomi et al, 2021), quantum logic spectroscopy of ion-atom chemistry (Katz et al, 2022) and recently the observation of interactions between atomic Feshbach dimers and trapped ions (Hirzler et al, 2020b(Hirzler et al, , 2022, just to mention a few.…”

Section: Introductionmentioning

confidence: 99%

Ultracold ion-atom experiments: cooling, chemistry, and quantum effects

Lous,

Gerritsma

2022

Preprint

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Experimental setups that study laser-cooled ions immersed in baths of ultracold atoms merge the two exciting and well-established fields of quantum gases and trapped ions. These experiments benefit both from the exquisite read-out and control of the few-body ion systems as well as the many-body aspects, tunable interactions, and ultracold temperatures of the atoms. However, combining the two leads to challenges both in the experimental design and the physics that can be studied. Nevertheless, these systems have provided insights into ion-atom collisions, buffer gas cooling of ions and quantum effects in the ion-atom interaction. This makes them promising candidates for ultracold quantum chemistry studies, creation of cold molecular ions for spectroscopy and precision measurements, and as test beds for quantum simulation of charged impurity physics. In this review we aim to provide an experimental account of recent progress and introduce the experimental setup and techniques that enabled the observation of quantum effects.

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Observation of Chemical Reactions between a Trapped Ion and Ultracold Feshbach Dimers

Abstract: Yb þ ion by isotope-selective two-photon ionization, Doppler-cool it to about 0.5 mK and prepare it in the

Cited by 25 publications

References 50 publications

The dynamics of a single trapped ion in a high density media: a stochastic approach

The dynamics of a single trapped ion in a high density media: a stochastic approach

Buffer gas cooling of ions in radio-frequency traps using ultracold atoms

Ultracold ion-atom experiments: cooling, chemistry, and quantum effects

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