Details
| Original language | English |
|---|---|
| Article number | 035004 |
| Number of pages | 19 |
| Journal | New journal of physics |
| Volume | 24 |
| Issue number | 3 |
| Publication status | Published - 1 Mar 2022 |
Abstract
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.
Keywords
- buffergas cooling, trapped ions, ultracold atoms
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: New journal of physics, Vol. 24, No. 3, 035004, 01.03.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Buffer gas cooling of ions in radio-frequency traps using ultracold atoms
AU - Trimby, E.
AU - Hirzler, H.
AU - Fürst, H.
AU - Safavi-Naini, A.
AU - Gerritsma, R.
AU - Lous, R. S.
N1 - Funding Information: This work was supported by the Netherlands Organization for Scientific Research (Vidi Grant 680-47-538 and Start-up Grant 740.018.008, and Vrije Programma 680.92.18.05 (RG)). RSL acknowledges funding from the European Unions Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 895473. ASN is supported by the Dutch Research Council (NWO/OCW), as part of the Quantum Software Consortium programme (Project Number 024.003.037).
PY - 2022/3/1
Y1 - 2022/3/1
N2 - 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.
AB - 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.
KW - buffergas cooling
KW - trapped ions
KW - ultracold atoms
UR - http://www.scopus.com/inward/record.url?scp=85128393225&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2109.15195
DO - 10.48550/arXiv.2109.15195
M3 - Article
AN - SCOPUS:85128393225
VL - 24
JO - New journal of physics
JF - New journal of physics
SN - 1367-2630
IS - 3
M1 - 035004
ER -