Micromotion-Induced Limit to Atom-Ion Sympathetic Cooling in Paul Traps
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Cetina-2012-Micromotion-Induced Limit to Atom-Ion Sympathetic.pdf
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Author(s)
Grier, Andrew Todd
Vuletic, Vladan
Cetina, Marko, Ph. D. Massachusetts Institute of Technology
Date Issued
December 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Cetina, Marko, Andrew T. Grier, and Vladan Vuletić. “Micromotion-Induced Limit to Atom-Ion Sympathetic Cooling in Paul Traps.” Physical Review Letters 109.25 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We present, and derive analytic expressions for, a fundamental limit to the sympathetic cooling of ions in radio-frequency traps using cold atoms. The limit arises from the work done by the trap electric field during a long-range ion-atom collision and applies even to cooling by a zero-temperature atomic gas in a perfectly compensated trap. We conclude that in current experimental implementations, this collisional heating prevents access to the regimes of single-partial-wave atom-ion interaction or quantized ion motion. We determine conditions on the atom-ion mass ratio and on the trap parameters for reaching the s-wave collision regime and the trap ground state.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.253201
