Minimization of ion micromotion in a Paul trap
Abstract
Micromotion of ions in Paul traps has several adverse effects, including alterations of atomic transition line shapes, significant second-order Doppler shifts in high-accuracy studies, and limited confinement time in the absence of cooling. The ac electric field that causes the micromotion may also induce significant Stark shifts in atomic transitions. We describe three methods of detecting micromotion. The first relies on the change of the average ion position as the trap potentials are changed. The second monitors the amplitude of the sidebands of a narrow atomic transition, caused by the first-order Doppler shift due to the micromotion. The last technique detects the Doppler shift induced modulation of the fluorescence rate of a broad atomic transition. We discuss the detection sensitivity of each method to Doppler and Stark shifts, and show experimental results using the last technique.
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The rf drive has undesirable features that make micro-trap arrays difficult to operate, including substantial power dissipation due to currents flowing in the electrodes and the need to co-align the rf and static potentials to minimize micromotion, which affects gate operations.
“This adds to several other undesirable features of the rf drive that make micro-trap arrays difficult to operate6, including substantial power dissipation due to the currents flowing in the electrodes, and the need to co-align the rf and static potentials of the trap to minimize micromotion, which affects gate operations22,23.”
From Penning micro-trap for quantum computing (2024) · cites this paper as [22]
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References 21 · Cited by 720
- Authors
- Berkeland, D. J., Miller, J. D., Bergquist, J. C., Itano, W. M., & Wineland, D. J.
- Affiliations
- National Institute of Standards and Technology (US)
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1998-05-15
- Volume
- 83
- Issue
- 10
- Pages
- 5025-5033
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W2037347712
- Cited by
- 720
- References
- 21
- Citations by year
- 2026: 21 · 2025: 34 · 2024: 35 · 2023: 32 · 2022: 36 · 2021: 40 · 2020: 42 · 2019: 48 · 2018: 34 · 2017: 41 · 2016: 33 · 2015: 42 · 2014: 26 · 2013: 39 · 2012: 33
- FWCI
- 4.16
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Physics (publishedVersion)
- Funders
- Office of Naval Research
- Army Research Office
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Frequency and Time Standards
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Atomic and Molecular Physics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
- Keywords
- Paul trap, ion trap, Doppler shift, Stark shift, sideband modulation, fluorescence modulation, ion confinement
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