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DOE OSTI · 21450813

Compact toroidal ion-trap design and optimization

Madsen, M J·Gorman, C H
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Abstract

We present the design of a type of compact toroidal, or 'halo', ion trap. Such traps may be useful for mass spectrometry, studying small Coulomb cluster rings, quantum-information applications, or other quantum simulations where a ring topology is of interest. We present results from a Monte Carlo optimization of the trap design parameters using finite-element analysis simulations that minimize higher-order anharmonic terms in the trapping pseudopotential, while maintaining complete control over ion placement at the pseudopotential node in three dimensions using static bias fields. These simulations are based on a practical electrode design using readily available parts, yet can be easily scaled to any size trap with similar electrode spacings. We also derive the conditions for a crystal structure transition for two ions in the compact halo trap, the first nontrivial transition for Coulomb crystals in this geometry.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS74 ATOMIC AND MOLECULAR PHYSICSCALCULATION METHODSCHARGED PARTICLESCOMPUTERIZED SIMULATIONCONTROLCRYSTAL STRUCTURECRYSTALSDESIGNELECTRODESENERGY-LEVEL TRANSITIONSFINITE ELEMENT METHODINFORMATIONIONSMATHEMATICAL SOLUTIONSMONTE CARLO METHODNUMERICAL SOLUTIONOPTIMIZATIONPOTENTIALSQUANTUM INFORMATIONSIMULATIONTRAPPINGTRAPS

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Madsen, M J, Gorman, C H. 2010-10-15. Compact toroidal ion-trap design and optimization. https://doi.org/10.1103/physreva.82.043423

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