Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Three-dimensional matter-wave interferometry of a trapped single ion   We report on a demonstration of Ramsey interferometry by three-dimensional
motion with a trapped $^{171}Yb^+$ ion. We applied a momentum kick to the ion
in a direction diagonal to the trap axes to initiate three-dimensional motion
using a mode-locked pulse laser. The interference signal was analyzed
theoretically to demonstrate three-dimensional matter-wave interference. This
work paves the way to realizing matter-wave interferometry using trapped ions.

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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
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The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph