Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Logic Using Sympathetically Cooled Ions   One limit to the fidelity of quantum logic operations on trapped ions arises
from heating of the ions' collective modes of motion. Sympathetic cooling of
the ions during the logic operations may eliminate this source of errors. We
discuss benefits and drawbacks of this proposal, and describe possible
experimental implementations. We also present an overview of trapped-ion
dynamics in this scheme.

18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex