Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Control of dynamical localization by an additional quantum degree of
  freedom   We identify a new parameter that controls the localization length in a driven
quantum system. This parameter results from an additional quantum degree of
freedom. The center-of-mass motion of a two-level ion stored in a Paul trap and
interacting with a standing wave laser field exhibits this phenomenon. We also
discuss the influence of spontaneous emission.

30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom