Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fabrication method for micro vapor cells for alkali atoms   A quantum network which consists of several components should ideally work on
a single physical platform. Neutral alkali atoms have the potential to be very
well suited for this purpose due to their electronic structure which involves
long lived nuclear spins and very sensitive highly excited Rydberg states. In
this paper we describe a fabrication method based on quartz glass to structure
arbitrary shapes of microscopic vapor cells. We show that the usual
spectroscopic properties known from macroscopic vapor cells are almost
unaffected by the strong confinement.

2
The categories of this paper are: math
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph