Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient quantum state preparation using Stern-Gerlach effect on cold
  atoms   The Zeeman hyperfine state dependent force in a Stern-Gerlach (SG) experiment
has been exploited to separate and detect atoms having different Zeeman
hyperfine states in a cold atom cloud. Utilizing this SG technique, we have
made the quantitative estimate of atoms in different Zeeman hyperfine states in
an atom cloud, which has been helpful in optimizing the optical pumping of
atoms for efficient preparation of atomic state. Employing an optimized optical
pumping, nearly $92 \% $ of cold $^{87}Rb$ atoms from a grey magneto-optical
trap (G-MOT) on atom-chip have been optically pumped to the trappable Zeeman
hyperfine state $\ket{F=2, \, m_{F} = +2}$. These optically pumped atoms have
been trapped in an Ioffe-Pritchard magnetic trap near the atom-chip surface.

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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
16
The categories of this paper are: stat
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin