Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Creation of atomic coherent superpositions in manifolds of levels
  without multi-photon resonance   We propose a scheme for creating atomic coherent superpositions via
stimulated Raman adiabatic passage in a Lambda-type system where the final
state has twofold levels. In the employ of a control field, the presence of
double dark states leads to two arbitrary coherent superposition states with
equal amplitude but inverse relative phase without the condition of
multi-photon resonance. In particular, two orthogonal maximal coherent
superposition states are created when the control field is resonant with the
transition of the twofold levels. This scheme can also be extended to manifold
Lambda-type systems.

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The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: cs
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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph