Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: RF-dressed Rydberg atoms in hollow-core fibres   The giant electro-optical response of Rydberg atoms manifests itself in the
emergence of sidebands in the Rydberg excitation spectrum if the atom is
exposed to a radio-frequency (RF) electric field. Here we report on the study
of RF-dressed Rydberg atoms inside hollow-core photonic crystal fibres
(HC-PCF), a system that enables the use of low modulation voltages and offers
the prospect of miniaturised vapour-based electro-optical devices. Narrow
spectroscopic features caused by the RF field are observed for modulation
frequencies up to 500 MHz.

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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg