Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rydberg excitation of cold atoms inside a hollow core fiber   We report on a versatile, highly controllable hybrid cold Rydberg atom fiber
interface, based on laser cooled atoms transported into a hollow core
Kagom\'{e} crystal fiber. Our experiments are the first to demonstrate the
feasibility of exciting cold Rydberg atoms inside a hollow core fiber and we
study the influence of the fiber on Rydberg electromagnetically induced
transparency (EIT) signals. Using a temporally resolved detection method to
distinguish between excitation and loss, we observe two different regimes of
the Rydberg excitations: one EIT regime and one regime dominated by atom loss.
These results are a substantial advancement towards future use of our system
for quantum simulation or information.

34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ