Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-Resolution Imaging of Cold Atoms through a Multimode Fiber   We developed an ultra-compact high-resolution imaging system for cold atoms.
Its only in-vacuum element is a multimode optical fiber with a diameter of
$230\,\mu$m, which simultaneously collects light and guides it out of the
vacuum chamber. External adaptive optics allow us to image cold Rb atoms with a
$\sim 1\,\mu$m resolution over a $100 \times 100\,\mu$m$^2$ field of view.
These optics can be easily rearranged to switch between fast absorption imaging
and high-sensitivity fluorescence imaging. This system is particularly suited
for hybrid quantum engineering platforms where cold atoms are combined with
optical cavities, superconducting circuits or optomechanical devices
restricting the optical access.

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The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
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The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex