Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-photon orbital angular momentum qudit states in fiber - Limits to
  Dephasing correction via dynamical decoupling   We analytically derive a decoherence model for orbital angular momentum
states of a photon in a multimode optical fiber and show that rate of
decoherence scales exponentially with $l^2$, where $l$ is the azimuthal mode
order.~We also show numerically that for large values of $l$ the orbital
angular momentum photon state completely dephases.~However for lower values of
$l$ the decoherence can be minimized by using dynamical decoupling to allow for
qudit high-bandwidth quantum communication and similar applications.
\end{abstract}

6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th