Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Active polarization control for quantum communication in long-distance
  optical fibers with shared telecom traffic   We experimentally demonstrate the compatibility of wavelength multiplexed
active polarization stabilization for quantum communication in an optical fiber
carrying telecom traffic. One of the feedback control channels contains a 9.953
Gb/s data stream generated from a BER meter. We verify the ability to transmit
single-photons in the two opposite directions of a 23 km optical fiber spool,
while maintaining their state of polarization stable and a classical BER in the
feedback channel error-free, during 6 hours of continuous operation.

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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int
18
The categories of this paper are: econ