Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum superadditivity in linear optics networks: sending bits via
  multiple access Gaussian channels   We study classical capacity regions of quantum Gaussian multiple access
channels (MAC). In classical variants of such channels, whilst some capacity
superadditivity-type effects such as the so called {\it water filling effect}
may be achieved, a fundamental classical additivity law can still be
identified, {\it viz.} adding resources to one sender is never advantageous to
other senders in sending their respective information to the receiver. Here, we
show that quantum resources allows violation of this law, by providing two
illustrative schemes of experimentally feasible Gaussian MACs.

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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: physics
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The categories of this paper are: econ
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int