Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parameter regimes for surpassing the PLOB bound with error-corrected
  qudit repeaters   A potential quantum internet would open up the possibility of realizing
numerous new applications, including provably secure communication. Since
losses of photons limit long-distance, direct quantum communication and
widespread quantum networks, quantum repeaters are needed. The so-called
PLOB-repeaterless bound [Pirandola et al., Nat. Commun. 8, 15043 (2017)] is a
fundamental limit on the quantum capacity of direct quantum communication.
Here, we analytically derive the quantum-repeater gain for error-corrected,
one-way quantum repeaters based on higher-dimensional qudits for two different
physical encodings: Fock and multimode qudits. We identify parameter regimes in
which such quantum repeaters can surpass the PLOB-repeaterless bound and
systematically analyze how typical parameters manifest themselves in the
quantum-repeater gain. This benchmarking provides a guideline for the
implementation of error-corrected qudit repeaters.

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga