Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Quantum Router Architecture for High-Fidelity Entanglement Flows in
  Quantum Networks   The past decade has seen tremendous progress in experimentally realizing the
building blocks of quantum repeaters. Repeater architectures with multiplexed
quantum memories have been proposed to increase entanglement distribution
rates, but an open challenge is to maintain entanglement fidelity over
long-distance links. Here, we address this with a quantum router architecture
comprising many quantum memories connected in a photonic switchboard to broker
entanglement flows across quantum networks. We compute the rate and fidelity of
entanglement distribution under this architecture using an event-based
simulator, finding that the router improves the entanglement fidelity as
multiplexing depth increases without a significant drop in the entanglement
distribution rate. Specifically, the router permits channel-loss-invariant
fidelity, i.e. the same fidelity achievable with lossless links. Furthermore,
this scheme automatically prioritizes entanglement flows across the full
network without requiring global network information. The proposed architecture
uses present-day photonic technology, opening a path to near-term deployable
multi-node quantum networks.

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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: stat