Multiplexed entanglement generation over quantum networks using multi-qubit nodes. (arXiv:1702.04885v1 [quant-ph])

Quantum networks distributed over distances greater than a few kilometers
will be limited by the time required for information to propagate between
nodes. We analyze protocols that are able to circumvent this bottleneck by
employing multi-qubit nodes and multiplexing. For each protocol, we investigate
the key network parameters that determine its performance. We model achievable
entangling rates based on the anticipated near-term performance of
nitrogen-vacancy centres and other promising network platforms. This analysis
allows us to compare the potential of the proposed multiplexed protocols in
different regimes. Moreover, by identifying the gains that may be achieved by
improving particular network parameters, our analysis suggests the most
promising avenues for research and development of prototype quantum networks.

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