Design and analysis of communication protocols for quantum repeater networks

Cody Jones, Danny Kim, Matthew T. Rakher, Paul G. Kwiat, Thaddeus D. Ladd

Research output: Contribution to journalArticlepeer-review

Abstract

We analyze how the performance of a quantum-repeater network depends on the protocol employed to distribute entanglement, and we find that the choice of repeater-to-repeater link protocol has a profound impact on entanglement-distribution rate as a function of hardware parameters. We develop numerical simulations of quantum networks using different protocols, where the repeater hardware is modeled in terms of key performance parameters, such as photon generation rate and collection efficiency. These parameters are motivated by recent experimental demonstrations in quantum dots, trapped ions, and nitrogen-vacancy centers in diamond. We find that a quantum-dot repeater with the newest protocol ('MidpointSource') delivers the highest entanglement-distribution rate for typical cases where there is low probability of establishing entanglement per transmission, and in some cases the rate is orders of magnitude higher than other schemes. Our simulation tools can be used to evaluate communication protocols as part of designing a large-scale quantum network.

Original languageEnglish (US)
Article number083015
JournalNew Journal of Physics
Volume18
Issue number8
DOIs
StatePublished - Aug 2016

Keywords

  • Quantum communication
  • Quantum key distribution
  • Quantum repeater

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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