New Journal of Physics (Jan 2014)

Spatial reference frame agreement in quantum networks

  • Tanvirul Islam,
  • Loïck Magnin,
  • Brandon Sorg,
  • Stephanie Wehner

DOI
https://doi.org/10.1088/1367-2630/16/6/063040
Journal volume & issue
Vol. 16, no. 6
p. 063040

Abstract

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In order to communicate information in a quantum network effectively, all network nodes should share a common reference frame. Here, we propose to study how well m nodes in a quantum network can establish a common spatial reference frame from scratch, even though t of them may be arbitrarily faulty. We present a protocol that allows all correctly functioning nodes to agree on a common reference frame as long as they are fully connected and not more than $t<m/3$ nodes are faulty. Our protocol furthermore has the appealing property that it allows any existing two-node protocol for reference frame agreement to be lifted to a protocol for a quantum network.

Keywords