Activating remote entanglement in a quantum network by local counting of identical particles
arXiv:1812.02141 · doi:10.1103/PhysRevA.99.062322
Abstract
Quantum information and communication processing within quantum networks usually employs identical particles. Despite this, the physical role of quantum statistical nature of particles in large-scale networks remains elusive. Here, we show that just the indistinguishability of fermions makes it possible a new mechanism of entanglement transfer in many-node quantum networks. This process activates remote entanglement among distant sites, which do not share a common past, by only locally counting identical particles and classical communication. These results constitute the key achievement of the present technique and open the way to a more stable multistage transfer of nonlocal quantum correlations based on fermions.
arXiv comment8 pages, 4 figures. Updated manuscript, close to the published version
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