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arXiv · 1812.02141

Activating remote entanglement in a quantum network by local counting of identical particles

Alessia Castellini·Bruno Bellomo·Giuseppe Compagno·Rosario Lo Franco
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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.

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Alessia Castellini, Bruno Bellomo, Giuseppe Compagno, Rosario Lo Franco. 2018-12-05. Activating remote entanglement in a quantum network by local counting of identical particles. https://doi.org/10.1103/physreva.99.062322

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