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

Alessia Castellini, Bruno Bellomo, Giuseppe Compagno, and Rosario Lo Franco
Phys. Rev. A 99, 062322 – Published 18 June 2019

Abstract

Quantum information and communication processing within quantum networks usually employ identical particles. Despite this, the physical role of the quantum statistical nature of particles in large-scale networks remains elusive. Here, we show that just the indistinguishability of fermions allows 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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  • Received 6 December 2018

DOI:https://doi.org/10.1103/PhysRevA.99.062322

©2019 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Alessia Castellini1, Bruno Bellomo2, Giuseppe Compagno1, and Rosario Lo Franco1,3,*

  • 1Dipartimento di Fisica e Chimica-Emilio Segrè, Università di Palermo, via Archirafi 36, 90123 Palermo, Italy
  • 2Institut UTINAM-UMR 6213, CNRS, Université Bourgogne Franche-Comté, Observatoire des Sciences de l'Univers THETA, 41 bis avenue de l'Observatoire, F-25010 Besançon, France
  • 3Dipartimento di Ingegneria, Università di Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, Italy

  • *rosario.lofranco@unipa.it

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Issue

Vol. 99, Iss. 6 — June 2019

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