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  • Letter
  • Open Access

Instant extraction of nonperturbative tripartite entanglement

Diana Méndez Avalos1,*, Kensuke Gallock-Yoshimura2,†, Laura J. Henderson2,3,‡, and Robert B. Mann2,4,§

  • 1Centro de Nanociencias y Nanotecnología Univiersidad Nacional Autónoma de México (CNyN-UNAM) Km 107 Carretera Tijuana-Ensenada, C.P. 22800, Ensenada, Baja California Mexico
  • 2Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
  • 3Centre for Engineered Quantum Systems, School of Mathematics and Physics, The University of Queensland, St. Lucia, Queensland 4072, Australia
  • 4Institute for Quantum Computing, University of Waterloo, Ontario, Canada N2L 3G1

  • *g7_menav18@ens.cnyn.unam.mx
  • †kgallock@uwaterloo.ca
  • ‡laura.henderson@uq.edu.au
  • §rbmann@uwaterloo.ca
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Phys. Rev. Research 5, L042039 – Published 15 December, 2023

DOI: https://doi.org/10.1103/PhysRevResearch.5.L042039

Abstract

We consider the problem of extracting tripartite entanglement through single local instantaneous interactions of a separable target system A−B−C with a scalar field. We find, nonperturbatively, that tripartite entanglement is easily extracted in this scenario, in strong contrast to bipartite extraction, which is not possible due to a no-go theorem. Contrary to previous expectations, the tripartite entanglement is of the Greenberger-Horne-Zeilinger-type and can be maximized by an optimal value of the coupling.

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Phys. Rev. Research 5, L042039– Published 15 December, 2023
  • Received 15 April 2022
  • Accepted 14 December 2022
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