Converting multilevel nonclassicality into genuine multipartite entanglement

Regula, Bartosz and Piani, Marco and Cianciaruso, Marco and Bromley, Thomas R. and Streltsov, Alexander and Adesso, Gerardo (2018) Converting multilevel nonclassicality into genuine multipartite entanglement. New Journal of Physics. pp. 1-10. ISSN 1367-2630 (https://doi.org/10.1088/1367-2630/aaae9d)

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Abstract

Characterizing genuine quantum resources and determining operational rules for their manipulation are crucial steps to appraise possibilities and limitations of quantum technologies. Two such key resources are nonclassicality, manifested as quantum superposition between reference states of a single system, and entanglement, capturing quantum correlations among two or more subsystems. Here we present a general formalism for the conversion of nonclassicality into multipartite entanglement, showing that a faithful reversible transformation between the two resources is always possible within a precise resource-theoretic framework. Specializing to quantum coherence between the levels of a quantum system as an instance of nonclassicality, we introduce explicit protocols for such a mapping. We further show that the conversion relates multilevel coherence and multipartite entanglement not only qualitatively, but also quantitatively, restricting the amount of entanglement achievable in the process and in particular yielding an equality between the two resources when quantified by fidelity-based geometric measures.

ORCID iDs

Piani, Marco ORCID: https://orcid.org/0000-0002-4698-9497

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• Item metadata

  Item type:	Article
  ID code:	63315
  Dates:	Date Event 12 February 2018 Published 12 February 2018 Published Online 12 February 2018 Accepted
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	15 Feb 2018 11:45
  Last modified:	12 Dec 2024 05:23
  Related URLs:	Journal or Publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/63315