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.

  • 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:17 Apr 2024 00:27
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/63315
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