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Controlled teleportation of qubit states: Relation between teleportation faithfulness, controller's authority, and tripartite entanglement

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73594824" target="_blank" >RIV/61989592:15310/19:73594824 - isvavai.cz</a>

  • Result on the web

    <a href="https://journals.aps.org/pra/pdf/10.1103/PhysRevA.99.012306" target="_blank" >https://journals.aps.org/pra/pdf/10.1103/PhysRevA.99.012306</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevA.99.012306" target="_blank" >10.1103/PhysRevA.99.012306</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Controlled teleportation of qubit states: Relation between teleportation faithfulness, controller's authority, and tripartite entanglement

  • Original language description

    We consider the controlled quantum teleportation performed on a single copy of entangled three-qubit pure states and show how the fidelity of teleportation and the control power are related to the tripartite entanglement measures, namely, three-tangle and genuine concurrence. We characterize the states with extreme properties, and use them to derive tight lower and upper bounds on both the teleportation fidelity and control power for a given amount of entanglement. Furthermore, we discuss the usefulness of these two quantities for experimental detection and/or quantification of tripartite entanglement. In particular, we present the results which imply that the control power cannot be considered as a candidate for a degree of three-qubit entanglement complementary to the three-tangle as conjectured recently [K. Jeong, J. Kim, and S. Lee, Phys. Rev. A 93 , 032328 (2016)]. Furthermore, we prove a mutual relation between teleportation fidelity and control power which provides attainable limits of the controller&apos;s authority for existing controlled teleportation schemes. Although those relations are derived for pure states, their extensions for mixed states are also examined.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10306 - Optics (including laser optics and quantum optics)

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Physical Review A

  • ISSN

    2469-9926

  • e-ISSN

  • Volume of the periodical

    99

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    9

  • Pages from-to

    "012306-1"-"012306-9"

  • UT code for WoS article

    000455050600002

  • EID of the result in the Scopus database

    2-s2.0-85059810248