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Relaxation to equilibrium in controlled-NOT quantum networks

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F21%3A00353866" target="_blank" >RIV/68407700:21340/21:00353866 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1103/PhysRevA.103.042218" target="_blank" >https://doi.org/10.1103/PhysRevA.103.042218</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevA.103.042218" target="_blank" >10.1103/PhysRevA.103.042218</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Relaxation to equilibrium in controlled-NOT quantum networks

  • Original language description

    The approach to equilibrium of quantum mechanical systems is a topic as old as quantum mechanics itself, but has recently seen a surge of interest due to applications in quantum technologies, including, but not limited to, quantum computation and sensing. The mechanisms by which a quantum system approaches its long-time, limiting stationary state are fascinating and, sometimes, quite different from their classical counterparts. In this respect, quantum networks represent mesoscopic quantum systems of interest. In such a case, the graph encodes the elementary quantum systems (say qubits) at its vertices, while the links define the interactions between them. We study here the relaxation to equilibrium for a fully connected quantum network with controlled-NOT (CNOT) gates representing the interaction between the constituting qubits. We give a number of results for the equilibration in these systems, including analytic estimates. The results are checked using numerical methods for systems with up to 15-16 qubits. It is emphasized in which way the size of the network controls the convergency.

  • 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

    10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

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

    2021

  • 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

    2469-9934

  • Volume of the periodical

    2021

  • Issue of the periodical within the volume

    103

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    9

  • Pages from-to

    "042218-1"-"042218-9"

  • UT code for WoS article

    000646162100001

  • EID of the result in the Scopus database

    2-s2.0-85105035629