Entanglement in highly symmetric multipartite quantum states

Adam Burchardt, Jakub Czartowski, and Karol Życzkowski
Phys. Rev. A 104, 022426 – Published 23 August 2021

Abstract

A construction of genuinely entangled multipartite quantum states based on the group theory is presented. Analyzed states resemble the Dicke states, whereas the interactions occur only between specific subsystems related by the action of the selected group. The states constructed by this technique exhibit desired symmetry properties and form a natural resource for less-symmetric quantum informational tasks. We propose quantum circuits efficiently generating such states, which in general have smaller complexity than the circuits necessary to create fully symmetric entangled states. Exemplary five-qubit quantum states are simulated on quantum computers.

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  • Received 6 June 2021
  • Accepted 6 August 2021

DOI:https://doi.org/10.1103/PhysRevA.104.022426

©2021 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Adam Burchardt1,*, Jakub Czartowski1, and Karol Życzkowski1,2

  • 1Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
  • 2Center for Theoretical Physics, Polish Academy of Sciences, 02-668 Warsaw, Poland

  • *Corresponding author: adam.burchardt@amu.edu.pl

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Vol. 104, Iss. 2 — August 2021

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