Stabilizing quantum simulations of lattice gauge theories by dissipation

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Tobias Schmale
  • Hendrik Weimer

Organisationseinheiten

Externe Organisationen

  • Technische Universität Berlin
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Details

OriginalspracheEnglisch
Aufsatznummer033306
Seitenumfang8
FachzeitschriftPhysical Review Research
Jahrgang6
Ausgabenummer3
PublikationsstatusVeröffentlicht - 16 Sept. 2024

Abstract

Simulations of lattice gauge theories on noisy quantum hardware inherently suffer from violations of the gauge symmetry due to coherent and incoherent errors of the underlying physical system that implements the simulation. These gauge violations cause the simulations to become unphysical requiring the result of the simulation to be discarded. We investigate an active correction scheme that relies on detecting gauge violations locally and subsequently correcting them by dissipatively driving the system back into the physical gauge sector. We show that the correction scheme not only ensures the protection of the gauge symmetry, but it also leads to a longer validity of the simulation results even within the gauge-invariant sector. Finally, we discuss further applications of the scheme such as preparation of the many-body ground state of the simulated system.

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Stabilizing quantum simulations of lattice gauge theories by dissipation. / Schmale, Tobias; Weimer, Hendrik.
in: Physical Review Research, Jahrgang 6, Nr. 3, 033306, 16.09.2024.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Schmale T, Weimer H. Stabilizing quantum simulations of lattice gauge theories by dissipation. Physical Review Research. 2024 Sep 16;6(3):033306. doi: 10.48550/arXiv.2404.16454, 10.1103/PhysRevResearch.6.033306
Schmale, Tobias ; Weimer, Hendrik. / Stabilizing quantum simulations of lattice gauge theories by dissipation. in: Physical Review Research. 2024 ; Jahrgang 6, Nr. 3.
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