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  1. Feb 9, 2024The Schwinger model describes quantum electrodynamics in 1+1-dimensions, it is a prototype for quantum chromodynamics, and its lattice version allows for a quantum link model description that can be simulated using modern quantum devices. In this work, we devise quantum simulations to investigate the dynamics of this model in its low dimensional form, where the gauge field degrees of freedom ...
  2. journals.aps.org

    In this work, we devise quantum simulations to investigate the dynamics of this model in its low dimensional form, where the gauge field degrees of freedom are described by spin 1/2 operators. We apply trotterization to write quantum circuits that effectively generate the evolution under the Schwinger model Hamiltonian.
  3. Observing quantum many-body scars in random quantum circuits. ... (FI-2023-1-0013); EU Quantum Flagship (PASQuanS2.1, 101113690); EU Horizon 2020 FET-OPEN OPTOlogic (Grant No 899794); EU Horizon Europe Program (Grant Agreement 101080086 — NeQST), ICFO Internal "QuantumGaudi" project; European Union's Horizon 2020 program under the Marie ...
  4. Observing quantum many-body scars in random quantum circuits BárbaraAndrade,1 UtsoBhattacharya,1,2 RavindraW.Chhajlany,3 TobiasGraß,4,5,1 andMaciejLewenstein1,6 1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain 2Institute for Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland
  5. link.aps.org

    7 days agoK. Tamura and H. Katsura, Quantum many-body scars of spinless fermions with density-assisted hopping in higher dimensions, Phys. Rev. B 106, 144306 (2022). L. Gotta, L. Mazza, P. Simon, and G. Roux, Exact many-body scars based on pairs or multimers in a chain of spinless fermions, Phys. Rev. B 106, 235147 (2022).
  6. link.aps.org

    Oct 2, 2023We introduce and study several classes of quantum spin models with multibody interactions that exhibit quantum many-body scars. The models are constructed by two different methods: one exploiting boundary states in integrable spin chains and the other based on a variant of existing methods such as restricted spectrum generating algebras. The first method allows us to construct deformations of ...
  7. link.aps.org

    Jan 3, 2024Dual-unitary circuits are a class of quantum systems for which exact calculations of various quantities are possible, even for circuits that are nonintegrable. The array of known exact results paints a compelling picture of dual-unitary circuits as rapidly thermalizing systems. However, in this Letter, we present a method to construct dual-unitary circuits for which some simple initial states ...
  8. journals.aps.org

    Apr 12, 2024Quantum many-body scars are nonthermal excited eigenstates of nonintegrable Hamiltonians, which could support coherent revival dynamics from special initial states when scars form an equally spaced tower in the energy spectrum. For open quantum systems, engineering many-body scarred dynamics by a controlled coupling to the environment remains largely unexplored. Here, we provide a general ...
  9. journals.aps.org

    May 1, 2024The Schwinger model describes quantum electrodynamics in $1+1$ dimensions, it is a prototype for quantum chromodynamics, and its lattice version allows for a quantum link model description that can be simulated using modern quantum devices. In this work, we devise quantum simulations to investigate the dynamics of this model in its low-dimensional form, where the gauge field degrees of freedom ...

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