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Energy-Resolved Information Scrambling in Energy-Space Lattices.

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Weakly interacting Fermi gases allow studying quantum many-body systems. Researchers measured many-body coherence and information spreading, observing energy-dependent many-body coherence.

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Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Atomic physics

Background:

  • Weakly interacting Fermi gases serve as quantum simulators for spin lattices in energy space.
  • These systems are valuable for studying information spreading and spin coherence in many-body quantum systems.

Purpose of the Study:

  • To determine the collective spin vector as a function of energy from measured spin density.
  • To enable general energy-space resolved protocols.
  • To measure an out-of-time-order correlation function and observe its energy dependence.

Main Methods:

  • Utilizing weakly interacting Fermi gases as a quantum simulation platform.
  • Measuring spin density to determine the collective spin vector.
  • Employing out-of-time-order correlation measurements.

Main Results:

  • The collective spin vector was determined as a function of energy.
  • Energy-space resolved protocols were enabled.
  • The energy dependence of many-body coherence was observed through out-of-time-order correlation measurements.

Conclusions:

  • Weakly interacting Fermi gases provide a versatile platform for probing quantum many-body dynamics.
  • The energy-resolved characterization of spin dynamics is achievable.
  • Many-body coherence exhibits a measurable dependence on energy in these systems.