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Area of Science:

  • Quantum computing and simulation
  • Atomic physics and quantum optics
  • Condensed matter theory

Background:

  • Neutral atom arrays in Rydberg states are promising for programmable quantum systems.
  • Rydberg blockade enables simulation of complex spin models and quantum dynamics.

Purpose of the Study:

  • Introduce a novel Floquet engineering technique for Rydberg-atom systems in the blockade regime.
  • Enable control over new interactions and entanglement dynamics.
  • Explore applications in quantum simulation and entanglement generation.

Main Methods:

  • Time-dependent control of Rydberg laser detuning.
  • Leveraging perturbations around periodic many-body trajectories for operator spreading.
  • Engineering interactions in the effective Hamiltonian for stroboscopic evolution.

Main Results:

  • Demonstrated engineering of strong spin exchange in a 1D chain, consistent with Rydberg blockade.
  • Enabled exploration of gapless Luttinger liquid phases.
  • Showcased dynamic generation of large-scale multipartite entanglement by combining gapless excitations with Rydberg blockade.

Conclusions:

  • The developed Floquet engineering technique offers precise control over neutral atom arrays.
  • The method facilitates the simulation of complex quantum phenomena and the generation of multipartite entanglement.
  • The approach is experimentally feasible and allows for generalizations.