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Area of Science:

  • Quantum physics
  • Atomic physics
  • Condensed matter physics

Background:

  • Floquet engineering allows dynamic control of quantum systems.
  • Optical lattices provide a platform for simulating condensed matter phenomena.

Purpose of the Study:

  • To engineer Floquet band structures for long-range transport.
  • To directly image Floquet-Bloch bands.
  • To enable quantum emulation of electronic dynamics.

Main Methods:

  • Amplitude modulation of an optical lattice.
  • Observation of Bose condensate transport.
  • Transport dynamics to image band structure.

Main Results:

  • Achieved tunable, rapid, long-range, high-fidelity transport.
  • Demonstrated control over Wannier-Stark localization.
  • Successfully imaged Floquet-Bloch band structure via transport dynamics.

Conclusions:

  • Dynamical Floquet-Bloch band transport maps to quasistatic effective bands.
  • Opens new avenues for cold atom quantum simulation of ultrafast electronic dynamics.