2018

Transport in Floquet-Bloch bands

Fujiwara, C. J., Singh, Kevin, Geiger, Zachary A. et al.

Understand

We report Floquet band engineering of long-range transport and direct imaging of Floquet-Bloch bands in an amplitude-modulated optical lattice.

  • In one variety of Floquet-Bloch band we observe tunable rapid long-range high-fidelity transport of a Bose condensate across thousands of lattice sites.
  • Quenching into an opposite-parity Floquet-hybridized band allows Wannier-Stark localization to be controllably turned on and off using modulation.
  • A central result of this work is the use of transport dynamics to demonstrate direct imaging of a Floquet-Bloch band structure.

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