2018/06/30 by Cora J. Fujiwara, C. J. Fujiwara, Kevin Singh +8 · 1 citation
Physics and Astronomy · #Advanced Fiber Laser Technologies #Amplitude #Bloch oscillations #Bloch wave #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Floquet theory #Lattice (music) #Optical lattice #Physics #Quantum mechanics #Strong Light-Matter Interactions #Superlattice #cond-mat.quant-gas #physics.atom-ph
paper · pdf · doi:10.1103/physrevlett.122.010402
published as Phys. Rev. Lett. 122, 010402 (2019) · 5 pages, 4 figures
openalex publication_date 2019/01/08 · arxiv created 2019/02/08 · arxiv updated 2019/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 bands 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. These results demonstrate that transport in dynamical Floquet-Bloch bands can be mapped to transport in quasistatic effective bands, opening a path to cold atom quantum emulation of ultrafast multiband electronic dynamics.