2010/01/08 by Elmar Haller, Russell Hart, Manfred J. Mark +4
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum chaos and dynamical systems #Quantum optics and atomic interactions #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.104.200403
published as Phys. Rev. Lett. 104, 200403 (2010) · 4 pages, 5 figures
arxiv created 2010/01/08 · openalex publication_date 2010/05/21 · arxiv updated 2010/06/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
Particles in a perfect lattice potential perform Bloch oscillations when subject to a constant force, leading to localization and preventing conductivity. For a weakly interacting Bose-Einstein condensate of Cs atoms, we observe giant center-of-mass oscillations in position space with a displacement across hundreds of lattice sites when we add a periodic modulation to the force near the Bloch frequency. We study the dependence of these "super" Bloch oscillations on lattice depth, modulation amplitude, and modulation frequency and show that they provide a means to induce linear transport in a dissipation-free lattice.