Matter wave scattering on an amplitude-modulated optical lattice

Abstract

We experimentally study the scattering of guided matter waves on an amplitude-modulated optical lattice. We observe different types of frequency-dependent dips in the asymptotic output density distribution. Their positions are compared quantitatively with numerical simulations. A semiclassical model that combines \emph{local} Floquet-Bloch bands analysis and Landau-Zener transitions provides a simple picture of the observed phenomena in terms of elementary \emph{Floquet photon} absorption-emission processes and envelope-induced reflections. Finally, we propose and demonstrate the use of this technique with a bichromatic modulation to design a tunable sub-recoil velocity filter. Such a filter can be transposed to all species since it does not rely on a specific internal level configuration of the atoms.

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Cited by in corpus (20)

• Precision Measurement of the 87-Rb Tune-Out Wavelength in the Hyperfine Ground State F=1 at 790 nm
• Transport in Floquet-Bloch bands
• Anisotropic dependence of tune-out wavelength near Dy 741-nm transition
• Principles of an atomtronic transistor
• Excitation of atoms in an optical lattice driven by polychromatic amplitude modulation
• Production and manipulation of wave packets from ultracold atoms in an optical lattice
• Resonant excitations of a Bose Einstein condensate in an optical lattice
• Birth of a quasi-stationary black hole in an outcoupled Bose-Einstein condensate
• Realization of tunnel barriers for matter waves using spatial gaps
• Direct cooling in an optical lattice by amplitude modulation
• Rotating Gaussian wave packets in weak external potentials
• Band gap structures for matter waves
• Manipulating quantum wave packets via time-dependent absorption
• Realization of the driven nonlinear Schrödinger equation with stationary light
• Lattice-depth measurement using multi-pulse atom diffraction in and beyond the weakly diffracting limit
• Comparison between two models of absorption of matter waves by a thin time-dependent barrier
• Quantum transport in the black-hole configuration of an atom condensate outcoupled through an optical lattice
• Lattice-depth measurement using continuous grating atom diffraction
• Phase-space representation of diffraction in time: Analytic results
• Robustness of perfect transmission resonances to asymmetric perturbation