Elastic Scattering Time of Matter-Waves in Disordered Potentials

Abstract

We report on an extensive study of the elastic scattering time $\tauS$ of matter-waves in optical disordered potentials. Using direct experimental measurements, numerical simulations and comparison with first-order Born approximation based on the knowledge of the disorder properties, we explore the behavior of $\tauS$ over more than three orders of magnitude, spanning from the weak to the strong scattering regime. We study in detail the location of the crossover and, as a main result, we reveal the strong influence of the disorder statistics, especially on the relevance of the widely used Ioffe-Regel-like criterion $k\lS\sim 1$. While it is found to be relevant for Gaussian-distributed disordered potentials, we observe significant deviations for laser speckle disorders that are commonly used with ultracold atoms. Our results are crucial for connecting experimental investigation of complex transport phenomena, such as Anderson localization, to microscopic theories.

arXiv comment6+4 pages, 3+4 figures

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Cited by in corpus (14)

• Critical Behavior and Fractality in Shallow One-Dimensional Quasiperiodic Potentials
• Dynamical evolution in a one-dimensional incommensurate lattice with $\mathcal{P}\mathcal{T}$ symmetry
• Dynamical observation of mobility edges in one-dimensional incommensurate optical lattices
• The fate of reentrant localization phenomenon in the one-dimensional dimerized quasiperiodic chain with long-range hopping
• High-resolution real-space evaluation of the self-energy operator of disordered lattices: Gade singularity, spin-orbit effects and p-wave superconductivity
• Self-Consistent Quantum-Field Theory for the Characterization of Complex Random Media by Short Laser Pulses
• Time evolution of coherent wave propagation and spin relaxation in spin-orbit coupled systems
• Ultracold Atoms in Disordered Potentials: Elastic Scattering Time in the Strong Scattering Regime
• One-Dimensional Disordered Bosonic Systems
• Effective-medium approach to the resonance distribution of wave scattering in a random point field
• One- and Two-Particle Problem with Correlated Disorder Potential
• Anisotropy effects on the quantum transport of atomic matter waves
• Bichromatic state-dependent disordered potential for Anderson localization of ultracold atoms
• Mesoscopic scattering dynamics under generic uniform SU(2) gauge fields: Spin-momentum relaxation and coherent backscattering