Data for "Fermi accelerating an Anderson-localized Fermi gas to superdiffusion"

2023/11/14 by Sian Barbosa, Barbosa, Sian, Maximilian Kiefer-Emmanouilidis +7 · 1 citation
Physics and Astronomy · #Spectroscopy and Quantum Chemical Studies #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics

paper · pdf · doi:10.48550/arxiv.2311.08224

Abstract

Anderson localization, i.e., destructive quantum interference of multiple-scattering paths, halts transport entirely. Contrarily, time-dependent random forces expedite transport via Fermi acceleration, proposed as a mechanism for high-energy cosmic rays. Their competition creates interesting dynamics, but experimental observations are scarce. Here, we experimentally study the expansion of an ultracold Fermi gas inside time-dependent disorder and observe distinct regimes from sub- to superdiffusion. Unexpectedly, quantum interference counteracts acceleration in strong disorder. Our system enables the investigation of Fermi acceleration in the quantum-transport regime.

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• Anderson localization of quantum droplets in disordered potentials

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