Glassy behavior in a binary atomic mixture

Abstract

We experimentally study one-dimensional, lattice-modulated Bose gases in the presence of an uncorrelated disorder potential formed by localized impurity atoms, and compare to the case of correlated quasi-disorder formed by an incommensurate lattice. While the effects of the two disorder realizations are comparable deeply in the strongly interacting regime, both showing signatures of Bose glass formation, we find a dramatic difference near the superfluid-to-insulator transition. In this transition region, we observe that random, uncorrelated disorder leads to a shift of the critical lattice depth for the breakdown of transport as opposed to the case of correlated quasi-disorder, where no such shift is seen. Our findings, which are consistent with recent predictions for interacting bosons in one dimension, illustrate the important role of correlations in disordered atomic systems.

5 pages, 4 figures

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• Critical Behavior and Fractality in Shallow One-Dimensional Quasiperiodic Potentials
• Observation of a disordered bosonic insulator from weak to strong interactions
• Cold atoms in the presence of disorder
• Engineering a flux-dependent mobility edge in disordered zigzag chains
• Observing localisation in a 2D quasicrystalline optical lattice
• Bosonic Mott Insulator with Meissner Currents
• Probing the Bose-Glass--Superfluid Transition using Quantum Quenches of Disorder
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• Ultracold bosons with short-range interaction in regular optical lattices
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• Degenerate Bose-Fermi mixtures of rubidium and ytterbium
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• Effect of disorder close to the superfluid transition in a two-dimensional Bose gas
• Bogoliubov Theory of Dipolar Bose Gas in Weak Random Potential
• Ballistic, diffusive, and arrested transport in disordered momentum-space lattices
• Observing the two-dimensional Bose glass in an optical quasicrystal
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• Dimer, trimer and FFLO liquids in mass- and spin-imbalanced trapped binary mixtures in one dimension
• Probing an Ultracold-Atom Crystal with Matter Waves
• Formation of Matter-Wave Polaritons in an Optical Lattice
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• Quantum tricriticality at the superfluid-insulator transition of binary Bose mixtures
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• Integrable families of hard-core particles with unequal masses in a one-dimensional harmonic trap
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• Thermodynamic Phase Diagram of Two-Dimensional Bosons in a Quasicrystal Potential
• Mean-field phases of an ultracold gas in a quasicrystalline potential
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• Bogoliubov theory on the disordered lattice
• Hartree-Fock Mean-Field Theory for Trapped Dirty Bosons
• State engineering of impurities in a lattice by coupling to a Bose gas
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• Superfluid Bloch dynamics in an incommensurate lattice
• Collisional stability of localized Yb(${}^3{\mathrm{P}}_2$) atoms immersed in a Fermi sea of Li
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• Expansion of a matter wave packet in a one-dimensional disordered potential in the presence of a uniform bias force
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• Synthetic Random Flux Model in a periodically-driven optical lattice
• Dynamics of Negativity of a Wannier-Stark Many-Body Localized System Coupled to a Bath
• Transport of Hubbard-Band Quasiparticles in Disordered Optical Lattices
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• In-situ magnetometry for experiments with atomic quantum gases
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