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  • Measuring Chern numbers in Hofstadter strips 

    Mugel, Samuel; dauphin, Alexandre; Massignan, Pietro Alberto; Tarruell, Leticia; Lewenstein, Maciej; Lobo, Carlos; Celi, Alessio (2017-08-15)
    Article
    Open Access
    Topologically non-trivial Hamiltonians with periodic boundary conditions are characterized by strictly quantized invariants. Open questions and fundamental challenges concern their existence, and the possibility of measuring ...
  • Three-dimensional droplets of swirling superfluids 

    Kartashov, Yaroslav V.; Malomed, Boris A.; Tarruell, Leticia; Torner Sabata, Lluís (American Physical Society (APS), 2018-07-12)
    Article
    Open Access
    A new method for the creation of 3D solitary topological modes, corresponding to vortical droplets of a two-component dilute superfluid, is presented. We use the recently introduced system of nonlinearly coupled Gross-Pitaevskii ...