Séminaire du LPTMS: Leonardo Mazza


11:00 - 12:15

LPTMS, salle 201, 2ème étage, Bât 100, Campus d'Orsay
15 Rue Georges Clemenceau, Orsay, 91405

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Interacting gases with a synthetic gauge field in the synthetic dimension

Leonardo Mazza (Ecole Normale Supérieure / PSL Research University, CNRS)

Synthetic ladders realized with one-dimensional alkaline-earth(-like) fermionic gases and subject to a gauge field represent a promising environment for the investigation of quantum Hall physics with ultracold atoms. We unveil the existence of a hierarchy of fractional insulating and conducting states by means of both analytical bosonization techniques and numerical methods based on the density-matrix renormalization group algorithm. We show that such states can be exploited for constructing a topological Thouless pump where the charge transported after one cycle is quantized to fractional values and demonstrate this behavior with a full many-body time-dependent calculation.

1 – S. Barbarino, L. Taddia, D. Rossini, L. Mazza, R. Fazio, Nat. Commun. 6, 8134 (2015)

2 – S. Barbarino, L. Taddia, D. Rossini, L. Mazza, R. Fazio, New J. Phys. 18, 035010 (2016)

3 – L. Taddia, E. Cornfeld, D. Rossini, L. Mazza, E. Sela, R. Fazio, in preparation

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