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Excitations of Bose-Einstein condensates in a one-dimensional periodic potential
N. Fabbri, D. Clément, L. Fallani +4
We report on the experimental investigation of the response of a three-dimensional Bose-Einstein condensate (BEC) in the presence of a one-dimensional (1D) optical lattice. By mean…
Exploring correlated 1D Bose gases from the superfluid to the Mott-insulator state by inelastic light scattering
D. Clément, N. Fabbri, L. Fallani +2
We report the Bragg spectroscopy of interacting one-dimensional Bose gases loaded in optical lattices across the superfluid to Mott-insulator phase transition. Elementary excitatio…
Noise correlation spectroscopy of the broken order of a Mott insulating phase
V. Guarrera, N. Fabbri, L. Fallani +3
We use a two-color lattice to break the homogeneous site occupation of an atomic Mott Insulator of bosonic 87Rb. We detect the disruption of the ordered Mott domains via noise corr…
Effect of interactions on the localization of a Bose-Einstein condensate in a quasi-periodic lattice
J. E. Lye, L. Fallani, C. Fort +4
The transport properties of a Bose-Einstein condensate in a 1D incommensurate bichromatic lattice are investigated both theoretically and experimentally. We observe a blockage of t…
Towards a Bose-Glass of ultracold atoms in a disordered crystal of light
L. Fallani, J. E. Lye, V. Guarrera +2
Starting from one-dimensional Mott Insulators, we use a bichromatic optical lattice to add controlled disorder to an ideal optical crystal where bosonic atoms are pinned by repulsi…
Effect of optical disorder and single defects on the expansion of a Bose-Einstein condensate in a one-dimensional waveguide
C. Fort, L. Fallani, V. Guarrera +4
We investigate the one-dimensional expansion of a Bose-Einstein condensate in an optical guide in the presence of a random potential created with optical speckles. With the speckle…