TY - JOUR
T1 - Degenerate Bose-Bose mixture in a three-dimensional optical lattice
AU - Catani, J.
AU - De Sarlo, L.
AU - Barontini, Giovanni
AU - Minardi, F.
AU - Inguscio, M.
PY - 2008/1/24
Y1 - 2008/1/24
N2 - We produce a heteronuclear quantum degenerate mixture of two bosonic species, Rb87 and K41, in a three-dimensional optical lattice. On raising the lattice barriers, we observe the disappearance of the inference pattern of the heavier Rb87, shifting toward shallower lattice depths in the presence of a minor fraction of K41. This effect is sizable and requires only a marginal overlap between the two species. We compare our results with similar findings reported for Fermi-Bose mixtures and discuss the interpretation scenarios proposed to date, arguing that the explanation may be linked to the increased effective mass due to the interspecies interactions.
AB - We produce a heteronuclear quantum degenerate mixture of two bosonic species, Rb87 and K41, in a three-dimensional optical lattice. On raising the lattice barriers, we observe the disappearance of the inference pattern of the heavier Rb87, shifting toward shallower lattice depths in the presence of a minor fraction of K41. This effect is sizable and requires only a marginal overlap between the two species. We compare our results with similar findings reported for Fermi-Bose mixtures and discuss the interpretation scenarios proposed to date, arguing that the explanation may be linked to the increased effective mass due to the interspecies interactions.
UR - http://www.scopus.com/inward/record.url?scp=38549110603&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.77.011603
DO - 10.1103/PhysRevA.77.011603
M3 - Article
AN - SCOPUS:38549110603
SN - 1050-2947
VL - 77
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 011603
ER -