Degenerate Bose-Bose mixture in a three-dimensional optical lattice

2007/06/30 by J. Catani, Jacopo Catani, L. De Sarlo +4 · 4 citations
Chemistry · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Spectroscopy and Laser Applications #cond-mat.other

paper · pdf · doi:10.1103/physreva.77.011603

published as Phys. Rev. A 77, 011603(R) (2008) · 5 pages, 4 figures

openalex publication_date 2008/01/24 · arxiv created 2008/01/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We produce a heteronuclear quantum degenerate mixture of two bosonic species, ⁸⁷Rb and ⁴¹K, in a three-dimensional optical lattice. On raising the lattice barriers, we observe the disappearance of the inference pattern of the heavier ⁸⁷Rb, shifting toward shallower lattice depths in the presence of a minor fraction of ⁴¹K. 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.

Citations

• Bose-Fermi Mixtures in a Three-Dimensional Optical Lattice
• Localization of Bosonic Atoms by Fermionic Impurities in a Three-Dimensional Optical Lattice
• Formation of Spatial Shell Structure in the Superfluid to Mott Insulator Transition
• Dynamics of Bose-Einstein condensates in optical lattices

Cited by

• Association of ultracold double-species bosonic molecules
• Heteronuclear quantum gas mixtures
• Phase-separated charge-density-wave phase in the two-species extended Bose-Hubbard model
• Rabi switch of condensate wave functions in a multicomponent Bose gas