Mixtures of strongly interacting bosons in optical lattices

Abstract

We investigate the properties of strongly interacting heteronuclear boson-boson mixtures loaded in realistic optical lattices, with particular emphasis on the physics of interfaces. In particular, we numerically reproduce the recent experimental observation that the addition of a small fraction of K induces a significant loss of coherence in Rb, providing a simple explanation. We then investigate the robustness against the inhomogeneity typical of realistic experimental realizations of the glassy quantum emulsions recently predicted to occur in strongly interacting boson-boson mixtures on ideal homogeneous lattices.

10 pages, 3 figures; some changes in the text and abstract have been introduced; coherence now given in terms of visibility; a couple of new reference added

References in corpus (10)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Bose-Fermi Mixtures in a Three-dimensional Optical Lattice
• Localization of bosonic atoms by fermionic impurities in a 3d optical lattice
• Degenerate Bose-Bose mixture in a three-dimensional optical lattice
• Metastable states of a gas of dipolar bosons in a 2D optical lattice
• Interference pattern and visibility of a Mott insulator
• Phase separation in a two species Bose mixture
• Mott-insulator phases of non-locally coupled 1D dipolar Bose gases
• Spin-1 bosons with coupled ground states in optical lattices
• First- and second-order superfluid--Mott-insulator phase transitions of spin-1 bosons with coupled ground states in optical lattices

Cited by in corpus (14)

• Superfluidity of Interacting Bosonic Mixtures in Optical Lattices
• Supersolidity of cold-atom Bose-Fermi mixtures in optical lattices
• Two-species boson mixture on a ring: A group theoretic approach to the quantum dynamics of low-energy excitations
• The mixing-demixing phase diagram of ultracold heteronuclear mixtures in a ring trimer
• Lattice polarons across the superfluid to Mott insulator transition
• Zero-temperature phase diagram of Bose-Fermi gaseous mixtures in optical lattices
• Quantum localization and bound state formation in Bose-Einstein condensates
• Residual entropy and critical behavior of two interacting boson species in a double well
• Unconventional quantum phases of lattice bosonic mixtures
• Quantum-granularity effect in the formation of supermixed solitons in ring lattices
• Dynamical effects of exchange symmetry breaking in mixtures of interacting bosons
• Sign reversal of the boson-boson interaction potential in planar Bose-Fermi mixtures under a synthetic magnetic field
• Out-of-Equilibrium Dynamics in the Two-Component Bose-Hubbard Model
• Miscibility-Immiscibility transition of strongly interacting bosonic mixtures in optical lattices