Mixtures of Strongly Interacting Bosons in Optical Lattices

Journal Article · Fri Jun 20 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.240402· OSTI ID:21134032

Buonsante, P; Penna, V ^[1]; Giampaolo, S M ^[2]; Illuminati, F ^[2]; Vezzani, A ^[3]

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1. C.N.I.S.M. and Dipartimento di Fisica, Politecnico di Torino, C.so Duca degli Abruzzi 24, I-10129 Torino (Italy)
2. Dipartimento di Matematica e Informatica, Universita degli Studi di Salerno, Via Ponte don Melillo, 84084 Fisciano (Italy)
3. CNR-INFM and Dipartimento di Fisica, Universita degli Studi di Parma, V.le G.P. Usberti n.7/A, I-43100 Parma (Italy)

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 {sup 41}K induces a significant loss of coherence in {sup 87}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.

• OSTI ID: 21134032
• Journal Information: Physical Review Letters, Vol. 100, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.100.240402; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
36 MATERIALS SCIENCE
BOSONS
INTERACTING BOSON MODEL
POTASSIUM 41
QUANTUM MECHANICS
RUBIDIUM 87