Quantum Phases of Ultracold Bosonic Atoms in a Two-Dimensional Optical Superlattice

2007/05/14 by Jing-Min Hou, Hou, Jing-Min
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Other Condensed Matter (cond-mat.other)

paper · pdf · doi:10.48550/arxiv.0705.1888

openalex publication_date 2007/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study quantum phases of ultracold bosonic atoms in a two-dimensional optical superlattice. The extended Bose-Hubbard model derived from the system of ultracold bosonic atoms in an optical superlattice is solved numerically with Gutzwiller approach. We find that the modulated superfluid(MS), Mott-insulator (MI) and density-wave(DW) phases appear in some regimes of parameters. The experimental detection of the first order correlations and the second order correlations of different quantum phases with time-of-flight and noise-correlation techniques is proposed.

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