Oscillations of Bose-Einstein condensates in a one-dimensional optical superlattice

Chou Chun Huang*, Wen Chin Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Oscillations of atomic Bose-Einstein condensates in a 1D optical lattice with a two-point basis is investigated. In the low-frequency regime, four branches of modes are resolved, that correspond to the transverse in-phase and out-of-phase breathing modes, and the longitudinal acoustic and optical phonon modes of the condensates. Dispersions of these modes depend intimately on the values of two intersite Josephson tunneling strengths, J1 and J2, and the on-site repulsion U between the atoms. Observation of these mode dispersions is thus a direct way to access them.

Original languageEnglish
Article number065601
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number6
Publication statusPublished - 2005 Dec

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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