Collapse and revival oscillations as a probe for the tunneling amplitude in an ultracold Bose gas

F. Alexander Wolf, Itay Hen, Marcos Rigol

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Abstract

We present a theoretical study of the quantum corrections to the revival time due to finite tunneling in the collapse and revival of matter-wave interference after a quantum quench. We study hard-core bosons in a superlattice potential and the Bose-Hubbard model by means of exact numerical approaches and mean-field theory. We consider systems without and with a trapping potential present. We show that the quantum corrections to the revival time can be used to accurately determine the value of the hopping parameter in experiments with ultracold bosons in optical lattices.

Original languageEnglish (US)
Article number043601
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume82
Issue number4
DOIs
StatePublished - Oct 6 2010

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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