Controlled quantum stirring of Bose-Einstein condensates

Moritz Hiller, Tsampikos Kottos, Doron Cohen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

By cyclic adiabatic change of two control parameters of an optical trap one can induce a circulating current of condensed bosons. The amount of particles that are transported per period depends on the "radius" of the cycle, and this dependence can be utilized in order to probe the interatomic interactions. For strong repulsive interaction the current can be regarded as arising from a sequence of Landau-Zener crossings. For weaker interaction one observes either gradual or coherent mega crossings, while for attractive interaction the particles are glued together and behave like a classical ball. For the analysis we use the Kubo approach to quantum pumping with the associated Dirac monopoles picture of parameter space.

Original languageEnglish
Article number013602
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume78
Issue number1
DOIs
StatePublished - 1 Jul 2008

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