Nonlinear Josephson-type oscillations of a driven, two-component Bose-Einstein condensate

J. Williams; R. Walser; J. Cooper; E. Cornell; M. Holland

doi:10.1103/PhysRevA.59.R31

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Nonlinear Josephson-type oscillations of a driven, two-component Bose-Einstein condensate

J. Williams, R. Walser, J. Cooper, E. Cornell, M. Holland

DOI 10.1103/PhysRevA.59.R31 · Physical Review A

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Abstract

We propose an experiment that would demonstrate nonlinear Josephson-type oscillations in the relative population of a driven, two-component Bose-Einstein condensate. An initial state is prepared in which two condensates exist in a magnetic trap, each in a different hyperfine state, where the initial populations and relative phase between condensates can be controlled within experimental uncertainty. A weak driving field is then applied, which couples the two internal states of the atom and consequently transfers atoms back and forth between condensates. We present a model of this system and investigate the effect of the mean field on the dynamical evolution.