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Splitting in the Excitation Spectrum of A Bose-Einstein Condensate Undergoing Strong Rabi Oscillations

E. Rowen·R. Ozeri·N. Katz·E. Gershnabel·N. Davidson
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Abstract

We report on a measurement of splitting in the excitation spectrum of a condensate driven by an optical travelling wave. Experimental results are compared to a numerical solution of the Gross Pitaevskii equation, and analyzed by a simple two level model and by the more complete band theory, treating the driving beams as an optical lattice. In this picture, the splitting is a manifestation of the energy gap between neighboring bands that opens on the boundary of the Brillouin zone.

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E. Rowen, R. Ozeri, N. Katz, E. Gershnabel, N. Davidson. 2005-06-23. Splitting in the Excitation Spectrum of A Bose-Einstein Condensate Undergoing Strong Rabi Oscillations. https://doi.org/10.1103/physreva.72.053614

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