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arxiv: cond-mat/0301069 · v1 · submitted 2003-01-07 · ❄️ cond-mat

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Spectroscopy of Dark Soliton States in Bose-Einstein Condensates

K. Bongs , S. Burger , D. Hellweg , M. Kottke , S. Dettmer , T. Rinkleff , L. Cacciapuoti , J. Arlt
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K. Sengstock W. Ertmer
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classification ❄️ cond-mat
keywords bose-einsteincondensatessolitondarkexperimentalimprintingnumericalphase
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Experimental and numerical studies of the velocity field of dark solitons in Bose-Einstein condensates are presented. The formation process after phase imprinting as well as the propagation of the emerging soliton are investigated using spatially resolved Bragg-spectroscopy of soliton states in Bose-Einstein condensates of Rubidium87. A comparison of experimental data to results from numerical simulations of the Gross-Pitaevskii equation clearly identifies the flux underlying a dark soliton propagating in a Bose-Einstein condensate. The results allow further optimization of the phase imprinting method for creating collective exitations of Bose-Einstein condensates.

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