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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·K. Sengstock·W. Ertmer
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Abstract

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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K. Bongs, S. Burger, D. Hellweg, M. Kottke, S. Dettmer, T. Rinkleff, L. Cacciapuoti, J. Arlt, K. Sengstock, W. Ertmer. 2003-01-07. Spectroscopy of Dark Soliton States in Bose-Einstein Condensates. https://doi.org/10.1088/1464-4266%2F5%2F2%2F369

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