Collisions of dark solitons in elongated Bose-Einstein condensates

S Stellmer, C Becker, P Soltan-Panahi, EM Richter, S Doerscher, M Baumert, J Kronjaeger, Kai Bongs, K Sengstock

Research output: Contribution to journalArticle

140 Citations (Scopus)


We present experimental data showing the head-on collision of dark solitons generated in an elongated Bose-Einstein condensate. No discernable interaction can be recorded, in full agreement with the fundamental theoretical concepts of solitons as mutually transparent quasiparticles. Our soliton generation technique allows for the creation of solitons with different depths; hence, they can be distinguished and their trajectories be followed. Simulations of the 1D-Gross-Pitaevskii equation have been performed to compare the experiment with a mean-field description.
Original languageEnglish
Pages (from-to)120406
Number of pages1
JournalPhysical Review Letters
Issue number12
Publication statusPublished - 1 Sept 2008


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