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Bright gap solitons of atoms with repulsive interaction

B. Eiermann·Th. Anker·M. Albiez·M. Taglieber·P. Treutlein·K. P. Marzlin·M. K. Oberthaler
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Abstract

We report on the first experimental observation of bright matter-wave solitons for 87Rb atoms with repulsive atom-atom interaction. This counter intuitive situation arises inside a weak periodic potential, where anomalous dispersion can be realized at the Brillouin zone boundary. If the coherent atomic wavepacket is prepared at the corresponding band edge a bright soliton is formed inside the gap. The strength of our system is the precise control of preparation and real time manipulation, allowing the systematic investigation of gap solitons.

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B. Eiermann, Th. Anker, M. Albiez, M. Taglieber, P. Treutlein, K. P. Marzlin, M. K. Oberthaler. 2004-02-05. Bright gap solitons of atoms with repulsive interaction. https://doi.org/10.1103/physrevlett.92.230401

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