Bright Bose-Einstein gap solitons of atoms with repulsive interaction

We report on the first experimental observation of bright matter wave solitons for 87Rb atoms with repulsive atom-atom interaction. This counterintuitive situation arises inside a weak periodic potential, where anomalous dispersion can be realized at the Brillouin zone boundary. If the coherent atom...

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Veröffentlicht in:	Physical review letters 2004-06, Vol.92 (23), p.230401.1-230401.4, Article 230401
Hauptverfasser:	EIERMANN, B, ANKER, Th, ALBIEZ, M, TAGLIEBER, M, TREUTLEIN, P, MARZLIN, K.-P, OBERTHALER, M. K
Format:	Artikel
Sprache:	eng
Schlagworte:	Atom and neutron optics Classical and quantum physics: mechanics and fields Exact sciences and technology Matter waves Nonlinear dynamics and nonlinear dynamical systems Physics Solitons Statistical physics, thermodynamics, and nonlinear dynamical systems
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Beschreibung
Zusammenfassung:	We report on the first experimental observation of bright matter wave solitons for 87Rb atoms with repulsive atom-atom interaction. This counterintuitive situation arises inside a weak periodic potential, where anomalous dispersion can be realized at the Brillouin zone boundary. If the coherent atomic wave packet 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.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.92.230401