Beyond standard two-mode dynamics in Bosonic Josephson junctions

Details Beyond standard two-mode dynamics in Bosonic Josephson junctions Beyond standard two-mode dynamics in Bosonic Josephson junctions

2010-12-05

arxiv.org/abs/1012.1023v2

Phys. Rev. A 82, 063626 (2010

Physics

Condensed Matter

Quantum Gases

Accepted for publication Phys. Rev. A

Scientific paper

10.1103/PhysRevA.82.063626

We examine the dynamics of a Bose-Einstein condensate in a symmetric double-well potential for a broad range of non-linear couplings. We demonstrate the existence of a region, beyond those of Josephson oscillations and self-trapping, which involves the dynamical excitation of the third mode of the double-well potential. We develop a simple semiclassical model for the coupling between the second and third modes that describes very satisfactorily the full time-dependent dynamics. Experimental conditions are proposed to probe this phenomenon.

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