Beyond standard two-mode dynamics in bosonic Josephson junctions
B. Juliá-Díaz, J. Martorell, M. Melé-Messeguer, A. Polls
DOI 10.1103/PhysRevA.82.063626 · Physical Review A
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Abstract
We examine the dynamics of a Bose-Einstein condensate in a symmetric double-well potential for a broad range of nonlinear 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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