Parametric Driving of Dark Solitons in Atomic Bose-Einstein Condensates

Details Parametric Driving of Dark Solitons in Atomic Bose-Einstein Condensates Parametric Driving of Dark Solitons in Atomic Bose-Einstein Condensates

2004-03-22

arxiv.org/abs/cond-mat/0403566v2

Physics

Condensed Matter

Other Condensed Matter

PRL Accepted. Changes: Clarified distinction between 2 regimes of long-term soliton stabilization: (a) against decay, (b) at f

Scientific paper

10.1103/PhysRevLett.93.130408

A dark soliton oscillating in an elongated harmonically-confined atomic Bose-Einstein condensate continuously exchanges energy with the sound field. Periodic optical `paddles' are employed to controllably enhance the sound density and transfer energy to the soliton, analogous to parametric driving. In the absence of damping, the amplitude of the soliton oscillations can be dramatically reduced, whereas with damping, a driven soliton equilibrates as a stable dark soliton with lower energy, thereby extending the soliton lifetime up to the lifetime of the condensate.

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