Experimental observation of oscillating and interacting matter wave dark solitons

Abstract

We report on the generation, subsequent oscillation and interaction of a pair of matter wave dark solitons. These are created by releasing a Bose-Einstein condensate from a double well potential into a harmonic trap in the crossover regime between one dimension (1D) and three dimensions (3D). The oscillation of the solitons is observed and the frequency is in quantitative agreement with simulations using the Gross-Pitaevskii equation. An effective particle picture is developed and reveals that the deviation of the observed frequencies from the asymptotic prediction ${\nu }_z/\sqrt{2}$, where ${\nu }_z$ is the longitudinal trapping frequency, results from the dimensionality of the system and the interaction between the solitons.

5 pages, 3 figures

References in corpus (6)

• Oscillations and interactions of dark and dark-bright solitons in Bose-Einstein condensates
• Observation of attraction between dark solitons
• Stationary and non-stationary fluid flow of a Bose-Einstein condensate through a penetrable barrier
• Phase Sensitive Recombination of Two Bose-Einstein Condensates on an Atom Chip
• Dark matter-wave solitons in the dimensionality crossover
• Nonlinearity-assisted quantum tunneling in a matter-wave interferometer

Cited by in corpus (5)

• Oscillations and interactions of dark and dark-bright solitons in Bose-Einstein condensates
• Interaction of dark-bright solitons in two-component Bose-Einstein condensates
• Dynamics and modulation of ring dark soliton in 2D Bose-Einstein condensates with tunable interaction
• Solitons in Tonks-Girardeau gas with dipolar interactions
• Effective one-dimensional dynamics of elongated Bose-Einstein condensates