Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.065302
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Funding
- NSF [DMS-0803074, DMS-1008973]
- ARO
- NCSU
- Direct For Mathematical & Physical Scien
- Division Of Physics [0969867] Funding Source: National Science Foundation
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The dynamics of two penetrating superfluids exhibit an intriguing variety of nonlinear effects. Using two distinguishable components of a Bose-Einstein condensate, we investigate the counterflow of two superfluids in a narrow channel. We present the first experimental observation of trains of dark-bright solitons generated by the counterflow. Our observations are theoretically interpreted by three-dimensional numerical simulations for the coupled Gross-Pitaevskii equations and the analysis of a jump in the two relatively flowing components' densities. Counterflow-induced modulational instability for this miscible system is identified as the central process in the dynamics.
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