Publication details for Prof Simon CornishMarchant, A.L., Billam, T.P., Wiles, T.P., Yu, M.M.H., Gardiner, S.A. & Cornish, S.L. (2013). Controlled formation and reflection of a bright solitary matter-wave. Nature Communications 4: 1865.
- Publication type: Journal Article
- ISSN/ISBN: 2041-1723
- DOI: 10.1038/ncomms2893
- Keywords: Physical sciences, Atomic and molecular physics
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
Bright solitons are non-dispersive wave solutions, arising in a diverse range of nonlinear, one-dimensional systems, including atomic Bose–Einstein condensates with attractive interactions. In reality, cold-atom experiments can only approach the idealized one-dimensional limit necessary for the realization of true solitons. Nevertheless, it remains possible to create bright solitary waves, the three-dimensional analogue of solitons, which maintain many of the key properties of their one-dimensional counterparts. Such solitary waves offer many potential applications and provide a rich testing ground for theoretical treatments of many-body quantum systems. Here we report the controlled formation of a bright solitary matter-wave from a Bose–Einstein condensate of 85Rb, which is observed to propagate over a distance of ~1.1 mm in 150 ms with no observable dispersion. We demonstrate the reflection of a solitary wave from a repulsive Gaussian barrier and contrast this to the case of a repulsive condensate, in both cases finding excellent agreement with theoretical simulations using the three-dimensional Gross–Pitaevskii equation.