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Phys. Rev. Lett. 96, 043901 (2006) [4 pages]

Observation of Attraction between Dark Solitons

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Alexander Dreischuh1,2,3, Dragomir N. Neshev1, Dan E. Petersen2, Ole Bang4, and Wieslaw Krolikowski2
1Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Canberra ACT 0200, Australia
2Laser Physics Centre, The Australian National University, Canberra ACT 0200, Australia
3Department of Quantum Electronics, Faculty of Physics, Sofia University, Sofia, Bulgaria
4COM•DTU Department of Communications, Optics & Materials, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark

Received 21 March 2005; published 1 February 2006

We demonstrate a dramatic change in the interaction forces between dark solitons in nonlocal nonlinear media. We present what we believe is the first experimental evidence of attraction of dark solitons. Our results indicate that attraction should be observable in other nonlocal systems, such as Bose-Einstein condensates with repulsive long-range interparticle interaction.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.043901
DOI:
10.1103/PhysRevLett.96.043901
PACS:
42.65.Sf, 42.65.Jx, 42.65.Tg
 
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