Bright solitons and self-trapping with a Bose-Einstein condensate of atoms in driven tilted optical lattices
- Kirensky Institute of Physics and Siberian Federal University, 660036 Krasnoyarsk (Russian Federation)
We discuss a method for creating bright matter solitons by loading a Bose-Einstein condensate of atoms in a driven tilted optical lattice. It is shown that one can realize the self-focusing regime for the wave-packet dynamics by properly adjusting the phase of the driving field with respect to the phase of Bloch oscillations. If atom-atom interactions are larger than some critical value g{sub min}, this self-focusing regime is followed by the formation of bright solitons. Increasing the interactions above another critical value g{sub max} makes this process unstable. Instead of soliton formation one now meets the phenomenon of incoherent self-trapping. In this regime a fraction of atoms is trapped in incoherent localized wave packets, while the remaining atoms spread ballistically.
- OSTI ID:
- 21442878
- Journal Information:
- Physical Review. A, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevA.82.011601; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multiple dark-bright solitons in atomic Bose-Einstein condensates
Spontaneous soliton symmetry breaking in two-dimensional coupled Bose-Einstein condensates supported by optical lattices