Past Seminars Seminários Já Decorridos 2009

Dissipation-induced coherent structures in one and two-dimensional Bose-Einstein condensates

By: Valeriy Brazhnyi
From: CFTC
At: Complexo Interdisciplinar, Anfiteatro
[2009-06-03] 12:00

We will present some recent results on the generation of different localized coherent structures in Bose-Einstein condensates induced by presence of spatially dependent dissipation. Controlled generation of localized coherent structures in one-dimensional configuration such as bright and dark solitons can be realized. In the presence of periodic potential (optical lattice) one can produce dark and bright envelope solitons which emergence strongly dependent on the sign of interparticle interaction as well as on the chemical potential. In two-dimensions we will discuss possibility to generate and manage two-dimensional localized structures such as ring dark solitons and vorticies. As soon as we are considering dissipative system we will also propose possible experimental setups to overcome several problems related to the characteristic time of generation of the localized structure and time living of the condensate.