Controlled generation of dark solitons with phase imprinting.
The generation of dark solitons in Bose-Einstein condensates with phase imprinting is studied by mapping it into the classic problem of a damped driven pendulum. We provide a simple but powerful scheme, designing the phase imprint for various desired outcomes of soliton generation. For a given phase step, we derive a formula for the number of dark solitons traveling in each direction, and examine the physics behind the generation of counterpropagating dark solitons.
Wu
Biao
B
Department of Physics, The University of Texas, Austin, Texas 78712-1081, USA.
Liu
Jie
J
Niu
Qian
Q