%0 Journal Article
%T Proper phase imprinting method for a dark soliton excitation in a superfluid Fermi mixture
%A Krzysztof Sacha
%A Dominique Delande
%J Physics
%D 2014
%I arXiv
%R 10.1103/PhysRevA.90.021604
%X It is common knowledge that a dark soliton can be excited in an ultra-cold atomic gas by means of the phase imprinting method. We show that, for a superfluid fermionic mixture, the standard phase imprinting procedure applied to both components fails to create a state with symmetry properties identical to those of the dark soliton solution of the Bogoliubov-de Gennes equations. To produce a dark soliton in the BCS regime, a single component of the Fermi mixture should be phase imprinted only.
%U http://arxiv.org/abs/1406.6819v2