Interconversion of dark soliton and Josephson vortex in a quasi-1D long Bose Josephson junction
Abstract
Description
Dark soliton (DS) and Josephson vortex (JV) in quasi-1D long Bose Josephson junction (BJJ) can be interconverted by tuning Josephson coupling. Rates of the interconversion as well as of the thermally activated phase-slip effect, resulting in the JV switching its vorticity, have been evaluated. The role of quantum phase-slip in creating superposition of JVs with opposite vorticities as a qubit is discussed as well. Utilization of the JV for controlled and coherent transfer of atomic Bose-Einstein condensate (BEC) is suggested.
4 pages, 2 figures, revtex4. This is a revised version: results of numerical simulations and 1 figure are added
4 pages, 2 figures, revtex4. This is a revised version: results of numerical simulations and 1 figure are added