A dipolar self-induced bosonic Josephson junction
Abstract
We propose a new scheme for observing Josephson oscillations and macroscopic quantum self-trapping phenomena in a toroidally confined Bose-Einstein condensate: a dipolar self-induced Josephson junction. Polarizing the atoms perpendicularly to the trap symmetry axis, an effective ring-shaped, double-well potential is achieved which is induced by the dipolar interaction. By numerically solving the three-dimensional time-dependent Gross-Pitaevskii equation we show that coherent tunneling phenomena such as Josephson oscillations and quantum self-trapping can take place. The dynamics in the self-induced junction can be qualitatively described by a two-mode model taking into account both s-wave and dipolar interactions.
Keywords
Cite
@article{arxiv.1011.5177,
title = {A dipolar self-induced bosonic Josephson junction},
author = {M. Abad and M. Guilleumas and R. Mayol and M. Pi and D. M. Jezek},
journal= {arXiv preprint arXiv:1011.5177},
year = {2015}
}
Comments
Major changes. Accepted for publication in EPL