Finite temperature effects in two-mode bosonic Josephson junctions
Quantum Gases
2012-09-03 v1 Quantum Physics
Abstract
We analyze the effects of the temperature on a bosonic Josephson junction realized with ultracold and dilute atoms in a double-well potential. Starting from the eigenstates of the two-site Bose-Hubbard Hamiltonian, we calculate the coherence visibility and the fluctuation of the on-site occupation number and study them as functions of the temperature. We show that, contrary to naive expectations, when the boson-boson interaction is suitably chosen thermal effects can increase the coherence visibility and reduce the on-site number fluctuation.
Cite
@article{arxiv.1208.2349,
title = {Finite temperature effects in two-mode bosonic Josephson junctions},
author = {G. Mazzarella and L. Salasnich and F. Toigo},
journal= {arXiv preprint arXiv:1208.2349},
year = {2012}
}
Comments
16 pages, 8 figures; accepted for publication in J. Phys. B: At. Mol. Opt. Phys