Two-Mode Theory of BEC Interferometry
Abstract
A theory of BEC interferometry in an unsymmetrical double-well trap has been developed for small boson numbers, based on the two-mode approximation. The bosons are initially in the lowest mode of a single well trap, which is split into a double well and then recombined. Possible fragmentations into separate BEC states in each well during the splitting/recombination process are allowed for. The BEC is treated as a giant spin system, the fragmented states are eigenstates of S^2 and Sz. Self-consistent sets of equations for the amplitudes of the fragmented states and for the two single boson mode functions are obtained. The latter are coupled Gross-Pitaevskii equations. Interferometric effects may be measured via boson numbers in the first excited mode
Cite
@article{arxiv.quant-ph/0601012,
title = {Two-Mode Theory of BEC Interferometry},
author = {B J Dalton},
journal= {arXiv preprint arXiv:quant-ph/0601012},
year = {2015}
}
Comments
Four figures (7 files)