Quantum dynamics in the bosonic Josephson junction
Quantum Physics
2010-11-18 v2 Mesoscale and Nanoscale Physics
Quantum Gases
Abstract
We employ a semiclassical picture to study dynamics in a bosonic Josephson junction with various initial conditions. Phase-diffusion of coherent preparations in the Josephson regime is shown to depend on the initial relative phase between the two condensates. For initially incoherent condensates, we find a universal value for the buildup of coherence in the Josephson regime. In addition, we contrast two seemingly similar on-separatrix coherent preparations, finding striking differences in their convergence to classicality as the number of particles increases.
Cite
@article{arxiv.1001.2120,
title = {Quantum dynamics in the bosonic Josephson junction},
author = {Maya Chuchem and Katrina Smith-Mannschott and Moritz Hiller and Tsampikos Kottos and Amichay Vardi and Doron Cohen},
journal= {arXiv preprint arXiv:1001.2120},
year = {2010}
}
Comments
18 pages, 8 figures, improved version, pedagogical orientation, 3 extra appendices that are not included in the published version