2010/01/31 by Maya Chuchem, Katrina Smith-Mannschott, Moritz Hiller +3 · 1 citation
Physics and Astronomy · #quant-ph #cond-mat.mes-hall #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.82.053617
published as Phys. Rev. A 82, 053617 (2010) · 18 pages, 8 figures, improved version, pedagogical orientation, 3 extra appendices that are not included in the published version
arxiv created 2010/10/21 · arxiv updated 2010/11/18
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.