Analogues of Josephson junctions and black hole event horizons in atomic Bose-Einstein condensates
Quantum Gases
2018-11-14 v1
Abstract
We study dynamical processes in coherently coupled atomic Bose-Einstein condensates. Josephson effects in ring-shaped and dumbbell geometries are theoretically investigated. Conditions for observation of the Josephson effect are revealed. We found that multicharged persistent current in toroidal condensate can be robust even for supersonic atomic flow. In numerical simulations the acoustic analogues of event horizon in quantized superflow was observed. These theoretical finding open perspectives for investigation of Bose Josephson junctions and quantum aspects of acoustic analogue of Hawking radiation in existing experimental setups.
Keywords
Cite
@article{arxiv.1805.00696,
title = {Analogues of Josephson junctions and black hole event horizons in atomic Bose-Einstein condensates},
author = {A. I. Yakimenko and O. I. Matsyshyn and A. O. Oliinyk and V. M. Biloshytskyi and O. G. Chelpanova and S. I. Vilchynskii},
journal= {arXiv preprint arXiv:1805.00696},
year = {2018}
}
Comments
11 pages, 10 figures