Phonon-Josephson resonances in atomtronic circuits
Quantum Gases
2016-09-09 v2
Abstract
We study the resonant excitation of sound modes from Josephson oscillations in Bose-Einstein condensates. From the simulations for various setups using the Gross-Pitaevskii mean-field equations and Josephson equations we observe additional tunneling currents induced by resonant phonons. The proposed experiment may be used for spectroscopy of phonons as well as other low-energy collective excitations in Bose-Einstein condensates. We also argue that the observed effect may mask the observation of Shapiro resonances if not carefully controlled.
Cite
@article{arxiv.1607.06590,
title = {Phonon-Josephson resonances in atomtronic circuits},
author = {Y. M. Bidasyuk and O. O. Prikhodko and M. Weyrauch},
journal= {arXiv preprint arXiv:1607.06590},
year = {2016}
}
Comments
8 pages, 11 figures. Updated to match the published version