Please use this identifier to cite or link to this item:
https://hdl.handle.net/2445/148458
Title: | Tunneling vortex dynamics in linearly coupled Bose-Hybbard rings |
Author: | Escrivà, Albert Muñoz Mateo, Antonio Guilleumas, Montserrat Juliá-Díaz, Bruno |
Keywords: | Vòrtexs Superfluïdesa Condensació de Bose-Einstein Vortex-motion Superfluidity Bose-Einstein condensation |
Issue Date: | 9-Dec-2019 |
Publisher: | American Physical Society |
Abstract: | The quantum dynamics of population-balanced fractional vortices and population-imbalanced vortices in an effective two-state bosonic system, made of two coupled discrete circuits with few sites, is addressed within the Bose-Hubbard model. We show that, for low on-site interaction, the tunneling of quantized vortices between the rings performs a coherent, oscillating dynamics connecting current states with chiral symmetry. The vortex-flux transfer dually follows the usual sinusoidal particle current of the Josephson effect, in good agreement with a mean-field approximation. Within such a regime, the switch of persistent currents in the rings resembles flux-qubit features and is feasible for experimental realization. On the contrary, strong interatomic interactions suppress the chiral current and lead the system into fragmented condensation. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevA.100.063621 |
It is part of: | Physical Review A, 2019, vol. 100, p. 063621 |
URI: | https://hdl.handle.net/2445/148458 |
Related resource: | https://doi.org/10.1103/PhysRevA.100.063621 |
ISSN: | 2469-9926 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
693879.pdf | 1.62 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.