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Lookup NU author(s): Dr Srivatsa BadariprasadORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
A generalisation of the Jaynes-Cummings-Hubbard model for coupled-cavity arrays is introduced, where the embedded two-level system in each cavity is replaced by a Ξ-type three-level system. We demonstrate that the resulting effective polariton-polariton interactions at each site are both two-body and three-body. By tuning the ratio of the two transition dipole matrix elements, we show that the strength and sign of the two-body interaction can be controlled whilst maintaining a three-body repulsion. We then proceed to demonstrate how different two-body and three-body interactions alter the mean field superfluid-Mott insulator phase diagram, with the possible emergence of a pair superfluid phase in the two-body attractive regime.
Author(s): Prasad SB, Martin AM
Publication type: Article
Publication status: Published
Journal: Scientific Reports
Year: 2018
Volume: 8
Online publication date: 02/11/2018
Acceptance date: 08/10/2018
Date deposited: 03/12/2021
ISSN (electronic): 2045-2322
Publisher: Springer Nature
URL: https://doi.org/10.1038/s41598-018-33907-9
DOI: 10.1038/s41598-018-33907-9
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