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Effective Three-Body Interactions in Jaynes-Cummings-Hubbard Systems

Lookup NU author(s): Dr Srivatsa BadariprasadORCiD

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Abstract

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.

Publication metadata

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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