Hybrid architectures for terahertz molecular polaritonics

Author:

Jaber AhmedORCID,Reitz MichaelORCID,Singh Avinash,Maleki Ali,Xin Yongbao,Sullivan Brian T.,Dolgaleva KseniaORCID,Boyd Robert W.,Genes Claudiu,Ménard Jean-MichelORCID

Abstract

AbstractAtoms and their different arrangements into molecules are nature’s building blocks. In a regime of strong coupling, matter hybridizes with light to modify physical and chemical properties, hence creating new building blocks that can be used for avant-garde technologies. However, this regime relies on the strong confinement of the optical field, which is technically challenging to achieve, especially at terahertz frequencies in the far-infrared region. Here we demonstrate several schemes of electromagnetic field confinement aimed at facilitating the collective coupling of a localized terahertz photonic mode to molecular vibrations. We observe an enhanced vacuum Rabi splitting of 200 GHz from a hybrid cavity architecture consisting of a plasmonic metasurface, coupled to glucose, and interfaced with a planar mirror. This enhanced light-matter interaction is found to emerge from the modified intracavity field of the cavity, leading to an enhanced zero-point electric field amplitude. Our study provides key insight into the design of polaritonic platforms with organic molecules to harvest the unique properties of hybrid light-matter states.

Funder

Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada

Canada Foundation for Innovation

Max-Planck-Gesellschaft

Publisher

Springer Science and Business Media LLC

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