Ultrastrong coupling of plasmonic metamaterials and photons in a terahertz photonic crystal cavity

Light-matter interaction in the strong coupling regime is of profound interest for fundamental quantum optics and applications. Here, we report a new type of strong light-matter interaction of metamaterial `quasi-particles' with photons in a photonic crystal cavity in the terahertz frequency ra...

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Bibliographic Details
Main Authors: Meng, Fanqi, Thomson, Mark D., Klug, Bernhard, Cibiraite, Dovile, ul-Islam, Qamar, Roskos, Hartmut G.
Format: Conference Proceeding
Language:English
Subjects:
Cavity resonators
Couplings
Electric fields
Magnetic materials
Metamaterials
Photonic crystals
Photonics
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Summary:Light-matter interaction in the strong coupling regime is of profound interest for fundamental quantum optics and applications. Here, we report a new type of strong light-matter interaction of metamaterial `quasi-particles' with photons in a photonic crystal cavity in the terahertz frequency range. The measured Rabi splitting shows a square-root dependence on the density of metamaterial unit cells, even for unit cells from two spatially separated planar metamaterials, indicating nonlocal collective strong interactions. These findings are of interest for the investigation of fundamental strong-coupling phenomena, but also for applications such as ultra-low-threshold terahertz polariton lasing, voltage-controlled modulators and frequency filters, and ultra-sensitive chemical and biological sensing.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2019.8874450