THz Ultrastrong Coupling in an Engineered Fabry-Perot Cavity

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THz Ultrastrong Coupling in an Engineered Fabry-Perot Cavity

Journal Article (2021)

Author(s)

Elena Mavrona (ETH Zürich, Swiss Federal Laboratories for Materials Science and Technology (Empa))

Shima Rajabali (ETH Zürich)

Felice Appugliese (ETH Zürich)

Johan Andberger (ETH Zürich)

Mattias Beck (ETH Zürich)

Giacomo Scalari (ETH Zürich)

Jérôme Faist (ETH Zürich)

Affiliation

External organisation

Compact THz Q factor Ultrastrong coupling Fabry−Perot cavity Multiple modes

DOI related publication

https://doi.org/10.1021/acsphotonics.1c00717 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:dc32842c-81c7-4955-9b9e-6fd7bdcd7c7d

More Info

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Publication Year

2021

Language

English

Affiliation

External organisation

Journal title

ACS Photonics

Issue number

9

Volume number

8

Pages (from-to)

2692-2698

Downloads counter

175

Abstract

We report a monolithic THz planar Fabry-Perot cavity fabricated with wafer bonding and provided with metallic mirrors with subwavelength apertures. We demonstrate its coupling to the cyclotron resonance of a high-mobility, two-dimensional electron gas.Qfactors up to 89 are observed for the first mode at ≃300 GHz, with cooperativity C= 56.4 and a normalized coupling ratio Ωωin the first mode of up to 17.5% and the third mode of up to 6.4%.