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Strong coupling of the cyclotron transition of a 2DEG in a THz metamaterial

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Abstract

We combine split ring resonators and high mobility two-dimensional electron gas (2DEG) into a THz metamaterial where we observe strong light-matter coupling between the cyclotron transition of the 2DEG and the split ring resonances. A strong change of the metamaterial transmission spectrum is observed as a function of the applied magnetic field, and a clear anticrossing behaviour is displayed by the absorption features. A ratio of Ωresc=0.3 is observed between the vacuum Rabi frequency Ωres and the cyclotron frequency ωc.

© 2011 Optical Society of America

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