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Nonlinear Terahertz Electroluminescence from Dirac Landau Polaritons

by Morozov, S V , Consejo, C , Ruffenach, S , Torres, J , Dvoretskii, S A , Dzian, J , Ballet, P , Orlita, M , Teppe, F , Benhamou-Bui, B , Bray, C , Krishtopenko, S S , F Le Mardelé , Jouault, B , Ciuti, C , Pagot, A , Baudry, X , Mikhailov, N N

in Cyclotrons / Electroluminescence / Emission / Fermions / Polaritons / Quantum wells

2026

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Nonlinear Terahertz Electroluminescence from Dirac Landau Polaritons

in Cyclotrons / Electroluminescence / Emission / Fermions / Polaritons / Quantum wells

2026

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Nonlinear Terahertz Electroluminescence from Dirac Landau Polaritons

in Cyclotrons / Electroluminescence / Emission / Fermions / Polaritons / Quantum wells

2026

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Paper

Nonlinear Terahertz Electroluminescence from Dirac Landau Polaritons

Morozov, S V,

Consejo, C,

Ruffenach, S,

Torres, J,

Dvoretskii, S A,

Dzian, J,

Ballet, P,

Orlita, M,

Teppe, F,

Benhamou-Bui, B,

Bray, C,

Krishtopenko, S S,

F Le Mardelé,

Jouault, B,

Ciuti, C,

Pagot, A,

Baudry, X,

Mikhailov, N N

2026

Overview

We report Dirac Landau polaritons observed by terahertz (THz) magnetoreflectivity spectroscopy, demonstrating strong coupling between cyclotron transitions of two-dimensional (2D) Dirac fermions in HgTe quantum wells and optical cavity modes. Under pulsed electrical injection we observe efficient nonlinear electroluminescence, with a strongly out-of-equilibrium polariton distribution dominated by emission from the upper polariton branches. Model analysis of the bias-dependent emission intensity and spectral narrowing indicates a polariton occupancy per mode approaching unity, with a possible contribution from stimulated polariton emission in the spectral region of the upper anticrossing. These results open prospects toward Dirac Landau polariton condensates and low-threshold, tunable THz polariton lasers based on cyclotron emission.

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Publisher

Cornell University Library, arXiv.org

Subject

Cyclotrons

/ Electroluminescence