Bose-Einstein condensation of polaritons at room temperature in a GaAs/AlGaAs structure

2024/06/19 by Hassan Alnatah, Alnatah, Hassan, Qi Yao +13 · 4 citations
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Quantum Gases (cond-mat.quant-gas) #Strong Light-Matter Interactions #Thermal Radiation and Cooling Technologies

paper · pdf · doi:10.48550/arxiv.2406.13689

openalex publication_date 2024/06/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report the canonical properties of Bose-Einstein condensation of polaritons, seen previously in many low-temperature experiments, at room temperature in a GaAs/AlGaAs structure. These effects include a nonlinear energy shift of the polaritons, showing that they are not non-interacting photons, and dramatic line narrowing due to coherence, giving coherent emission with spectral width of 0.24 meV at room temperature with no external stabilization. This opens up the possibility of room temperature nonlinear optical devices based on polariton condensation.

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