室温下GaAs/AlGaAs结构中极化激元的玻色-爱因斯坦凝聚

Bose-Einstein Condensation of Polaritons at Room Temperature in a GaAs/AlGaAs Structure.

作者信息

Alnatah Hassan, Liang Shuang, Yao Qi, Wan Qiaochu, Beaumariage Jonathan, West Ken, Baldwin Kirk, Pfeiffer Loren N, Snoke David W

机构信息

Department of Physics, University of Pittsburgh, 3941 O'Hara Street, Pittsburgh, Pennsylvania 15218, United States.

Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, United States.

出版信息

ACS Photonics. 2024 Dec 20;12(1):48-52. doi: 10.1021/acsphotonics.4c01992. eCollection 2025 Jan 15.

DOI:10.1021/acsphotonics.4c01992

PMID:39830862

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11741138/

Abstract

We report the canonical properties of the Bose-Einstein condensation of polaritons in the weak coupling regime, 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 noninteracting photons, and dramatic line narrowing due to coherence, giving coherent emission with a 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.

摘要

我们报道了极化激元在弱耦合 regime 下玻色-爱因斯坦凝聚的典型特性，此前在许多低温实验中可见，此次是在室温下于 GaAs/AlGaAs 结构中观察到的。这些效应包括极化激元的非线性能量移动，表明它们并非无相互作用的光子，以及由于相干性导致的显著线宽变窄，在室温下无需外部稳定化即可产生光谱宽度为 0.24 毫电子伏特的相干发射。这为基于极化激元凝聚的室温非线性光学器件开辟了可能性。