Actively tuned and spatially trapped polaritons

被引:63
作者
Balili, RB
Snoke, DW
Pfeiffer, L
West, K
机构
[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
[2] Bell Labs, Murray Hill, NJ 07974 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.2164431
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report active tuning of the polariton resonance of quantum well excitons in a semiconductor microcavity using applied stress. Starting with the quantum well exciton energy higher than the cavity photon mode, we use stress to reduce the exciton energy and bring it into resonance with the photon mode. At the point of zero detuning, line narrowing and strong increase of the photoluminescence are seen. By the same means, we create an in-plane harmonic potential for the polaritons, which allows trapping, potentially making possible Bose-Einstein condensation of polaritons analogous to trapped atoms. We demonstrate drift of the polaritons into this trap. (c) 2006 American Institute of Physics.
引用
收藏
页码:1 / 3
页数:3
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