Observation of a Long-Range Interaction between Semiconductor Quantum Dots
其他凝聚态物理
2009-11-11 v1
摘要
We demonstrate electromagnetic interaction between distant quantum dots (QDs), as is observed from transient pump-probe differential reflectivity measurements. The QD-exciton lifetime is measured as a function of the probe photon energy and shows a strong resonant behavior with respect to the QD density of states. The observed exciton lifetime spectrum reveals a subradiance-like coupling between the QD, with a 12 times enhancement of the lifetime at the center of the ground state transition. This effect is due to a mutual electromagnetic coupling between resonant QDs, which extends over distances considerably beyond the nearest neighbor QD-QD separation.
引用
@article{arxiv.cond-mat/0610204,
title = {Observation of a Long-Range Interaction between Semiconductor Quantum Dots},
author = {E. W. Bogaart and J. E. M. Haverkort and R. Noetzel},
journal= {arXiv preprint arXiv:cond-mat/0610204},
year = {2009}
}
备注
Proc. 28th ICPS, July 2006, Vienna, Austria