Observation of a long-range interaction between semiconductor quantum dots

E.W. Bogaart, J.E.M. Haverkort, R. Nötzel

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Abstract

We demonstrate electromagnetic interaction between distant quantum dots (QDs), as is obsd. 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 d. of states. The obsd. 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 sepn. [on SciFinder (R)]
Original languageEnglish
Title of host publicationPhysics of semiconductors : 28th International Conference on the Physics of Semiconductors, ICPS 2006, Vienna, Austria, 24 - 28 July 2006
EditorsW. Jantsch
Place of PublicationMelville
PublisherAmerican Institute of Physics
Pages949-950
ISBN (Print)978-0-7354-0397-0
DOIs
Publication statusPublished - 2007

Publication series

NameAIP Conference Proceedings
Volume893
ISSN (Print)0094-243X

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Bogaart, E. W., Haverkort, J. E. M., & Nötzel, R. (2007). Observation of a long-range interaction between semiconductor quantum dots. In W. Jantsch (Ed.), Physics of semiconductors : 28th International Conference on the Physics of Semiconductors, ICPS 2006, Vienna, Austria, 24 - 28 July 2006 (pp. 949-950). (AIP Conference Proceedings; Vol. 893). Melville: American Institute of Physics. https://doi.org/10.1063/1.2730207