Efficiency vs. multi-photon contribution test for quantum dots

The development of linear quantum computing within integrated circuits demands high quality semiconductor single photon sources. In particular, for a reliable single photon source it is not sufficient to have a low multi-photon component, but also to possess high efficiency. We investigate the photo...

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Bibliographic Details
Published in:Optics express 2014-02, Vol.22 (4), p.4789-4798
Main Authors: Predojević, Ana, Ježek, Miroslav, Huber, Tobias, Jayakumar, Harishankar, Kauten, Thomas, Solomon, Glenn S, Filip, Radim, Weihs, Gregor
Format: Article
Language:English
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Summary:The development of linear quantum computing within integrated circuits demands high quality semiconductor single photon sources. In particular, for a reliable single photon source it is not sufficient to have a low multi-photon component, but also to possess high efficiency. We investigate the photon statistics of the emission from a single quantum dot with a method that is able to sensitively detect the trade-off between the efficiency and the multi-photon contribution. Our measurements show, that the light emitted from the quantum dot when it is resonantly excited possess a very low multi-photon content. Additionally, we demonstrated, for the first time, the non-Gaussian nature of the quantum state emitted from a single quantum dot.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.22.004789