Efficiency vs. Multi-photon contribution test for quantum dots

Ana Predojević, Miroslav Ježek, Tobias Huber, Harishankar Jayakumar, Thomas Kauten, Glenn S. Solomon, Radim Filip, Gregor Weihs

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)4789-4798
Number of pages10
JournalOptics Express
Issue number4
StatePublished - Feb 24 2014
Externally publishedYes


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