title: Efficiency vs. multi-photon contribution test for quantum dots.
abstract: 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.
authors.forename: Ana
authors.initials: A
authors.lastname: Predojević
authors.forename: Miroslav
authors.initials: M
authors.lastname: Ježek
authors.forename: Tobias
authors.initials: T
authors.lastname: Huber
authors.forename: Harishankar
authors.initials: H
authors.lastname: Jayakumar
authors.forename: Thomas
authors.initials: T
authors.lastname: Kauten
authors.forename: Glenn S
authors.initials: GS
authors.lastname: Solomon
authors.forename: Radim
authors.initials: R
authors.lastname: Filip
authors.forename: Gregor
authors.initials: G
authors.lastname: Weihs