A waveguide-coupled on-chip single-photon source

A. Laucht, S. Pütz, T. Günthner, N. Hauke, R. Saive, S. Frédérick, M. Bichler, M. C. Amann, A. W. Holleitner, M. Kaniber, J. J. Finley*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

143 Citations (Scopus)
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We investigate single-photon generation from individual self-assembled InGaAs quantum dots coupled to the guided optical mode of a GaAs photonic crystal waveguide. By performing confocal microscopy measurements on single dots positioned within the waveguide, we locate their positions with a precision better than 0:5 μm. Time-resolved photoluminescence and photon autocorrelation measurements are used to prove the single-photon character of the emission into the propagating waveguide mode. The results obtained demonstrate that such nanostructures can be used to realize an on-chip, highly directed singlephoton source with single-mode spontaneous emission coupling efficiencies in excess of βΓ ~ 85% and the potential to reach maximum emission rates >1 GHz.

Original languageEnglish
Article number011014
Number of pages7
JournalPhysical review X
Issue number1
Publication statusPublished - 29 Mar 2012
Externally publishedYes


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