1201.5153 (A. Laucht et al.)

A Waveguide-Coupled On-Chip Single Photon Source    [PDF]

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

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 \mum. 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 single photon source with single mode spontaneous emision coupling
efficiencies in excess of beta~85 % and the potential to reach maximum emission
rates >1 GHz.

View original: http://arxiv.org/abs/1201.5153