Widely tunable, efficient on-chip single photon sources at telecommunication wavelengths
Year: 2012
Type: article
Abstract: We demonstrate tunable on-chip single photon sources using the Stark tuning of single quantum dot (QD) excitonic transitions in short photonic crystal waveguides (PhC WGs). The emission of single QDs can be tuned in real-time by 9 nm with an applied bias voltage less than 2V. Due to a reshaped density of optical modes in the PhC WG, a large coupling efficiency β ≥ 65%to the waveguide mode is maintained across a wavelength range of 5 nm. When the QD is resonant with the Fabry-Perot mode of the PhC WG, a strong enhancement of spontaneous emission is observed leading to a maximum coupling efficiency β = 88%. These results represent an important step towards the scalable integration of single photon sources in quantum photonic integrated circuits.
Source: Optics Express
DOI: 10.1364/oe.20.021758
Institutions: Eindhoven University of Technology, University of Würzburg
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W2137338945