Generation, guiding and splitting of triggered single photons from a resonantly excited quantum dot in a photonic circuit

作者：Schwartz Mario^*; Rengstl Ulrich; Herzog Thomas; Paul Matthias; Kettler Jan; Portalupi Simone Luca; Jetter Michael; Michler Peter

来源：Optics Express, 2016, 24(3): 3089-3094.

DOI：10.1364/OE.24.003089

We demonstrate resonance fluorescence from single In-GaAs/GaAs quantum dots embedded in a rib waveguide beamsplitter structure operated under pulsed laser excitation. A systematic study on the excitation laser pulse duration depicts that a sufficiently small laser linewidth enables a substantial improved single-photon-to-laser-background ratio inside a waveguide chip. This manifests in the observation of clear Rabi oscillations over two periods of the quantum dot emission as a function of laser excitation power. A photon cross-correlation measurement between the two output arms of an on-chip beamsplitter results in a g((2)) (0)= 0.18, demonstrating the generation, guiding and splitting of triggered single photons under resonant excitation in an on-chip device. The present results open new perspectives for the implementation of photonic quantum circuits with integrated quantum dots as resonantly-pumped deterministic single-photon sources.

• 出版日期2016-2-8