On-chip generation and guiding of quantum light from a site-controlled quantum dot

Abstract

We demonstrate the emission and routing of single photons along a semiconductor chip originating from carrier recombination in an actively positioned InAs quantum dot. Device scale arrays of quantum dots are formed by a two step regrowth process. We precisely locate the propagating region of a unidirectional photonic crystal waveguide with respect to the quantum dot nucleation site. Under pulsed optical excitation, the multiphoton emission probability from the exit of the waveguide is 12 \pm 5 % before any background correction. Our results are a major step towards the deterministic integration of a quantum emitter with the waveguiding components of photonic quantum circuits.

arXiv comment8 pages, 4 figures

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• On-chip generation and guiding of quantum light from a site-controlled quantum dot

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• Heralded single photon sources for QKD applications
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• Ultrafast Coherent Manipulation of Trions in Site-Controlled Nanowire Quantum Dots