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Dresden 2017 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 33: Quantum Dots: Optical Properties I

HL 33.1: Hauptvortrag

Dienstag, 21. März 2017, 09:30–10:00, POT 81

Deterministic Single Quantum Dot Devices: Building Blocks for Photonic Quantum Networks — •Stephan Reitzenstein — Institute of Solid State Physics, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany

The emerging field of photonic quantum technologies relies crucially on the availability of practical quantum light sources. Prime candidates to realize such sources are self-assembled semiconductor quantum dots (QDs). This is explained by their superb optical properties in terms of the quantum efficiency, the single photon purity and the high photon indistinguishability. Moreover, QDs allow for the generation of entangled photon pairs and more complex photon states. Still, it is a great challenge to further develop these key building blocks beyond proof-of-principle demonstrations towards scalable quantum devices enabling advanced systems such as multi-partite quantum networks.

In this talk, I will review exciting progress in the field of QD based devices with a focus on the development of practical and efficient quantum light sources for future photonic quantum networks. This includes important aspects such efficient light extraction strategies, deterministic nanoprocessing technologies and the quantum optical evaluation of the photon sources. In particular, I will introduce in-situ electron beam lithography, which allows for the realization of QD based quantum devices with high process yield. The talk will conclude with an outlook on upcoming challenges such as entanglement swapping using QD based quantum light sources.

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