Regensburg 2022 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 4: Poster: Quantum Information

QI 4.14: Poster

Montag, 5. September 2022, 18:00–20:00, P2

Integrated Photonic Information Processing for Quantum Networks — •Jeldrik Huster1, Simon Abdani1, Jonas Zatsch1, Christian Schweikert2, Rouven Klenk2, and Stefanie Barz11Institute for Functional Matter and Quantum Technologies & IQST, University of Stuttgart, 70569 Stuttgart, Germany — 2Institute of Electrical and Optical Communications Engineering, University of Stuttgart, 70569 Stuttgart, Germany

The steady progression of photonic quantum systems allows the realisation of quantum computation, communication and networked applications. Key in pursuit of scalable photonic quantum technology are integrated devices operating in the telecom regime, due to their small footprint, high phase stability and low loss connectivity. Particularly, the generation of multipartite entangled states is of special interest. These states are the basis for measurement-based quantum computing and multiparty key exchange. Here, we present our recent progress on silicon-photonic quantum circuits operating at the single-photon level. The circuits consist of tuneable beam splitters, phase shifters and highly efficient grating couplers. They are powered by spontaneous parametric down conversion sources and used in combination with superconducting single-photon detectors. We show the characterisation of integrated devices and a pathway to generate complex entangled sates in an integrated manner.

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DPG-Physik > DPG-Verhandlungen > 2022 > Regensburg