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Regensburg 2022 – wissenschaftliches Programm

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SYED: Entanglement Distribution in Quantum Networks

SYED 1: Entanglement Distribution in Quantum Networks

SYED 1.4: Hauptvortrag

Mittwoch, 7. September 2022, 11:15–11:45, H1

Quantum photonics: interference beyond HOM and quantum networks — •Stefanie Barz — Institute for Functional Matter and Quantum Technologies, University of Stuttgart, Germany — Center for Integrated Quantum Science and Technology (IQST), University of Stuttgart, Germany

In the first part of my talk, I will talk about recent experiments on quantum interference. I will show the impact of distinguishability and mixedness - two fundamental properties of quantum states - on quantum interference. I will demonstrate that these two properties can influence the interference of multiple particles in very different ways, leading to effects that cannot be observed in the interference of two particles alone. In the second part of my talk, I will report on our recent work in quantum networks. I will talk about a crucial component of a photonic quantum network: Bell-state measurements and report on an experimental demonstration of a scheme that allows obtaining a success probability of more than 50%. Finally, I will show the implementation of a novel protocol for networked key exchange using cluster states as a resource.

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