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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster III
Q 42.17: Poster
Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof
Integrated Photonics for Quantum Computing and Communication — •Jonas Zatsch1,3, Jeldrik Huster1,3, Simon Abdani1,3, Christian Schweikert2, and Stefanie Barz1,3 — 1Institute for Functional Matter and Quantum Technologies, University of Stuttgart, 70569 Stuttgart, Germany — 2Institute of Electrical and Optical Communications Engineering, University of Stuttgart, 70569 Stuttgart, Germany — 3Center for Integrated Quantum Science and Technology (IQST)
Future quantum information research aims at the realisation of computationally powerful quantum computers and the secure implementation of quantum communication protocols. This requires an increasing number of components with small footprint, high phase stability and low-loss connectivity. A promising scalable technology is integrated quantum photonics, allowing for a compact and robust manipulation of photonic quantum bits. We present an integrated photonic chip, based on the silicon-on-insulator platform, enabling photonic quantum information processing. We demonstrate the generation of photonic quantum states on chip using integrated beam splitters and phase shifters. We show the conversion of quantum information from one degree of freedom -- path -- to another -- polarisation -- and vice versa. Combining this conversion with efficient fibre coupling allows one to connect several chips and thus the implementation of networked protocols for quantum communication and quantum computing.