Quantum 2025 – scientific programme
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THU: Thursday Contributed Sessions
THU 13: Poster Session: Applications
THU 13.46: Poster
Thursday, September 11, 2025, 16:30–18:30, ZHG Foyer 1. OG
Integrated Photonic Information Processing for Quantum Networks — •Louis L. Hohmann1,2, Jeldrik Huster1,2, Jonas C. J. Zatsch1,2, Tim Engling1,2, and Stefanie Barz1,2 — 1Institute for Functional Matter and Quantum Technologies, University of Stuttgart, 70569 Stuttgart, Germany — 2Center for Integrated Quantum Science and Technology (IQST)
We present our progress in generating multipartite entangled states, a key component for photonic quantum computing. The states are generated on a silicon-on-insulator photonic quantum circuit powered by spontaneous parametric down-conversion single-photon sources. The circuit comprises tunable beam splitters and phase shifters, enabling the generation of various entangled states. The fiber-to-chip interface is realized using 3D-printed photonic wirebonds, a low-loss and high-stability interconnect between single-mode fibers and on-chip edge couplers. These novel interconnects, in combination with integrated photonic circuits, pave the way towards fully packaged photonic quantum computing devices.
Keywords: multipartite entanglement; silicon photonics; photonic quantum computing