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Q: Fachverband Quantenoptik und Photonik

Q 8: Nanophotonics and Integrated Photonics II

Q 8.1: Invited Talk

Monday, March 2, 2026, 17:00–17:30, P 3

Heterogeneous Quantum Photonics: A Platform for Quantum Sensing, Networking, and Transduction — •Samuel Gyger — Saarland University, Saarbrücken, Germany — Stanford University, Stanford, United States

Realizing quantum photonic technologies requires architectures beyond commercial foundry processes. While they provide reliability and favorable cost reduction for high-volume production, their rigid processes often conflict with the high-mix environment of quantum research, and they typically lack integrated quantum hardware, such as single photon detectors (SNSPDs) or quantum light sources. We propose a "chiplet-based" approach using heterogeneous integration of optimized submodules and robotic automation to bring industrial-grade consistency to the research lab.

We show that robotic resist development reduces the inter-chip resistance spread in superconducting devices from ≈ 7% to ≈ 2%. We also demonstrate deterministic SNSPD integration onto arbitrary photonic substrates via transfer printing. Finally, co-integrated lithium niobate and silicon optomechanical crystals enable a platform for quantum transduction. We improve thermal anchoring to achieve ground-state operation with pulsed sideband asymmetry at repetition rates up to 3 MHz.

This automated, heterogeneous framework provides a scalable path for next-generation quantum technology laboratories.

Keywords: Integrated photonics; Single Photon Detectors; Robotic automation; Optomechanical Crystals