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QCI Connect: A Modular Full-Stack Quantum Computing Platform
Eric Bertok, Hannes Busche, Florian Drinkler, David Emmanuel-Costa, Daniel Herr, Steffen Hien, Thomas Keitzl, Elisabeth Lobe, Alexandru Paler, Johannes Renkl, Martin Rymarz, Gary Schmiedinghoff, Peter K. Schuhmacher, Thomas Stehle, Benedikt Strobel, Hanna Tschakert, Adrian Vetter, Andre Waschk, Alexander Weinert, Lukas Windgätter·June 12, 2026
Quantum Physics
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Abstract
In a world of various competing quantum computing architectures, hardware-agnostic, full-stack platforms are necessary to bring the full power of quantum computing hardware to domain experts via the cloud. QCI Connect and its Software Development Kit provide a reference architecture for a full-stack platform with a modular design and open-source interface definitions, built to facilitate a community-driven application ecosystem. Here, we present its overall design and features, central interfaces, and lessons learned, both for users of the platform and as a reference guide for future developments.