Quantum 2025 – wissenschaftliches Programm
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THU: Thursday Contributed Sessions
THU 13: Poster Session: Applications
THU 13.16: Poster
Donnerstag, 11. September 2025, 16:30–18:30, ZHG Foyer 1. OG
Entanglement distribution in hybrid discrete- and continuous-variable microwave networks — •Simon Gandorfer1,2, Joan Agustí1,2, Maria-Teresa Handschuh1,2, Kedar E. Honasoge1,2, Achim Marx1, Peter Rabl1,2,3, Rudolf Gross1,2,3, and Kirill G. Fedorov1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 2School of Natural Sciences, Technische Universität München, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology, 80799 Munich, Germany
Distributing entanglement between spatially separated nodes of a large-scale quantum network is a fundamentally important milestone for quantum information processing tasks. In particular, quantum entanglement is needed for quantum teleportation or logical quantum gates with remote qubits. In our experiment, we employ a superconducting transmon qubit in a 3D cavity driven by a microwave two-mode squeezed (TMS) bath. We investigate a build-up of entanglement between the remote superconducting nodes due to their interaction with the common, quantum-correlated, reservoir. The corresponding entanglement conversion between continuous- and discrete-variables allows for promising and robust quantum microwave network architectures. Finally, we discuss possible extensions and applications for distributed quantum computing.
Keywords: entanglement distribution; microwaves; superconducting qubit; quantum communication