Regensburg 2022 – wissenschaftliches Programm
SYED 1.1: Hauptvortrag
Mittwoch, 7. September 2022, 09:30–10:00, H1
A multi-node quantum network of remote solid-state qubits — •Ronald Hanson and Alejandro Rodriguez-Pardo Montblanch — QuTech and Kavli Institute of Nanoscience Delft, Delft University of Technology, The Netherlands
Future quantum networks may harness the unique features of entanglement in a range of exciting applications, such as quantum computation and simulation, secure communication, enhanced metrology for astronomy and time-keeping as well as fundamental investigations. To fulfill these promises, a strong worldwide effort is ongoing to gain precise control over the full quantum dynamics of multi-particle nodes and to wire them up using quantum-photonic channels.
We report on the realization of a three-node entanglement-based quantum network based on diamond NV centers and demonstrate several quantum network protocols without post-selection: the distribution of genuine multipartite entangled states across the three nodes, entanglement swapping through an intermediary node , and qubit teleportation between non-neighbouring nodes . Moreover, we will discuss future challenges and prospects for quantum networks, including increasing the distance between nodes to metropolitan scales  and the role of next-generation integrated devices.
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