Regensburg 2022 – wissenschaftliches Programm

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SYED: Entanglement Distribution in Quantum Networks

SYED 1: Entanglement Distribution in Quantum Networks

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 [1], and qubit teleportation between non-neighbouring nodes [2]. Moreover, we will discuss future challenges and prospects for quantum networks, including increasing the distance between nodes to metropolitan scales [3] and the role of next-generation integrated devices.

[1] M. Pompili, S.L.N. Hermans, S. Baier et al., Science 372, 259 (2021).

[2] S.L.N. Hermans, M. Pompili et al., Nature 605, 663 (2022).

[3] Arian Stolk, Kian L. van der Enden et al., arXiv: 2202.00036 (2021).

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