Erlangen 2022 – wissenschaftliches Programm

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SYPD: PhD Symposium - Solid-state Quantum Emitters Coupled to Optical Microcavities

SYPD 1: Solid-state quantum emitters coupled to optical microcavities

SYPD 1.4: Hauptvortrag

Montag, 14. März 2022, 18:00–18:30, AKjDPG-H17

A multi-node quantum network of remote solid-state qubits — •Ronald Hanson — QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

Future quantum networks [1] may harness the unique features of entanglement in a range of exciting applications. 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.

Here, we present our most recent work on the realization and application of a three-node entanglement-based quantum network based on diamond NV centers. We 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 [2], and qubit teleportation between non-neighbouring nodes [3]. This work establishes a novel platform for exploring, testing, and developing multi-node quantum network protocols and a quantum network control stack [4]. Moreover, we will discuss future challenges and prospects for quantum networks, including the role of next-generation integrated devices.

[1] Quantum internet: A vision for the road ahead, S Wehner, D Elkouss, R Hanson, Science 362 (6412), eaam9288 (2018). [2] M. Pompili, S.L.N. Hermans, S. Baier et al., Science 372, 259-264 (2021). [3] S.L.N. Hermans, M. Pompili et al., arXiv:2110.11373 (2021). [4] M. Pompili, C. Delle Donne et al., arXiv:2111.11332 (2021).