https://doi.org/10.1140/epjs/s11734-023-00980-9
Regular Article
Flexible reconfigurable entanglement-based quantum key distribution network
Institute for Applied Physics, Technical University of Darmstadt, Schlossgartenstraße 7, 64289, Darmstadt, Hesse, Germany
f
thomas.walther@physik.tu-darmstadt.de
Received:
10
March
2023
Accepted:
22
August
2023
Published online:
12
September
2023
Recently, we implemented a basic star-shaped entanglement-based quantum key distribution network without trusted nodes. It enables simultaneous pairwise exchange of quantum keys between multiple users. In this paper, we demonstrate its flexibility by focusing on several aspects. We show continuous system operation over a partially deployed 100 km fiber link for multiple days as well as dynamic reconfiguration of the communication partners. The photon pair source enables type-II or type-0 photon pair generation by SPDC as well as various demultiplexing strategies and repetition rates.
© The Author(s) 2023
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