Regensburg 2022 – scientific programme

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QI: Fachverband Quanteninformation

QI 4: Poster: Quantum Information

QI 4.13: Poster

Monday, September 5, 2022, 18:00–20:00, P2

Finite-range multiplexing in tripartite quantum networks — •Julia Alina Kunzelmann, Hermann Kampermann, and Dagmar Bruß — Institut für Theoretische Physik III, Heinrich-Heine-Universität Düsseldorf

Due to the interaction between qubits and their environment, long-distance communication still poses a challenge. To overcome this problem, quantum repeaters are used, in which the repeater rate can be maximized by utilizing multiplexing. In previous work (Abruzzo et al. (2014)), a finite-range multiplexing protocol for two parties was investigated. We extend this protocol to three parties and it turns out that also in the tripartite network, full-range multiplexing does not provide substantial advantages over finite-range multiplexing. We also analyze decoherence of quantum memories and various strategies to lower the experimental requirements. To achieve this, different three-dimensional matching strategies are analyzed.